JP4576264B2 - Heat supply system - Google Patents

Description

  The present invention relates to a heat supply system in which heat source hot water heated by a common heat source device is supplied to a plurality of heat consumers, and heat held by the heat source hot water is consumed by a heat consuming device of the heat consumer.

  This type of heat supply system uses, for example, a common cogeneration facility for a plurality of households in a predetermined area to supply hot water to each household that is a heat consumer. In addition, a system capable of performing hot water supply with high energy efficiency as a whole is to be established.

  For this purpose, this type of heat supply system is provided with a heat source hot water circulation line through which heat source hot water (hot water temperature 50 to 90 ° C.) generated by a common heat source device circulates, and is drawn into each heat consumer. A low-temperature water supply line for supplying each household with low-temperature water having a temperature lower than that of the heat source hot water such as clean water is used or provided. As the low-temperature water supplied through this low-temperature water supply line, for example, preheated water preheated by exhaust heat of exhaust gas discarded from a common cogeneration facility can be used. The temperature of this type of low-temperature water is about 5 to 25 ° C.

  Thus, in the heat source device, heat source hot water is produced using gas, electric power, and clean water, and the heat source hot water is supplied to each heat consumer in turn using a single heat source hot water circulation line. That is, the heat source hot water constantly circulates in the heat source hot water circulation line, and each heat consumer is configured to receive a necessary amount of heat from the heat source hot water circulating in the heat source hot water circulation line. Moreover, each heat consumer is provided with the warm water heat source supply apparatus which has a thermal storage material, and while being able to store the heat | fever amount of the heat source warm water taken in from the heat source warm water circulation line, it can also thermally radiate with respect to heat source warm water. Therefore, in each heat consumer, it is possible to store heat in the heat storage material in a time zone where the heat demand is small (for example, midnight) and use heat in a time zone where the heat demand is large. In addition, although the temperature of the heat source hot water flowing through the heat source hot water circulation line decreases as it goes downstream, if the amount of heat demand of the upstream heat consumer is low, the heat demand from that heat consumer The heat source hot water is heated by heat dissipation, that is, the heat storage material of the upstream heat consumer, so that the temperature of the downstream heat source hot water is maintained. Thus, not only the heat source device serves as a heat source for the heat source hot water flowing through the heat source hot water circulation line, but the whole including the heat consumers acts as a heat source (see, for example, Patent Document 1).

There are other heat supply systems that supply heat source hot water heated by a common heat source device to a plurality of heat consumers, for example, a plurality of heat consumers from a common heat source device provided in an apartment house or the like. There is a system in which a reciprocating pipe is provided to supply heat source hot water. In this case, the forward pipe from which the heat source hot water is supplied to each heat consumer from the heat source device and the return pipe from which each heat consumer returns the heat source hot water to the heat source device are separate. Are supplied with hot water at the same temperature. That is, on the system configuration, the heat source hot water having the same temperature is supplied to each heat consumer. Therefore, as in Patent Document 1, each heat consumer radiates heat to the heat source hot water. It is not.
In addition, since the heat source hot water is supplied to each heat consumer using a reciprocating pipe, and the heat consumer does not radiate heat to the heat source hot water, the temperature of the return heat source hot water in the reciprocating pipe and the return By measuring the temperature of the heat source hot water and its flow rate, the amount of heat demand in each heat consumer can be derived.

JP 2003-28449 A

  In the heat supply system as described in Patent Document 1, the heat consumer not only consumes or stores the heat amount of the heat source hot water taken from the heat source hot water circulation line, but also radiates heat (heat supply) to the heat source hot water. ing. Therefore, it is difficult to derive the heat demand of heat consumers in this heat supply system. For example, simply as described in Patent Document 2, the difference between the temperature when the heat consumer takes the heat source hot water from the heat source hot water circulation line and the temperature when the heat source hot water is returned to the heat source hot water circulation line, Even if the derivation method using the heat source hot water flow rate as the heat demand is used, the heat demand from the heat consumer is not considered, so the derived heat demand is acceptable to all heat consumers. It is not possible.

  This invention is made | formed in view of said subject, The objective is to provide the heat supply system which can derive | lead-out the demand amount of each heat consumer correctly.

In order to achieve the above object, the heat supply system according to the present invention is characterized in that the heat source hot water heated by a common heat source device is supplied to a plurality of heat consumers, and the heat held by the heat source hot water is the heat. A heat supply system consumed by a heat consuming device of a consumer,
For the plurality of ordered heat consumers,
A heat source hot water circulation line configured so that the heat source hot water flows in order and returns to the heat source device, heat source hot water is taken in from the heat source hot water circulation line, and a heat source is returned to the return part downstream of the heat source hot water from the heat source hot water take-in part With a door-to-door hot water circulation means for returning hot water ,
As information on the operating state of the heat consuming device , provided with a communication line used when collecting temperature information and flow rate information capable of deriving the heat consumption consumed in the heat consuming device ,
An information processing apparatus for collecting information on the operating state via the communication line for deriving heat demand costs for each consumer;
Heat consumption deriving means for receiving heat supply from the heat source hot water flowing through the door-to-door hot water circulation means to the information processing apparatus and deriving heat consumption consumed in the heat consuming apparatus from information on the operating state A heat demand deriving means for deriving the heat demand of the heat consumer for the heat source device from the heat consumption derived by the heat consumption deriving means ,
A heat demand cost deriving means for deriving a heat demand cost for each heat consumer based on the heat demand for each heat consumer derived by the heat demand deriving means;
Further, the heat demand cost deriving means includes a cost required to operate the common heat source device to generate the heat source hot water and a cost required to circulate the heat source hot water to the heat source hot water circulation line. The point is to derive the heat demand cost by apportioning the heat demand for each house .

