KR102362508B1 - Control system for a solar assisted heat pump system with hybrid solar collectors - Google Patents

Abstract

The present invention relates to a control system of a hybrid heat pump system to which a composite heat collector is applied, and more particularly, to a case, a heat collecting plate provided inside the case and formed below a glass plate to collect solar energy, and the heat collecting plate inside A plurality of copper pipes that are integrally attached and absorb the heat of solar energy collected from the heat collecting plate into a working fluid transferred therein to transfer heat, and are formed at the ends of the plurality of copper pipes to receive heat from the copper pipe It is composed of a header portion that transmits to the heat collecting plate, and a heat insulator built into the lower end of the lower plate body to support the heat collecting plate, the copper pipe, and the header, and an air flow path is formed between the heat collecting plate and the heat insulator to transport air, and on one end of the case An inlet and an outlet are respectively formed in communication with the air flow path to allow air to flow in/out, and a slot-type damper is installed at the inlet and outlet to control the inlet and outlet of air, and the damper is opened and closed to the inside of the case. A composite collector configured to receive air heat energy through heat exchange by introducing air or to radiate internal air for cooling of a heat collector, a heat pump configured to be operated in connection with the composite collector, and heat storage in connection with the composite collector or heat pump It relates to a control system for a hybrid heat pump system to which a hybrid heat pump system is applied, which includes a hybrid heat pump system comprising a heat storage tank and a driving control unit for controlling a driving mode of the hybrid heat pump system.

Description

{Control system for a solar assisted heat pump system with hybrid solar collectors}

The present invention relates to a control system of a hybrid heat pump system using a solar and air heat composite collector, and more particularly, a heat pump system by forming solar heat and air heat energy into one combined heat source system, and utilizing it as a heat source for a heat pump A hybrid heat pump system using a solar and air heat composite collector that can increase the efficiency of the energy supply and utilize new and renewable energy sources more efficiently, that is, selectively acquire their energy It relates to a system that can most efficiently drive and control a system capable of heating and cooling in connection with a heat pump system through a liquid medium.

In general, in residential spaces such as houses or spaces such as offices and factories, cooling in summer and heating in winter are emerging as the main living environment factors. is currently doing.

Renewable energy refers to energy in various fields such as solar energy, geothermal energy, marine energy, bioenergy, and wind energy. Among them, solar energy and geothermal energy are promising energy fields that are widely used in the field of new and renewable energy. However, these energies have a low energy density and there are many limitations in their use due to mismatch between the heat source and the load.

In order to reduce these restrictions, it was a realistic method that renewable energy facilities are usually used in conjunction with fossil fuels. However, in recent years, as new and renewable energy technologies are more developed, technologies to increase energy efficiency by using various new and renewable energies convergence are being developed. .

In winter in Korea, the temperature is low and the load is large, so there is a problem that a single renewable energy source such as solar heat cannot handle the load. In the case of a heat pump system that utilizes air heat, there is a problem in that the efficiency of the system rapidly decreases as the outdoor temperature in winter falls below zero. In addition, from the viewpoint of the collector, there is a problem in that the durability of the entire system is lowered due to overheating on the collector side in summer.

In general, solar heat collectors are installed outdoors and used to accumulate solar thermal energy into storable thermal energy using a heating medium. It is a technology that uses heat energy. Therefore, there is a disadvantage that energy cannot be obtained in an environment where solar energy is insufficient. In addition, general solar collectors have a large-area high-heat absorption plate for heat collection, but this absorption plate can be used solely for absorbing solar energy, so its use is difficult at night when there is no insolation or in cloudy weather. There are limited problems.

In this regard, in Korean Patent Publication No. 10-1084569 (“Hybrid hot water supply system using a solar collector and a heat pump air conditioner”), a heat pump is organically connected to a heat pump type air conditioner when hot water is produced using a solar heat collector. When the air conditioner is operated in cooling mode in summer, waste heat of the outdoor heat exchanger acting as a condenser is recovered to produce additional hot water. Disclosed is a hybrid hot water supply system configured to select mixed storage.

Domestic Registered Patent Publication No. 10-1084569 (2011.11.11.)

The present invention has been devised to solve the problems of the prior art as described above, and an object of the present invention is to configure a system to simultaneously or selectively utilize solar thermal energy and air thermal energy as a heat source, and for this purpose, it is linked with a heat pump system Accordingly, it is to provide a control system for a hybrid heat pump system applied with a composite collector that can efficiently drive and control a system that can respond to a load by utilizing a relatively low temperature heat source.