Among the above-described features, a heat supply system that supplies the heat source hot water heated by the common heat source device to a plurality of heat consumers, and that the heat held by the heat source hot water is consumed by the heat consumers of the heat consumers The heat source hot water circulation line configured to sequentially flow the heat source hot water through the plurality of heat consumers ordered and return to the heat source device, and heat source hot water from the heat source hot water circulation line. And a separate hot water circulation means for returning the heat source hot water to the return part downstream of the circulation line from the intake part of the heat source hot water. The temperature information and the flow rate information are collected as information on the operating state of the heat consuming device. An information processing apparatus comprising a communication line and for collecting information on the operating state from the information communication line for deriving a heat demand cost for each consumer The heat consumption amount derived from the information on the operation state by receiving heat supply from the heat source hot water flowing in the individual hot water circulation means to the information processing device and consuming the heat consumption amount consumed in the heat consumption device. According to the present invention , it is possible to provide a heat demand amount deriving unit that derives the heat demand amount of the heat consumer for the heat source device from the heat consumption amount derived by the heat consumption amount deriving unit. The deriving means derives the heat consumption of the heat consuming device of each heat consumer from the operating state of the heat consuming device, and the heat demand deriving means actually calculates the heat consumption from the heat consumption derived by the heat consumption deriving means. The heat demand of the heat consumer for the heat source device, which is the amount of heat consumed on the device side, is derived on the device side. In other words, in the heat supply system of this feature configuration, there may be heat storage from the heat source hot water taken in by the heat consumer from the hot water heat source circulation line and heat radiation from the heat consumer to the heat source hot water returned to the hot water heat source circulation line. It cannot be derived simply based on the temperature of the heat source hot water taken into the heat consumer from the heat source hot water circulation line, the temperature of the heat source hot water returned from the heat consumer to the heat source hot water circulation line, and the flow rate of the heat source hot water. Regardless of whether heat is stored from the heat source hot water or whether heat is released to the heat source hot water, how the used heat source hot water is used in the heat consuming device, that is, the operating state of the heat consuming equipment is measured. As a result, it is possible to provide a supply system capable of accurately deriving the amount of heat demand that faithfully reflects the amount of heat consumed by the heat consumer.

According to the heat demand cost deriving means for deriving the heat demand cost for each heat consumer based on the heat demand for each heat consumer derived by the heat demand quantity deriving means in the above characteristic configuration. Since the heat demand cost deriving means derives the heat demand cost based on the heat demand amount for each heat consumer, the derived heat demand cost is an objective one reflecting the amount of heat consumed by the heat consumer. It becomes.

Of the above features, the heat demand cost deriving means includes a cost required to operate the common heat source device to generate the heat source hot water and a cost required to circulate the heat source hot water to the heat source hot water circulation line. According to deriving the heat demand cost by apportioning the heat demand for each heat consumer , the heat demand cost deriving means uses a common heat source device as an expense necessary for operating the heat supply system. the cost and heat source hot water required to generate the heat source hot water in consideration of the cost required for circulating the heat source hot water circulation line driving, and the cost to be apportioned heat demand of the heat consumer, Deriving heat demand cost. In other words, by operating equipment such as a common heat source device and heat source hot water circulation line, the cost required to circulate the heat source hot water equally to all heat consumers is prorated by the heat demand of each heat consumer. is doing. Since the heat demand of each heat consumer corresponds to the load given to the shared equipment, it can be said that the heat demand cost that is prorated by the heat demand is objective. Accordingly, objective heat demand costs can be derived without unfairness for each heat consumer.
In addition, according to the above-described characteristic configuration, a heat supply system that can simplify the derivation of heat consumption for each heat consuming device and can rationally derive the heat demand cost for each heat consumer. Can be provided.

Still another characteristic configuration of the heat supply system according to the present invention includes a heat storage hot water storage tank capable of storing heat from the heat source hot water taken in by the individual hot water circulation means and dissipating heat to the hot water, and low-temperature water lower in temperature than the heat source hot water as the heat. Equipped with a low-temperature water supply line to supply customers,
Provided between the intake section and the heat storage hot water storage tank is a mixing section capable of mixing the low temperature water supplied from the low temperature water supply line with the heat source hot water, and between the heat storage hot water storage tank and the return section. Has a dispensing section for dispensing hot water,
The heat storage section provided in the heat storage hot water tank is configured to be able to exchange heat with the heat source hot water taken in from the intake section or mixed with the low temperature water,
The heat consumption amount deriving means is configured to determine the heat based on the temperature of the low-temperature water supplied from the low-temperature water supply line, the temperature of the hot water supplied from the discharge unit, and the amount of discharged hot water. It is in the point which derives the heat consumption in the hot water supply apparatus as a consuming apparatus.

  According to the above characteristic configuration, the amount of heat consumed by the hot water supply device as the heat consuming device of the heat consumer is the temperature of the low temperature water supplied from the low temperature water supply line, the temperature of the hot water supplied from the payout unit, It is derived based on the amount of hot water supply. Therefore, it is ensured that the heat demand of the heat consumer for the heat source device is an objective value based on the heat consumed by the heat consumer.

Still another characteristic configuration of the heat supply system according to the present invention is that a heat storage hot water storage tank capable of storing heat from the heat source hot water taken in by the individual hot water circulation means and dissipating heat to the hot water, and a hot water supply device as the heat consuming device include: A low-temperature water supply line that supplies low-temperature water having a temperature lower than that of heat source hot water to the heat consumer is configured to discharge hot water obtained by heating the low-temperature water by the heat storage hot water tank from the heat storage hot water storage tank. ,
The heat consumption deriving means is based on the temperature of the low temperature water supplied from the low temperature water supply line, the temperature of the hot water discharged from the heat storage hot water storage tank, and the amount of hot water discharged. It is in the point which derives the heat consumption in the hot water supply apparatus as a heat consuming apparatus.

  According to the above characteristic configuration, the amount of heat consumed by the hot water supply device as the heat consuming device of the heat consumer is the temperature of the low temperature water supplied from the low temperature water supply line and the temperature of the hot water supplied from the heat storage hot water storage tank. And the amount of hot water supplied. Therefore, it is ensured that the heat demand of the heat consumer for the heat source device is an objective value based on the heat consumed by the heat consumer.

Still another characteristic configuration of the heat supply system according to the present invention includes a heat storage hot water storage tank capable of storing heat from the heat source hot water taken in by the individual hot water circulation means and dissipating heat to the hot water,
The hot water for the heat consuming device that circulates between the heat storage hot water tank and the heating or bath reheating device as the heat consuming device is provided by at least one of the heat source hot water and the heat storage section of the heat storage hot water tank in the heat storage hot water tank. Configured to be heatable,
The heat consumption amount deriving means includes a temperature of the hot water for the heat consuming device flowing into the heating or bath reheating device, a temperature of the hot water for the heat consuming device flowing out from the heating or bath reheating device, and the heat. The point is to derive the heat consumption amount in the heating or bath reheating device as the heat consuming device based on the flow rate of the hot water for the consuming device.

  According to the above characteristic configuration, the amount of heat consumed by the heating or bath reheating device as the heat consuming device of the heat consumer is the temperature of the hot water for the heat consuming device flowing into the heating or bath reheating device, and the heating or bath. It is derived based on the temperature of the hot water for the heat consuming device flowing out from the reheating device and the flow rate of the hot water for the heat consuming device. Therefore, it is ensured that the heat demand of the heat consumer for the heat source device is an objective value based on the heat consumed by the heat consumer.

Hereinafter, a heat supply system according to the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a schematic configuration of the entire system, and FIG. 2 is a configuration of a hot water heat source supply device 3 provided in each heat consumer 2 and a connection configuration with a heat source hot water circulation line 4 and a low temperature water supply line 5. Is shown.

As shown in FIG. 1, this heat supply system is a facility for each heat consumer 2 that is a plurality of hot water supply targets, and FIG. 1 shows an example for 20 heat consumers 2. . As will be described in detail later with reference to FIG. 2, in each heat consumer 2, a hot water supply device 50 as a heat consuming device, a bath reheating device 51, a heating device 52 such as a hot water type floor heating device or an air conditioning device. Is provided. Then, hot water supply at a temperature of 40 ° C. to 60 ° C., for example, is possible from the hot water supply device 50, and a circulation type heat circulation circuit 6 such as a bath reheating circuit 6a and a heating / hot water circuit 6b provided in each heat consumer 2 is provided. The hot water for the heat consuming device flowing inside is configured to be heated.
In this heat supply system, the heat source is a cogeneration facility as a common heat source device 7 provided for the plurality of heat consumers 2. Examples of this type of equipment 7 include gas engines, fuel cells, and micro gas turbines as distributed energy supply devices.

  In the example shown in FIG. 1, a common heat source device 7 is installed for 20 heat consumers 2, and a heat source hot water hot water storage tank for storing hot source hot water generated by the heat generated by the heat source device 7. 8 is provided. This heat source hot water hot water storage tank 8 may be regarded as an integral part of the heat source device 7, and is connected to the heat source hot water circulation line 4 provided for each of the door groups divided into two groups for every ten heat consumers. Yes.

  Each heat source hot water circulation line 4 is provided with a heat source hot water circulation pump 9 at the circulation base end portion 4a, and the heat source hot water makes a round of each ordered heat consumer 2 side, and then passes through the return portion 4b. It is configured to return to the heat source hot water hot water storage tank 8. Here, the supply temperature of the heat source hot water from the heat source hot water hot water storage tank 8 is about 75 to 85 ° C., and the return temperature to the heat source hot water hot water storage tank 8 is about 60 ° C.

As shown in FIG. 1, a regenerative carbon dioxide heat pump for recovering heat from the exhaust gas and outside air is provided as an auxiliary machine 14 for the heat source device 7. The heat recovered by the heat pump 14 can be used to warm the heat source hot water, and the preheat water in the preheat water tank 15 provided for the heat source hot water hot water storage tank 8 can be preheated. ing.
The preheated water tank 15 is configured to be replenished with 5 to 25 ° C. water, and is supplied to each heat consumer 2 from the low temperature water supply line 5 provided on the lower side of the preheated water tank 15. It is configured to be able to supply preheated water at 25 ° C. The supply of the preheated water is based on the operation of the preheated water supply pump 16, and as shown in the figure, the supply pressure of the preheated water is selected in the range of 150 to 200 kPa, which is lower than the pressure of the heat source hot water. . As shown in FIG. 1, the low-pressure water supply line 5 is branched to each heat consumer 2 on the downstream side, and a configuration used for hot water supply or the like is adopted.

<First Embodiment>
Below, with reference to FIGS. 1-3, the heat supply system of 1st Embodiment is demonstrated.
In this heat supply system, each heat consumer 2 is provided with a hot water heat source supply device 3, and hot water is supplied from the hot water heat source supply device 3 to the hot water supply device 50 and can be used as a heat medium. Is supplied to the bath chasing device 51 and the heating device 52. And the heat source warm water circulation means L1 which takes in heat source warm water from the heat source warm water circulation line 4 and returns heat source warm water to the return part 20 downstream of the circulation line from the heat source warm water intake part 19 is provided.

The heat supply system is provided with a heat supply system information processing device 40 for deriving a heat demand amount and a heat demand cost (heat supply fee) at each heat consumer 2. The heat supply system information processing device 40 is provided, for example, on the installer side of the heat source device 7 or on the operation manager side of the heat source device 7.
Each heat consumer 2 is provided with a heat consumer information processing device 60 for collecting information on the operation state of the heat consuming devices such as the hot water supply device 50, the bath reheating device 51, and the heating device 52. And the information regarding the operation state of the heat consuming apparatus in each heat consumer 2 is transmitted from the plurality of heat consumer information processing apparatuses 60 provided in each heat consumer 2 to the information processing apparatus 40 for heat supply system. Is transferred through. The heat supply system information processing device 40 and the heat consumer information processing device 60 can be realized by using a general computer having a communication function with other devices.

  As shown in FIG. 1, the heat supply system information processing device 40 is based on information related to the operating state of the heat consuming device received from the heat consumer information processing device 60, and is based on the hot water supply device 50, the bath reheating device 51, and the heating. The heat consumption amount deriving means 41 for deriving the heat consumption amount in the heat consumption device such as the device 52 is provided, and the heat demand amount of the heat consumer 2 for the heat source device 7 is calculated from the heat consumption amount derived by the heat consumption amount deriving means 41. A heat demand amount deriving unit 42 for deriving is provided. Further, the heat supply system information processing device 40 derives the heat demand cost for deriving the heat demand cost for each heat consumer 2 based on the heat demand for each heat consumer 2 derived by the heat demand amount deriving means 42. Means 43 are provided. As a result, it is possible to charge according to the heat demand of each heat consumer 2 when the shared heat source device 7 is operated.

  As shown in FIG. 2, in the heat source hot water circulation line 4 and each heat consumer 2 (specifically, the hot water heat source supply device 3 referred to in the present embodiment), the heat source hot water or a mixture in which low temperature water is mixed therewith Water is connected by a forward path 11 a and a backward path 11 b that flow without backflow through a heat storage hot water storage tank 10 provided in the hot water heat source supply device 3.

  The operation control of the heat source hot water circulation pump 9 will be described. As shown in FIG. 1, the heat source hot water hot water storage hot water according to the hot water temperature and amount of the return hot water returning to the heat source hot water hot water storage tank 8 through the heat source hot water circulation line 4. The delivery amount sent from the tank 8 to the heat source hot water circulation line 4 is configured to be controlled by the rotation speed of the heat source hot water circulation pump 9. In FIG. 1, a hot water temperature and amount intake line from the return side of each heat source hot water circulation line 4 to the heat source hot water circulation pump 9 is indicated by a one-dot chain line. The pressure of the heat source hot water flowing through the heat source hot water circulation line 4 is set to 200 to 800 kPa.