The control system of the hybrid heat pump system applied with a composite heat collector according to an embodiment of the present invention includes a case, a heat collecting plate provided inside the case and formed below a glass plate to collect solar energy, and the heat collecting plate is integrally formed therein A plurality of copper pipes that are attached and the heat of solar energy collected from the heat collecting plate is absorbed into a working fluid transferred therein to transfer heat, and a plurality of copper pipes are formed at the ends of the plurality of copper pipes to receive heat from the copper pipe and transfer it to the outside and an insulating material embedded in the lower end of the lower plate body to support the heat collecting plate, the copper pipe and the header, and an air flow path is formed between the heat collecting plate and the heat insulating material to transport air, and an air flow path is provided on one end of the case An inlet and an outlet are respectively formed to communicate with the air inflow/outflow, and a slot-type damper is installed at the inlet and outlet to control the inlet and outflow of air, and by opening and closing the damper, external air flows into the inside of the case A composite collector configured to receive air heat energy through heat exchange or to radiate internal air for cooling of a heat collector, a heat pump configured to operate in connection with the composite collector, and a heat storage tank connected to the composite collector or heat pump to store heat and a hybrid heat pump system comprising

Furthermore, the driving control unit operates the heat pump when the amount of solar radiation supplied to the composite collector is greater than or equal to a preset minimum insolation amount and is less than a preset reference amount of insolation, and a latent heat chamber filled with a phase change material at the tip of the evaporator of the heat pump is added, the operation of the transfer fan of the composite collector is turned off, and the supply liquid collected from solar heat is passed through the latent heat chamber by indirect heat exchange through the supply pipe through the header part, and is used as the evaporative heat source of the evaporator, and back to the composite collector It is circulated, and the condenser of the heat pump is connected to a heat storage tank and is driven and controlled to store heat.

Furthermore, the driving control unit operates the heat pump when the amount of solar radiation supplied to the composite collector is less than a predetermined minimum insolation amount, and a latent heat chamber filled with a phase change material is added to the tip of the evaporator of the heat pump, and the composite The operation of the transfer fan of the collector is turned on, and the supply liquid collected from the air heat by the operation of the transfer fan passes through the latent heat chamber by indirect heat exchange through the supply pipe through the header part, and is used as an evaporation heat source of the evaporator, again a composite collector is circulated, and the condenser of the heat pump is connected to a heat storage tank and is driven and controlled to store heat.

Furthermore, when the amount of insolation supplied to the composite collector is greater than or equal to a preset minimum insolation, greater than or equal to a preset reference insolation, and less than a preset maximum insolation, the operation of the heat pump is OFF, and the transfer fan of the composite collector is turned off, and the supply liquid collected from solar heat is stored in the heat storage tank by a supply pipe through the header part, and the driving control is controlled so that it is circulated back to the composite collector.

Furthermore, when the amount of insolation supplied to the composite collector is greater than or equal to a preset minimum insolation, greater than or equal to a preset reference insolation, and greater than or equal to a preset maximum insolation, the operation of the heat pump is OFF, and the transfer fan of the composite collector is turned on, and by the operation of the transfer fan, the superheated air inside the composite collector flows through the air flow path, and external air flows in and radiates heat. It is characterized in that the driving is controlled as much as possible.

Furthermore, the latent heat chamber has a tank in coil type heat exchanger structure, the inside of the coil circulates in the liquid medium of the composite collector, and the inside of the tank is filled as PCM (phase change material), and By providing heat transfer and supplying energy to the evaporator by utilizing the latent heat of the PCM material, the temperature change of the evaporator can be significantly reduced, thereby improving the efficiency of the heat pump system and enhancing the durability of the device.

The control system of the hybrid heat pump system applied with the hybrid heat collector of the present invention according to the above configuration increases energy efficiency by simultaneously or selectively utilizing solar heat and air heat, and in terms of load response capability, which is one of the disadvantages of new and renewable energy, It is to provide the effect of appropriately responding to the load in any case by using the energy of the combined operation.

This is to provide the effect of increasing the efficiency of the entire solar system by more than 25% by directly using the thermal energy of the composite collector as a heat source for the heat pump evaporator, thereby lowering the operating temperature of the collector by 20 °C or more.

In addition, by using the composite collector, the overall piping is simplified and the control elements are simplified, thereby simplifying the construction of the system and reducing the cost, thereby providing the effect of expanding the distribution.