  In the present embodiment, as will be described later, because a part of the heat source hot water hot water supply device 3 provided in each heat consumer 2 is used for hot water supply, the heat source hot water circulation line is used. 4 needs to be replenished with water. Therefore, as shown in FIG. 1, a connection path 12 for connecting the low-temperature water to the low-temperature water supply line 5 and the heat-source hot water circulation line 4 is provided in the heat source hot water circulation line 4, and a replenishment unit 13 that can supply low-temperature water Is provided.

  This replenishment is performed by adjusting the opening and closing of the flow rate control valve 13b provided in the connection path 12 through which the low-temperature water flows through the booster mechanism 13a, and the heat source hot water hot water storage tank 8 is controlled to control the replenishment amount. The amount of low-temperature water to be replenished from the replenishing unit 13 is controlled according to the amount of return warm water that returns. In the example shown in FIG. 1, the return amount is estimated according to the level of hot water in the heat source hot water hot water storage tank 8, and the liquid level in a state where the pump drive is in a standard state is set to a certain level. Configured to keep.

  As shown in FIG. 2, a low-temperature water supply line 5 and a heat source hot water circulation line 4 are shown from the left side, and a hot water heat source supply device 3 in each heat consumer 2 is shown. On the right side of the figure is a hot water supply passage 17 for hot water supplied to the hot water supply device 50, a hot water circulation circuit for a heat consuming device used as a heat medium (a bath hot water reheating hot water circuit for supplying to the bath reheating device 51). 6a and a heating and hot water circuit 6b) for supplying to the heating device 52 are shown.

The warm water heat source supply device 3 includes a heat storage hot water storage tank 10 as its main equipment. This heat storage hot water storage tank 10 has a double cylinder structure as shown in FIG. 2, and includes a cylindrical heat storage unit 10a in which a heat storage material is housed.
Further, the outer cylinder flow path 10b formed in the outer cylinder is configured such that the in-cylinder water flows from the vertical direction to the lower side, and the hot water storage path 10c formed in the inner cylinder is formed in the vertical direction. Hot water is stored from the bottom to the top. Therefore, this heat storage hot water storage tank 10 is of a stratified type, and high temperature water can be obtained from the upper part of the hot water storage passage 10c.

  As shown in the figure, the outer cylinder flow path 10b is connected to the hot water storage passage 10c at the tank bottom 10d, and hot water having a predetermined temperature generated in the outer cylinder flow path 10b is also obtained by utilizing the heat storage of the heat storage section 10a. The hot water storage channel 10c is configured to be stored.

  By adopting the above configuration, the heat storage material housed in the heat storage unit 10a and the hot water (heat source hot water or mixed water) flowing through the outer cylinder flow path 10b can exchange heat. This heat storage material is a latent heat storage material that causes a phase change between the solid phase and the liquid phase at a temperature intermediate between the temperature of the heat source hot water and the temperature of the low temperature water. When introduced into 10b, heat can be stored, and heat can be dissipated when hot water having a temperature lower than the temperature of the heat storage material flows into the outer cylinder channel 10b in the heat storage state.

  As shown in FIG. 2, a coil heat exchanger 18 that is a spiral tube that constitutes the heating / warming water circuit 6b and a spiral tube that constitutes the bath reheating hot water circuit 6a in order from the upper stage side to the upper position of the outer cylinder flow path 10b. The coil heat exchanger 18 is provided. With this configuration, by flowing the heat source hot water to the outside of the coil heat exchanger 18, the hot water for the heat consuming device flowing in the circuits 6a and 6b can be heated from at least one of the heat source hot water and the heat storage unit 10a.

A tank inlet 10e, which is the upper end of the outer cylinder flow path 10b, is connected to the heat source hot water circulation line 4. This connection path is the forward path 11a described above, and in the present application, the base end portion of the forward path 11a is referred to as a capturing portion 19.
A tank outlet 10 f that is the upper end of the hot water storage passage 10 c is also connected to the heat source hot water circulation line 4. This connecting path is the return path 11b described earlier, and in the present application, the tip of the return path 11b is referred to as the return section 20.
The positional relationship between the intake portion 19 and the return portion 20 is such that the former 19 is upstream with respect to the latter 20 in the heat source hot water flow direction. As shown in FIG. 2, a configuration in which both parts are connected by a bypass path 21 having a predetermined flow path resistance is adopted for the flow paths passing through the heat consumers 2.

Regarding the hot water advection from the intake unit 19 to the return unit 20, a configuration is adopted in which the heat source hot water circulation pump 9 described above and the hot water pump 10g provided in each of the hot water heat source supply devices 3 handle this.
That is, in the present application, the heat source hot water is taken into the heat storage hot water storage tank 10 from the heat source hot water circulation line 4, and the return water 20 on the downstream side of the circulation line from the heat source hot water take-in part 19 is transferred from the heat storage hot water storage tank 10. The door warm water circulation means L1 which returns a part or all is provided.

Hereinafter, the configuration of the hot water heat source supply device 3 of the first embodiment provided for the door-to-door hot water circulation means L1 in the heat supply system will be described in detail.
As shown in FIG. 2, a mixing portion 22 capable of mixing low temperature water supplied from the low temperature water supply line 5 is provided in the forward path 11a, and hot water is supplied between the tank outlet 10f and the return portion 20 of the return path 11b. A payout unit 23 for payout is provided.

  As shown in FIG. 2, the forward path 11a is provided with an opening / closing valve 24 and a flow rate adjusting valve 25 in order from the intake portion 19 side, and the mixing unit 22 is provided between the flow rate adjusting valve 25 and the tank inlet 10e. Is provided. The mixing unit 22 employs a configuration in which low-temperature water flows from the low-temperature water supply line 5 through the open / close valve 24 and the check valve 26.

  As described above, in this heat supply system, the flow rate is adjusted by setting the pressure of the heat source hot water flowing through the heat source hot water circulation line 4 higher than the pressure of the low temperature water flowing through the low temperature water supply line 5. By adjusting the valve 25, it becomes possible to adjust the amount ratio of the heat source hot water and low temperature water sent to the heat storage hot water tank 10 side, and the hot water storage water is taken out from the heat storage hot water tank 10 through the tank outlet 10f. The temperature of the hot water taken out from 23 can be adjusted.

  Although the temperature of the warm water flowing into the outer cylinder flow path 10b is controlled from the above configuration, the warm water is heated from the relationship between the temperature of the warm water and the temperature of the heat storage material existing in the heat storage unit 10a. It is also possible to store heat.

  As shown in FIG. 2, the flow rate adjustment valve 25 has its opening degree adjusted according to the temperature of the hot water at the tank inlet 10e and the temperature of the hot water at the tank bottom 10d so that the temperature of the hot water storage becomes a desired temperature. It is configured.

  The return path 11b employs a configuration in which the hot water pump 10g, the check valve 26, and the open / close valve 24 are connected to the return portion 20 from the tank outlet 10f side. The payout portion 23 is provided between the hot water pump 10 g and the check valve 26.

A hot water supply temperature detector 29 and a stop cock 27 are interposed on the downstream side of the discharge portion 23 to the hot water outlet 17.
The hot water temperature detector 29 is separately connected to the low temperature water supply line 5, and mixes low temperature water with the discharged hot water according to the detected hot water temperature, thereby supplying hot water at a desired temperature to the outlet side. Can be obtained at

  The hot water pump 10g is started / stopped in accordance with a hot water pump control signal S generated according to a bath reheating hot water circuit 6a, a heating hot water circuit 6b, and a heat storage / radiation signal. Furthermore, a feedback configuration is adopted for the operation, and the operation is performed so that both are appropriate by looking at the temperature and flow rate of the hot water flowing in the return path.

Hereinafter, the operation state of the hot water heat source supply device 3 will be described in the order of a heat storage operation state, a heat radiation operation state, a hot water supply operation state, and a heat load operation state.
1 Heat storage operation state This state is an operation state for the purpose of storing heat in the heat storage material provided in the heat storage unit 10a in a time zone where there is no demand for hot water supply or heat load, such as a midnight time zone.
In this operation state, the flow rate adjustment valve 25 provided in the forward path 11a is set to a fully open state or nearly full open state, and the hot water pump 10g is set to a movable state.
In this operation state, the heat source hot water flows through the outer cylinder channel 10b of the heat storage hot water storage tank 10, and heat storage in the heat storage unit 10a can be completed.

2 Heat Dissipation Operation State This state is basically an operation state that is executed to obtain hot water at a desired temperature, and heat is supplied from the heat storage unit 10a in the heat storage state to the water flowing into the outer cylinder flow path 10b. This is an operating state in which heat storage is effectively used.
In this operating state, the flow rate adjusting valve 25 provided in the forward path 11a is adjusted in opening according to the temperature of hot water to be obtained and the hot water pump 10g is stopped. However, in this state, for the purpose of recovering and using the stored heat, the flow rate is adjusted so that the temperature of the mixed water flowing in the outer cylinder flow path 10b is lower than the temperature of the heat storage material, and the hot water is stored. Thus, the operation is controlled so as to obtain a desired temperature. As a result, hot water at a desired temperature can be obtained in this operating state.

2-1 Hot water supply operation state When hot water is supplied, the hot water supply temperature is specified separately. Then, by opening the stop cock 27, hot water can be discharged.
At this time, the apparatus 3 is basically maintained in the heat radiation operation state described above, and predetermined hot water is discharged from the discharge unit 23 while recovering heat from the heat storage unit 10a. Fine temperature adjustment is performed by adjusting the amount of low-temperature water supplied by the hot water supply temperature adjustment valve 28 based on the temperature detected by the hot water supply temperature detector 29. In addition, after the heat storage unit 10a has finished radiating heat, heat source hot water is taken in so that the lower hot water temperature at the bottom 10d of the tank provided in the lower part of the hot water storage channel 10c does not fall below the specified hot water supply temperature, thus maintaining a good hot water supply state. .
As a result, hot water having a desired temperature can be obtained at the outlet.

2-2 Heat load operation state The heat load operation is an operation state in which the bath is chased and the heating / warming water is reheated. In this state, the flow rate adjustment valve 25 is requested from a request for quick reheating. The hot water pump 10g is operated with the state of being fully open or close to pre-open.
In this operation, an operation state in which the heat source hot water flows outside the coil heat exchanger 18 disposed in the vicinity of the tank inlet 10e is realized, and the reheating and reheating can be performed satisfactorily.

  Next, a method for deriving the heat demand cost in the heat consumer 2 of this heat supply system will be described with reference to FIG. FIG. 3 is a simplified version of FIG. 2, and the hot water heat source supply device 3 that takes in the heat source hot water from the hot water heat source circulation line 4 and takes in the low temperature water from the low temperature water supply line 5 is a hot water supply as a heat consuming device. It is a schematic block diagram when supplying hot water to the device 50 and supplying hot water for the heat consuming device to the bath reheating device 51 and the heating device 52.

At this time, a temperature detection unit 70 that measures the temperature of the low-temperature water flowing through the low-temperature water supply line 5, a temperature detection unit 71 that measures the temperature of the hot water discharged to the hot water supply device 50, and hot water to the hot water supply device 50 A flow rate detector 72 for measuring the payout amount is provided.
Moreover, the temperature detection part 73 which measures the temperature of the hot water for heat consumption apparatuses supplied to the bath reheating apparatus 51 from the thermal storage hot water storage tank 10, and the hot water for heat consumption apparatuses returned to the thermal storage hot water storage tank 10 from the bath reheating apparatus 51 A temperature detection unit 74 that measures the temperature and a flow rate detection unit 75 that measures the flow rate of the hot water for the heat consuming device supplied from the heat storage hot water storage tank 10 to the bath reheating device 51 are provided.
Further, the temperature detector 76 that measures the temperature of the hot water for the heat consuming device supplied from the heat storage hot water storage tank 10 to the heating device 52, and the temperature of the hot water for the heat consuming device returned from the heating device 52 to the heat storage hot water storage tank 10 are measured. A temperature detector 77 and a flow rate detector 78 for measuring the flow rate of the hot water for the heat consuming device supplied from the heat storage hot water storage tank 10 to the heating device 52 are provided.
Each of the temperature detection units described above can be realized by using a thermocouple or the like provided in a flow path through which low-temperature water or hot water for a heat consuming device flows. Further, each of the flow rate detection units described above derives a flow rate by detecting the number of rotations of a pump (not shown) through which low temperature water or hot water for a heat consuming device flows.
However, the above-described temperature detection unit and flow rate detection unit may be replaced with an existing thermometer or flow meter.