1 is a block diagram illustrating a control system of a hybrid heat pump system to which a composite heat collector is applied according to an embodiment of the present invention.
2 is a perspective view illustrating a partial cross-section of a composite collector applied to a control system of a hybrid heat pump system to which a composite collector is applied according to an embodiment of the present invention.
3 is a schematic diagram illustrating a composite collector applied to a control system of a hybrid heat pump system to which a composite collector is applied according to an embodiment of the present invention.
4 is a perspective view showing the lower end of the composite collector applied to the control system of the hybrid heat pump system to which the composite collector is applied according to an embodiment of the present invention.
5 and 6 are block diagrams illustrating a first mode driving example of a control system of a hybrid heat pump system to which a hybrid heat pump system is applied according to an embodiment of the present invention.
7 and 8 are block diagrams illustrating a second mode driving example of a control system of a hybrid heat pump system to which a hybrid heat pump system is applied according to an embodiment of the present invention.
9 and 10 are block diagrams showing a driving embodiment of the third mode of the control system of the hybrid heat pump system to which the hybrid heat pump system is applied according to an embodiment of the present invention.
11 and 12 are block diagrams illustrating a driving embodiment of the fourth mode of the control system of the hybrid heat pump system to which the hybrid heat pump system is applied according to an embodiment of the present invention.
13 is a flowchart illustrating a control method of a hybrid heat pump system to which a composite heat collector is applied according to an embodiment of the present invention.
14 is a flowchart illustrating a control method of a hybrid heat pump system to which a composite heat collector is applied according to another embodiment of the present invention.

Hereinafter, a control system of a hybrid heat pump system to which a composite heat collector of the present invention is applied will be described in detail with reference to the accompanying drawings. The drawings introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms. Also, like reference numerals refer to like elements throughout.

At this time, if there is no other definition in the technical terms and scientific terms used, it has the meaning commonly understood by those of ordinary skill in the art to which this invention belongs, and in the following description and accompanying drawings, the subject matter of the present invention Descriptions of known functions and configurations that may unnecessarily obscure will be omitted.

In addition, a system refers to a set of components including devices, instruments, and means that are organized and regularly interact to perform necessary functions.

The control system of a hybrid heat pump system applied with a composite collector according to an embodiment of the present invention is for efficiently driving and controlling a hybrid heat pump system by a solar and air heat composite collector,

Let's first learn about the solar and air thermal composite collectors,

The composite collector acquires solar thermal energy like a conventional collector when there is solar radiation, and it relates to a collector that can acquire energy for 24 hours because it can acquire air thermal energy at insufficient insolation or at night.

This can be applied to a wide range of applications. Like the existing collector, it can be used for hot water supply as well as in the absence of solar radiation or at night time, the obtained air heat energy can be used as a heat source for the heat pump to produce hot water. The efficiency is remarkably increased, and a temperature sensor and a transfer fan are built-in inside the collector to selectively acquire solar heat and air heat. Due to this structure, when the collector overheats in summer, the hot air in the collector is discharged to the outside, thereby cooling the collector. This relates to a hybrid solar collector that uses solar and air heat in combination, which can increase the durability of the collector, such as damage due to overheating, and is connected with the heating and cooling system to supply a heating and cooling heat source to a place requiring heating and cooling loads.

In recovering the heat source, a liquid method is applied to the heating medium. This is to efficiently drive and control the heat pump system, which is a simple system, because one type of heating medium is used to obtain solar heat energy and air heat energy.

In addition, when the heat energy obtained from the composite collector is used as a heat source for the heat pump evaporator (especially in the case of the utilization of air heat energy), the temperature of the outside air decreases a lot in winter, so that the evaporator also falls below zero. In this case, the efficiency of the heat pump system is lowered and there is a strain on the equipment. To solve this problem, the evaporator of this device uses PCM (phase change material) to supply energy to the evaporator by utilizing the latent heat of the PCM material to significantly reduce the temperature change of the evaporator, improving the efficiency of the heat pump system and It is possible to provide a heat pump system capable of increasing the durability of the device.

In addition, in producing energy by utilizing the heat source, it is possible to provide a heat pump system that solves the problem of mismatch between the heat source and the load by providing an independent buffer heat storage tank in order to apply a separate heat shrinkage method to one side of the heat pump.