  The heat consumer information processing device 60 collects information regarding the operating state of the heat consuming device obtained by each temperature detection unit and each flow rate detection unit via a communication line such as a LAN. Then, the heat consumer information processing device 60 transmits the collected information on the operation state of the heat consuming device to the heat supply system information processing device 40 via a communication line such as a telephone line or an optical fiber.

  In the heat supply system information processing apparatus 40 that collects information related to the operation state of the heat consuming apparatus in each heat consumer 2, the heat demand of each heat consumer 2 is derived by the heat demand deriving means 42. Specifically, the heat consumption amount deriving means 41 derives the heat consumption amount in each heat consumption device such as the hot water supply device 50, the bath chase device 51, and the heating device 52 in the heat consumer, and derives the heat demand amount. The means 42 adds up the heat consumption in each heat consuming device, and derives the heat demand of each heat consumer 2 for the heat source device 7.

For example, the heat consumption amount deriving means 41 supplies low temperature water to the hot water heat source supply device 3 at a water supply temperature: T50: in, and is discharged to the hot water supply device 50 at a hot water supply temperature: T50: out. When the heat consumption is performed at the hot water supply flow rate: f50, the heat consumption amount: Q50 in the hot water supply apparatus 50 is derived as Q50 = (T50: out−T50: in) × f50.
Further, the heat consumption amount deriving means 41 is supplied with heat source hot water from the heat storage hot water storage tank 10 to the heating device at an inflow temperature: T52: in, and from the heating device 52 to the heat storage hot water storage tank at an outflow temperature: T52: out. Then, when heat is consumed at the heating flow rate f52 in the heating device 52, the heat consumption Q52 in the heating device 52 is derived as Q52 = (T52: in-T52: out) × f52.
Similarly, in the heat consumption amount deriving means 41, the heat source hot water flows from the heat storage hot water storage tank 10 into the bath reheating device at an inflow temperature: T51: in, and the outflow temperature from the bath reheating device 51 to the heat storage hot water storage tank side: T51: Outflowing out, and in the bath reheating device 51, when the bath replenishing flow rate: f51, when heat is consumed, the heat consumption amount in the bath retreating device 51: Q51, Q51 = (T51: in-T51: out) × f51.
Then, the heat demand amount deriving means 42 derives the heat demand amount in the heat consumer 2 by summing up the heat consumption amounts in the respective heat consumption devices derived as described above.

Furthermore, the heat demand cost deriving unit 43 derives the heat demand cost for each heat customer based on the heat demand amount of the heat customer derived by the heat demand amount deriving unit 42. The joint costs generated by all heat customers to operate this heat supply system as a whole are the costs required to generate heat source hot water by operating the heat source device, and circulate the heat source hot water to the heat source hot water circulation line Including maintenance costs such as costs required to For example, the heat demand cost deriving means 43 calculates the amount of gas used in the heat supply system, the amount of electricity used, the raw material / fuel cost calculated from the amount of water used, the depreciation cost of various facilities, the maintenance management cost, the operation cost, etc. Can be derived monthly.
As a result, the heat demand cost deriving means 43 can derive the heat demand cost (heat supply fee) of each heat consumer by apportioning the joint cost by the amount of heat demand of each heat consumer. For example, when the heat demand of the specific heat consumer 2 is a, the total heat demand of the total heat consumer 2 is A, and the joint cost is C, the heat demand cost of the specific heat consumer 2 : C can be derived from the following equation.

c = C × a / A

<Second Embodiment>
FIG. 4 shows a hot water heat source supply device 30 in the heat supply system of the second embodiment. The heat supply system of the second embodiment is obtained by replacing the hot water heat source supply device 3 of the heat supply system described in the first embodiment with a hot water heat source supply device 30 shown in FIG. Although the heat source hot water supply device 30 of the heat supply system of the second embodiment will be described below, description of the same configuration as that of the first embodiment will be omitted.

  Similarly to the heat supply system of the first embodiment, the heat supply system of the second embodiment is provided with a hot water heat source supply device 30 in each heat consumer 2, and hot water is supplied from the hot water heat source supply device 30 to the hot water supply line. The hot water for the heat consuming device is supplied to the hot water supply device 51 and the heating device 52. Then, the heat source hot water supplied from the heat source hot water hot water storage tank 8 flows in order and returns to the heat source hot water hot water storage tank 8, and the heat source hot water is taken in from the heat source hot water circulation line 4. A hot water circulating means L2 that returns the heat source hot water to the return portion 20 on the downstream side of the circulation line from the intake portion 19. The door-to-door hot water circulation means L2 includes a three-way valve 33, a header 34, and a bypass path 21. And the flow volume of the heat source warm water taken in from the taking-in part 19 can be adjusted by adjusting the opening degree of each three-way valve 33. However, since it is not necessary to supply water into the heat source hot water circulation line 4 in the heat supply system of the present embodiment, the connection path 12, the supply unit 13, the pressure increasing mechanism 13a and the flow rate control valve 13b shown in FIG. 1 can be omitted. It is.

The heat storage hot water storage tank 32 of 2nd Embodiment shown in FIG. 4 is the structure similar to the heat storage hot water storage tank 10 demonstrated in 1st Embodiment. This heat storage hot water storage tank 32 has a double cylinder structure as shown in FIG. 4, and includes a cylindrical heat storage unit 10a in which a heat storage material is housed in an outer shell.
Further, the outer cylinder flow path 10b formed in the outer cylinder is configured such that the in-cylinder water flows from the vertical direction to the lower side, and the hot water storage path 10c formed in the inner cylinder is formed in the vertical direction. Hot water is stored from the bottom to the top. Therefore, this heat storage hot water storage tank 10 is of a stratified type, and high temperature water can be obtained from the upper part of the hot water storage passage 10c.

As shown in FIG. 4, a spiral heat source hot water passage 37 through which the heat source hot water flows and a circulating water heat transfer tube which is a spiral tube constituting the bath reheating hot water circuit 6a are sequentially provided from the upper stage side of the outer cylinder flow passage 10b. 38 and a circulating water heat transfer pipe 38 which is a spiral pipe constituting the heating / warming water circuit 6b. In this configuration, the hot water for the heat consuming device flowing in the circuits 6 a and 6 b can be heated by flowing the heat source hot water through the outer cylindrical flow path 10 b outside the circulating water heat transfer tube 38.
As described above, the hot water heat source supply device 30 of the present embodiment is configured to obtain hot water only by heat exchange with the heat source hot water.