In addition, if we first learn about the hybrid heat pump system applied to the composite collector,

2 to 4 , a case 10 and a heat collecting plate 2 provided on the inside of the case 10 and formed below the glass plate 1 to collect solar energy, and the heat collecting plate 2 ), a plurality of copper pipes (3) integrally attached to the inside and the heat of solar energy collected from the heat collecting plate (2) is absorbed into the working fluid transferred therein to transfer heat, and the plurality of copper pipes (3) A header part (4) formed at the end of the copper pipe (3) to receive heat from the copper pipe (3) and transfer it to the outside, and at the lower end of the lower plate body to support the heat collecting plate (2), the copper pipe (3), and the header part (4). It is composed of a built-in heat insulating material 5, and an air flow path 11 is formed between the heat collecting plate 2 and the heat insulating material 5 to transport air, and an air flow path 11 and an air flow path 11 are formed on one end of the case 10. An inlet 12 and an outlet 13 are respectively formed to communicate with each other so that air flows in/out, and a slot-type damper 20 is installed at the inlet 12 and the outlet 13 to control the inlet and outlet of air, By opening and closing the damper 20, external air is introduced into the inside of the case 10 to obtain air heat energy through heat exchange or to radiate internal air for cooling of the heat collecting plate 2 with a composite collector 50 and , a hybrid heat pump system comprising a heat pump 60 formed to be operated in connection with the composite collector 50, and a heat storage tank 70 for accumulating heat in connection with the composite collector 50 or the heat pump 60 (100) to be.

As shown in FIG. 1 , the control system of the hybrid heat pump system to which the hybrid heat pump system according to an embodiment of the present invention is controlled includes a driving control unit 200 to control the driving state of the hybrid heat pump system 100 . may be included.

According to the driving control of the driving controller 200 , driving control may be performed in a plurality of driving modes.

By the determination of the shopping mall driving control unit 200, when the amount of insolation supplied to the composite collector is greater than or equal to a preset minimum insolation, greater than or equal to a preset reference insolation, and less than a preset maximum insolation, the 'solar direct thermal storage operation mode' is set and the The operation of the heat pump 60 is OFF, the operation of the transfer fan 30 of the composite collector 50 is OFF, and the supply liquid collected from solar heat is supplied through the header part 4 through the supply pipe 4 to the heat storage tank. It is possible to control the driving so that heat is stored inside the 70 and circulated back to the composite collector 50 .

In addition, by the determination of the driving control unit 200, when the amount of insolation supplied to the composite collector is greater than or equal to a preset minimum insolation and less than a preset reference insolation, the heat pump 60 is set to 'solar hybrid operation mode' is operated, a latent heat chamber 80 filled with a phase change material is added to the tip of the evaporator 64 of the heat pump 60, and the operation of the transfer fan 30 of the composite collector 50 is turned off, and solar heat The supply liquid collected from the evaporator 4 passes through the latent heat chamber 80 through indirect heat exchange through the supply pipe 4 through the header part 4, and is used as an evaporation heat source of the evaporator 64, and again to the composite collector 50. It is circulated, and the condenser 62 of the heat pump 60 is connected to the heat storage tank 70 to control the operation so that heat is stored.

In addition, by the determination of the driving control unit 200, when the amount of solar radiation supplied to the composite collector is less than a preset minimum insolation amount, the heat pump 60 is operated as an 'air-thermal hybrid operation mode', and the heat pump 60 A latent heat chamber 80 filled with a phase change material is added to the tip of the evaporator 64 of the The supply liquid collected from the air heat by ), and the condenser 62 of the heat pump 60 is connected to the heat storage tank 70 and can be driven to control the heat storage.

Finally, by the determination of the driving control unit 200, when the amount of insolation supplied to the composite collector is greater than or equal to a preset minimum insolation, greater than or equal to a preset reference insolation, and greater than or equal to a preset maximum insolation, as a 'heat dissipation operation mode', the The operation of the heat pump 60 is OFF, the operation of the transfer fan 30 of the composite collector 50 is turned on, and the superheated air inside the composite collector 50 is turned on by the operation of the transfer fan 30. Through the flow path 11 , external air is introduced and heat is radiated, and the supply liquid collected from solar heat can be driven and controlled so that it is circulated back to the composite collector 50 by the supply pipe 4 through the header part 4 .

To learn more about each configuration,

The composite collector 50 using solar heat and air heat in combination of the present invention shown in FIGS. 2 to 4 has a case 10, a heat collector 2, a copper pipe 3, a heat insulator 5, and a transfer fan. Consist of 30, the case 10 of the collector 50 is directly attached to a building or the like or installed in a building by a facility such as a pedestal, and the installed collector 50 absorbs the heat of solar energy and requires a heat source. By transferring it to a place, it is used for heating, hot water, etc., and the used heat source is returned to the collector 50 again and circulated in such a way that it is heated by the heat of solar energy.

As shown in FIGS. 1 to 3 , the case 10 has a hollow interior space so that the components of the collector 50 are provided, and the case 10 has a rectangular box shape and has an upper surface penetrating the outside do.

Here, the upper surface of the perforated case 10 is blocked by the glass plate 1, wherein the glass plate 1 is sealed and connected to the case so that rainwater, foreign substances, etc. from the outside do not flow into the case.

And, on one end surface of the case 10, that is, an inlet 12 and an outlet 13 are formed in communication with the internal air flow path 11 to allow air to flow in/out, as shown in FIG. A slot-type damper 20 is installed at the inlet 12 and the outlet 13 to control the inflow and outflow of air. At one side of the damper, air can be introduced into the heat collecting plate 2 of the collector 50. A transfer fan 30 is installed. At this time, by the operation of the fan 30 and the opening and closing of the damper 20 , external air can come into contact with the heat collecting plate 2 , so that air heat energy can be obtained. The obtained air heat energy can be used as an external heat pump heat source to produce hot water.

In addition, a transfer fan 30 capable of transferring air is connected to any one of the inlet 12 or outlet 13 , and external air is supplied to the case 10 by the operation of the transfer fan 30 . At the same time, the high-temperature air heat-exchanged in the case 10 is transferred to a place where a heat source is required. At this time, the conveying fan 30 is directly connected to the inlet 12 or the outlet 13 or is connected by a connecting member (not shown) such as a duct to convey air.

In addition, a filter (not shown) is further installed at the inlet 12 side to filter out polluted air from the outside, and the filter is configured with a case 10 in a structure that is easy to replace at the inlet 12 side. On the other hand, a temperature sensor 40 is installed inside the case 10 to measure the temperature inside the case 10, and when the temperature set through the measurement of the temperature sensor 40 is abnormal, a control unit installed outside (not shown) time), and the control unit opens the damper 20 and operates the transfer fan 30 to discharge the hot air of the case 10 to the outside to control the internal temperature.

In addition to the components of the collector 50, as shown in FIGS. 1 to 2, a heat collecting plate 2 provided on the inside of the case 10 and formed on the lower side of the glass plate 1 to collect solar energy, and the heat collecting plate 2 A plurality of copper pipes (3) integrally attached to the inside to transfer heat by absorbing the heat of solar energy collected from the heat collecting plate (2) into a working fluid transferred therein, and the ends of the plurality of copper pipes (3) The header part 4 is formed in the part and receives heat from the copper pipe 3 and transfers it to the outside, and the heat collecting plate 2 and the copper pipe 3 and the header part 4 are embedded in the lower part of the lower plate body to support the header part 4 . It is composed of a heat insulating material (5).

Here, an air flow path 11 is formed between the heat collecting plate 2 and the heat insulating material 5 to transport air, and the air flow path 11 communicates with the inlet 12 and the outlet 13 of the case 10 . do.

In the air flow path 11 , the air in the air flow path 11 exchanges heat with the heat collecting plate 2 in the absence of solar radiation to obtain energy from the outside air. The heat energy obtained from the heat collecting plate 2 is transferred to the copper pipe 3 and the header 4 attached to the heat collecting plate 2, and heat is transferred to the outside through this.

In addition, the air heat energy is used as a heat source at night by the transfer fan 30 when the damper 20 is opened, or when the collector 50 is overheated, heat is dissipated for cooling.

In addition, the present invention relates to the driving (operation) state of the hybrid heat pump system 100 by the solar and air thermal composite collector including the four operation modes described above according to the driving control of the driving control unit 200 for the composite collector. can control

The hybrid bottom pump system applied with a composite collector of the present invention is a system packaged in connection with a heat pump system by utilizing solar and air heat energy as heat sources, and is a heating and cooling hybrid system that can effectively respond to energy loads such as heating and hot water supply.

In particular, the collector used for the introduction of solar and air heat energy, which is used as a heat source for the evaporator of the heat pump system, can simultaneously or selectively acquire solar heat source energy and air heat source energy with a single configuration of a composite collector. It is to provide a differentiated heat pump system.