  Further, by adopting the above configuration, the heat storage material and the heat source hot water stored in the heat storage section 10a and the heat source hot water passage 37 through which the heat source hot water flows and the low temperature water supply line 5 are taken and flow through the outer cylinder flow passage 10b. Heat exchange with low-temperature water is possible. This heat storage material is a latent heat storage material that causes a phase change between the solid phase and the liquid phase at a temperature intermediate between the temperature of the heat source hot water and the temperature of the low temperature water. For example, the temperature of the heat source hot water is the heat storage unit 10a. The heat can be stored when the temperature is higher than the temperature, and heat can be radiated when heat source hot water having a temperature lower than the temperature of the heat storage material flows through the heat source hot water passage 37 in the heat storage state. Moreover, the hot water discharged from the heat storage hot water storage tank 32 to the hot water supply line 36 is returned to the low temperature water supply line 5 before flowing into the heat storage hot water storage tank 32 by using the circulation pump 39, and further the heat source hot water and heat storage. It is also possible to exchange heat with the part 10b.

Further, in the present embodiment, similarly, the heat supply system information processing apparatus 40 can derive the heat demand cost of each heat consumer 2. That is, in the heat supply system according to the second embodiment as described above with reference to FIG. 3, the heat consumer information processing device 60 collects information on the operating state of the heat consuming equipment in each heat consumer 2. Then, the information is transmitted to the heat supply system information processing apparatus 40. Then, in the heat supply system information processing apparatus 40, the heat demand amount of each heat consumer 2 is derived by the heat demand amount deriving means 42. Specifically, the heat consumption amount deriving means 41 derives the heat consumption amount in each heat consumption device such as the hot water supply device 50, the bath chase device 51, and the heating device 52 in the heat consumer, and derives the heat demand amount. The means 42 adds up the heat consumption in each heat consuming apparatus, and derives the heat demand of each heat consumer.
For example, the heat consumption amount deriving means 41 supplies low temperature water to the hot water heat source supply device 30 at a feed water temperature: T50: in, and is discharged to the hot water supply device 50 at a hot water supply temperature: T50: out. When heat consumption is performed at the hot water supply flow rate: f50, the heat consumption amount: Q50 in the hot water supply apparatus 50 is derived as Q50 = (T50: in-T50: out) × f50.
Further, the heat consumption amount deriving means 41 has the heat source hot water flowing in from the heat storage hot water storage tank 32 to the bath reheating device 51 at the inflow temperature: T51: in, and the outflow temperature from the bath reheating device 51 to the heat storage hot water storage tank side: When T51: outflows and heat is consumed at the bath chase device 51 at the bath chase device 51, heat consumption at the bath chute device 51: Q51 is Q51 = (T51: out-T51: in) × f51.
Similarly, in the heat consumption amount deriving means 41, heat source hot water flows from the heat storage hot water storage tank 32 into the heating device 52 at an inflow temperature: T52: in, and an outflow temperature from the heating device 52 to the heat storage hot water storage tank 32 side: T52: When outflowing out and heat is consumed in the heating device 52 at the heating flow rate: f52, the heat consumption amount: Q52 in the heating device 52 is derived as Q52 = (T52: in-T52: out) × f52.
Then, the heat demand amount deriving means 42 derives the heat demand amount in the heat consumer 2 by summing up the heat consumption amounts in the respective heat consumption devices derived as described above.

Furthermore, the heat demand cost deriving unit 43 derives the heat demand cost for each heat customer based on the heat demand amount of the heat customer derived by the heat demand amount deriving unit 42. The joint costs generated by all heat customers to operate this heat supply system as a whole are the costs required to generate heat source hot water by operating the heat source device, and circulate the heat source hot water to the heat source hot water circulation line Including maintenance costs such as costs required to For example, the heat demand cost deriving means 43 calculates the amount of gas used in the heat supply system, the amount of electricity used, the raw material / fuel cost calculated from the amount of water used, the depreciation cost of various facilities, the maintenance management cost, the operation cost, etc. Can be derived monthly.
As a result, the heat demand cost deriving means 43 can derive the heat demand cost (heat supply fee) of each heat consumer by apportioning the joint cost by the amount of heat demand of each heat consumer. For example, when the heat demand of the specific heat consumer 2 is a, the total heat demand of the total heat consumer 2 is A, and the joint cost is C, the heat demand cost of the specific heat consumer 2 : C can be derived from the following equation.

c = C × a / A

<Another embodiment>
<1>
In the said embodiment, the operation state of the heat consumption apparatus provided in each heat consumer 2 is collected as heat consumption, and the example which derives the heat demand and heat demand cost of each heat consumer 2 based on it is demonstrated. However, the collected information on the operating state of the heat-consuming device may be used for another purpose. For example, the information processing apparatus 40 for heat supply system stores information on the measured heat consumption of each heat consuming device as time-series actual heat consumption for each heat consuming device. It is also possible to derive future time-series predicted heat consumption of consumer equipment. If enough heat is stored in the heat storage hot water storage tank in advance to cover the predicted heat consumption, the amount of heat is transferred to the heat consuming equipment without taking a large amount of heat from the heat source hot water flowing through the heat source hot water circulation line. Can provide. In other words, the heat supply system information processing device 40 raises the output of the heat source device 7 in advance and raises the temperature of the heat source hot water supplied to the heat source hot water circulation line 4 in advance, so that the heat consumption device can generate heat. Can be stored in the heat consumer 2 before it is consumed.
Further, the heat supply system information processing device 40 collects the operation reservation information from the heat consumer information processing device 60 when each heat consuming device is equipped with a function capable of making an operation reservation such as bathing. . Then, the information processing apparatus 40 for heat supply system converts the predicted heat consumption of the heat consuming device that can be predicted from the operation reservation information into the actual heat consumption of each heat consuming device measured as described above. In consideration of this, it is also possible to derive the predicted heat consumption in the future.