The control system of the hybrid heat pump system applied with a composite collector according to an embodiment of the present invention has a large amount of energy obtained by acquiring solar heat and air heat according to the driving operation mode selected according to the driving control of the driving controller 200, and the energy of the collector Acquisition efficiency can be greatly increased.

In the installation part of the system, by using a composite collector, the installation area can be reduced, and installation is easy.

The present invention uses a heat pump system to recover solar and air heat sources, and the heat pump system is composed of a compressor, a condenser, an expander, an evaporator, and the like, like a general heat pump system.

In addition, among the characteristic features of the present invention, there is an evaporator of the heat pump. In winter, since the temperature of the outside air decreases a lot, it becomes difficult to obtain the energy required by the evaporator.

However, the present invention is characterized in that it is possible to utilize solar heat, thereby solving the problem of energy acquisition from the low outdoor temperature in winter to some extent.

In addition, in order to prevent a sudden drop in the temperature of the evaporator in acquiring air heat, PCM (phase change material) material is applied inside the evaporator so that latent heat can be utilized inside the evaporator. The heat pump system can be operated stably.

The drive controllable mode (thermal storage mode) of the hybrid heat pump system according to the control of the drive control unit 200 is largely composed of four modes, so-called solar direct thermal storage mode, solar hybrid operation mode, air thermal hybrid operation mode, heat dissipation operation It is characterized in that each mode operates according to the external conditions.

5 and 6 are embodiments showing the 'solar hybrid operation mode' (MODE 1) according to the control of the control system of the hybrid heat pump system to which the hybrid heat pump system of the present invention is applied,

When the amount of insolation supplied to the composite collector is greater than or equal to a preset minimum insolation and less than a preset reference amount of insolation, the driving control unit 200 determines according to the sequence shown in FIG. 13 to drive and control the hybrid heat pump system in MODE 1. can

MODE 1

In the solar hybrid operation mode, the heat pump 60 is operated, and a latent heat chamber 80 filled with a phase change material is added to the tip of the evaporator 64 of the heat pump 60 .

In winter, since the outside temperature is greatly reduced, it becomes difficult to obtain the energy required by the evaporator of the evaporator 64 of the heat pump 64 .

The solar hybrid operation mode can utilize solar heat to solve the problem of energy acquisition from low outdoor temperature in winter, and also connects the latent heat chamber 80 and the evaporator 64 in series.

It is composed of a heat medium (antifreeze) for heat collecting heat exchange and a PCM (phase change material) pack for energy storage inside the latent heat chamber 80, and a PCM material is applied to reduce the temperature change of the evaporation part, and water is selectively used as the PCM material. will be able to use

Even in the PCM package, to prevent leakage of the PCM material, the packaging is carried out in the form of adding SAP (super absorbent material) to keep the liquid water in the form of a gel.

The operation of the transfer fan 30 of the composite collector 50 is turned off, and the supply liquid collected from solar heat passes through the header part 4 through the supply pipe 4 through the latent heat chamber 80 through indirect heat exchange, It is used as an evaporation heat source of the evaporator 64, and for this reason, an evaporator 64 is installed at the rear end of the latent heat chamber 80, and the energy stored (restored) in the latent heat chamber 80 is utilized to evaporator 64 of the refrigerant. that can be used as

7 and 8 are embodiments showing the 'air-thermal hybrid operation mode' (MODE 2) according to the control of the control system of the hybrid heat pump system to which the hybrid heat pump system of the present invention is applied,

When the amount of insolation supplied to the composite collector is less than a predetermined minimum insolation amount, the driving control unit 200 may drive and control the hybrid heat pump system in MODE 2 by determining according to the sequence shown in FIG. 13 .

MODE 2

The air-thermal hybrid operation mode is characterized in that the heat pump (60) is operated, and a latent heat chamber (80) filled with a phase change material is added to the tip of the evaporator (64) of the heat pump (60).

In using the heat energy obtained from the composite collector 50 as a heat source for the heat pump evaporator 64 (especially in the case of utilization of air heat energy), since the temperature of the outside air decreases a lot in winter, the evaporator 64 also falls below zero.

In this case, the efficiency of the heat pump system 100 is lowered, and the device is overloaded. In order to solve this problem, the latent heat chamber 80 of the present invention uses PCM (phase change material) to supply energy to the evaporator by utilizing the latent heat of the PCM material, so that the temperature change of the evaporator 64 can be significantly reduced. It is provided to improve the efficiency of the heat pump system and increase the durability of the device.

The structure of the latent heat chamber 80 operating on this principle is that the latent heat chamber 80 is a tank in coil type heat exchanger structure, and the inside of the coil circulates in the liquid medium of the composite collector 50, and the inside of the tank is PCM ( phase change material), and provides heat transfer with the circulating medium liquid of the composite collector 50, utilizing the latent heat of the PCM material to supply energy to the evaporator, thereby significantly reducing the temperature change of the evaporator 64. This was done to improve the efficiency of the heat pump system and increase the durability of the device.

In addition, in order to prevent a sudden drop in the temperature of the latent heat chamber 80 even when the supply liquid in the pipe 3 acquires air heat by the operation of the transfer fan 30 from the composite collector 50, the inside of the latent heat chamber 80 A hybrid heat pump system ( 100) is made to operate stably.

To this end, the operation of the transfer fan 30 of the composite collector 50 is turned on, and the supply liquid collected from the air heat by the operation of the transfer fan 30 is supplied through the header part 4 by the supply pipe 4 . It passes through the latent heat chamber 80 through indirect heat exchange, is used as an evaporation heat source of the evaporator 64 , and is circulated to the composite collector 50 again.

9 and 10 are embodiments showing the 'solar direct thermal storage mode' (MODE 3) according to the control of the control system of the hybrid heat pump system applied with the composite collector of the present invention,

When the amount of insolation supplied to the composite collector is greater than or equal to a preset minimum insolation, greater than or equal to a preset reference insolation, and less than a preset maximum insolation, the drive control unit 200 determines according to the sequence shown in FIG. The heat pump system can be driven and controlled.

MODE 3

In the solar direct heat storage operation mode, when the amount of insolation is sufficient, the operation is controlled to directly store solar energy, which is the operation of the heat pump 60 is OFF, and the operation of the transfer fan 30 of the composite collector 50 is OFF, and the supply liquid collected from the solar heat is stored in the heat storage tank 70 by the supply pipe 4 through the header part 4 , and is circulated back to the composite collector 50 .

In addition, when the load is large, the hybrid mode is operated to generate energy in conjunction with a heat pump system using solar and air thermal energy as heat sources, as shown in FIGS. 5 to 9 .

11 and 12 are embodiments showing the 'heat dissipation operation mode' (MODE 4) according to the control of the control system of the hybrid heat pump system to which the composite heat collector of the present invention is applied,

When the amount of insolation supplied to the composite collector is greater than or equal to a predetermined minimum insolation, greater than or equal to a predetermined reference amount of insolation, and greater than or equal to a predetermined maximum insolation, the drive control unit 200 determines according to the sequence shown in FIG. The heat pump system can be driven and controlled.

MODE 4

This is an embodiment to prevent overheating of the heat collecting system through the operation of the fan inside the collector when the amount of insolation in summer is high.

In the heat dissipation operation mode, the operation of the heat pump 60 is OFF, the operation of the transfer fan 30 of the composite collector 50 is turned on, and the combined collector 50 by the operation of the transfer fan 30 The internal superheated air flows through the air flow path 11, and external air is introduced to radiate heat, and the supply liquid collected from the solar heat is circulated back to the composite collector 50 by the supply pipe 4 through the header part 4 will be.

Functional parts such as a compressor 61 , a condenser 62 , an expansion valve 64 , and an evaporator 64 are built in the heat pump 60 , and a plate heat exchanger is installed in the condensing unit to utilize the energy of the load side. It is to provide a hybrid heat pump system in which the heat storage tank 70 is installed to store energy through system operation at a time when energy is sufficient.

In addition, in the control system of the hybrid heat pump system to which the composite heat collector is applied according to an embodiment of the present invention, the driving control unit 200 determines according to the sequence shown in FIG. 14 to control the driving of the hybrid heat pump system 100 . It can also be predicted.

In this case, the equations for calculating each variable used for prediction of the driving control are as follows.