Furthermore, when the predicted heat demands obtained by summing the time-series predicted heat consumptions at the heat consumers 2 are derived for all the heat consumers 2, for example, in the evening bathing time zone, each heat consumer 2 The peak hours of the predicted heat demand may overlap. At this time, the amount of heat supplied from the heat source device 7 to each heat consumer 2 via the heat source hot water circulation line 4 is significantly smaller than the total predicted heat demand of each heat consumer 2, so the heat source hot water circulation The temperature of the heat source hot water flowing through the line 4 may be significantly reduced. Therefore, the heat supply system information processing apparatus 40 distributes the peak time zones of the actual heat demand of each heat customer 2 by notifying the heat customers 2 of the peak time zone of the predicted heat demand. Can be made. Thereafter, the information processing device 40 for the heat supply system derives the actual heat demand of each heat consumer 2 and then the peak time of the predicted heat demand notified by the peak time zone of the actual heat demand first. The heat customer 2 that is different from the belt is extracted. And the information processing apparatus 40 for heat supply systems can also give privileges, such as discounting a heat supply charge, to the extracted heat consumer 2 as having contributed to the equalization of heat demand.
Further, the heat supply system information processing apparatus 40 can increase the accuracy of the predicted heat demand as the number of operation reservations described above is increased. Therefore, the heat supply system information processing device 40 gives a privilege such as discounting the heat supply fee to the heat consumer 2 who has made a reservation for the operation of the heat consuming device as having contributed to the improvement of the heat demand prediction system. You can also. Furthermore, it can be said that it is useful for preparing the operation plan of the heat source device 7 so that the time when the operation reservation is made is earlier than the time when the heat consumption is actually performed. Therefore, the heat supply system information processing apparatus 40 can also give a privilege such as discounting the heat supply fee as the time when the operation reservation is made is earlier than the time when the heat consumption is actually performed.

<2>
In the said embodiment, although the low temperature water supplied to each heat consumer via a low temperature water supply line was made into preheated water, the water in a temperature range of about 5-25 degreeC is performed as it is, without performing preheating, as it is low temperature water It is good also as what supplies as.
Although an example in which a regenerative carbon dioxide heat pump is used as an auxiliary device has been shown, this auxiliary device may be any device that can recover the heat of the exhaust gas that the exhaust gas generated from the heat source device has.
The water to be replenished to the heat source hot water line may be preheated water as in the present application, or may be water obtained in a separate system from the low temperature water supply line.

  In the heat supply system according to the present invention, charging for a plurality of heat consumers who receive heat supply from a shared heat source device can be performed fairly based on the accurately derived heat demand.

The figure which shows schematic structure of the whole heat supply system The figure which shows the structure of the hot water heat source supply apparatus with which each heat consumer is equipped Schematic showing heat supply to hot water supply device, bath reheating device and heating device The figure which shows the structure of another hot water heat source supply apparatus with which each heat consumer is equipped

Explanation of symbols

2 Heat consumer 7 Heat source device 4 Heat source hot water circulation line L1 House-to-house hot water circulation means 41 Heat consumption deriving means 42 Heat demand deriving means

Claims (4)

A heat supply system in which the heat source hot water heated by the common heat source device is supplied to a plurality of heat consumers, and the heat held by the heat source hot water is consumed by the heat consumers of the heat consumers,
For the plurality of ordered heat consumers,
A heat source hot water circulation line configured so that the heat source hot water flows in order and returns to the heat source device, heat source hot water is taken in from the heat source hot water circulation line, and a heat source is returned to the return part downstream of the heat source hot water from the heat source hot water take-in part With a door-to-door hot water circulation means for returning hot water ,
As information on the operating state of the heat consuming device , provided with a communication line used when collecting temperature information and flow rate information capable of deriving the heat consumption consumed in the heat consuming device ,
An information processing device that collects information on the operating state via the communication line for deriving heat demand costs for each consumer,
Heat consumption deriving means for receiving heat supply from the heat source hot water flowing through the door-to-door hot water circulation means to the information processing apparatus and deriving heat consumption consumed in the heat consuming apparatus from information on the operating state A heat demand deriving means for deriving the heat demand of the heat consumer for the heat source device from the heat consumption derived by the heat consumption deriving means ,
A heat demand cost deriving means for deriving a heat demand cost for each heat consumer based on the heat demand for each heat consumer derived by the heat demand deriving means;
Further, the heat demand cost deriving means includes a cost required to operate the common heat source device to generate the heat source hot water and a cost required to circulate the heat source hot water to the heat source hot water circulation line. A heat supply system that derives the heat demand cost by apportioning the heat demand for each house . A heat storage hot water storage tank capable of storing heat from the heat source hot water taken in by the individual hot water circulation means and dissipating heat to the hot water, and a low temperature water supply line for supplying low temperature water lower than the heat source hot water to the heat consumer,
Provided between the intake section and the heat storage hot water storage tank is a mixing section capable of mixing the low temperature water supplied from the low temperature water supply line with the heat source hot water, and between the heat storage hot water storage tank and the return section. Has a dispensing section for dispensing hot water,
The heat storage section provided in the heat storage hot water tank is configured to be able to exchange heat with the heat source hot water taken in from the intake section or mixed with the low temperature water,
The heat consumption amount deriving means is configured to determine the heat based on the temperature of the low-temperature water supplied from the low-temperature water supply line, the temperature of the hot water supplied from the discharge unit, and the amount of discharged hot water. heat supply system of claim 1, wherein deriving the heat consumption in the water heater as a consumer device. A heat storage hot water storage tank capable of storing heat from the heat source hot water taken in by the individual hot water circulation means and dissipating heat to the hot water, and a hot water supply device as the heat consuming device supply low temperature water lower in temperature than the heat source hot water to the heat consumer. Comprising a low-temperature water supply line, configured to discharge hot water obtained by heating the low-temperature water by the heat storage hot water tank from the heat storage hot water tank,
The heat consumption deriving means is based on the temperature of the low temperature water supplied from the low temperature water supply line, the temperature of the hot water discharged from the heat storage hot water storage tank, and the amount of hot water discharged. The heat supply system of Claim 1 or 2 which derives | leads-out the heat consumption in the hot water supply apparatus as a heat consumption apparatus. A heat storage hot water storage tank capable of storing heat from the heat source hot water taken in by the individual hot water circulation means and dissipating heat to the hot water,
The hot water for the heat consuming device that circulates between the heat storage hot water tank and the heating or bath reheating device as the heat consuming device is provided by at least one of the heat source hot water and the heat storage section of the heat storage hot water tank in the heat storage hot water tank. Configured to be heatable,
The heat consumption amount deriving means includes a temperature of the hot water for the heat consuming device flowing into the heating or bath reheating device, a temperature of the hot water for the heat consuming device flowing out from the heating or bath reheating device, and the heat. The heat supply system as described in any one of Claims 1-3 which derives | leads-out the heat consumption in the heating or bath reheating apparatus as said heat consumption apparatus based on the flow volume of the warm water for consumption apparatuses.

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