Controller[Mode 1]

Controller[Mode 2]

Controller[Mode 3]

는 집열기(50)의 작동유체 유량을 의미하며,

는 응축 공급관(71)의 작동유체 유량을 의미하며,

는 경사면 일사량을 의미하며,

는 축열조(70)의 설정온도를 의미하며,

는 집열기(50)의 최대 허용온도를 의미하며,

는 증발부 열교환기의 유용도를 의미하며,

는 집열기(50)의 단면적을 의미하며,

는 집열기(50)의 피크 효율을 의미하며,

는 집열기(50)의 열손실 계수는 의미하며,

는 증발기(64)의 내부냉매 대표온도를 의미하며,

는 응축기(62)의 내부냉매 대표온도를 의미하며,

는 집열기(50)의 작동유체 비열을 의미하며,

는 응축 공급관(71)의 작동유체 비열을 의미하며,

는 증발기(64)의 획득 열량을 의미하며,

는 응축기(62)의 획득 열량을 의미하며,

는 히트펌프 소요 전력을 의미하며,
C₁, C₂, C₃, C₄, C₅, C₆, A₁, A₂, A₃, A₄, A₅, A₆, A₇, A₈, A₉들은 히트펌프 성능계수를 의미함.)
이와 같이, 본 발명의 일 실시예에 따른 복합 집열기 적용 하이브리드 히트펌프 시스템의 제어 시스템은 상기 구동 제어부(200)에 의해 상기의 다수 개의 운전모드가 선택되어, 에너지를 생산함에 있어 히트펌프(60)의 일측에 수축열 방식을 적용하기 위해 독립된 버퍼 축열조(70)를 둠으로써 열원과 부하의 불일치 문제를 해소함을 특징으로 한다.
(At this time, T _st,top means the uppermost temperature of the heat storage tank 70,
T _a,in means the outside temperature,
T _e,in means the inlet temperature of the working fluid of the header part and the supply pipe (4),
T _e,out means the working fluid outlet temperature of the header part and the supply pipe (4),
T _c,in means the working fluid inlet temperature of the condensing supply pipe 71,
T ^* _{c, out} means the working fluid outlet temperature of the condensing supply pipe 71,

is the working fluid flow rate of the collector 50,

is the working fluid flow rate of the condensing supply pipe 71,

is the insolation of the slope,

means the set temperature of the heat storage tank (70),

means the maximum allowable temperature of the collector 50,

is the usefulness of the evaporator heat exchanger,

means the cross-sectional area of the collector 50,

means the peak efficiency of the collector 50,

is the heat loss coefficient of the collector 50 means,

means the representative temperature of the internal refrigerant of the evaporator 64,

means the representative temperature of the internal refrigerant of the condenser 62,

means the specific heat of the working fluid of the collector 50,

means the specific heat of the working fluid of the condensing supply pipe 71,

means the amount of heat obtained by the evaporator 64,

means the amount of heat obtained by the condenser 62,

is the power required for the heat pump,
C ₁ , C ₂ , C ₃ , C ₄ , C ₅ , C ₆ , A ₁ , A ₂ , A ₃ , A ₄ , A ₅ , A ₆ , A ₇ , A ₈ , A ₉ are the coefficients of performance of the heat pump. meaning.)
As described above, in the control system of the hybrid heat pump system to which a composite collector is applied according to an embodiment of the present invention, the plurality of operation modes are selected by the driving control unit 200, and the heat pump 60 produces energy. It is characterized in that the problem of mismatch between the heat source and the load is solved by providing an independent buffer heat storage tank 70 in order to apply the heat shrinkage method to one side of the.

The structure of the buffer tank consists of a heat exchanger capable of direct heat exchange with solar heat at the upper part, and one set of pipe connection parts connected to the heat pump at the lower part, and one set of connection parts for utilizing the stored energy. will do

An object of the present invention is to provide a heat pump system using a composite collector capable of simultaneously or selectively acquiring solar thermal energy and air thermal energy, and in connection with the collector, to effectively obtain hot water.

In the prior art, with respect to the technology of utilizing the obtained thermal energy as a heat source for the evaporation unit of the heat pump, the solar heat collecting part and the air heat acquiring part were each composed of separate products (parts), but the present invention utilizes a single composite collector. By lowering the operating temperature of the collector from around 50°C to less than 20°C, the heat collection efficiency is more than 20% higher than that of the existing one. In addition, it is characterized by providing an evaporation chamber structure to which a PCM material is applied so that the latent heat chamber can be utilized in order to solve the problem that the temperature of the evaporation part of the heat pump 60 rapidly decreases according to the decrease of the outdoor temperature in winter.

As described above, in the present invention, specific matters such as specific components and the like and limited embodiment drawings have been described, but these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above one embodiment. No, various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all those with equivalent or equivalent modifications to the claims will be said to belong to the scope of the spirit of the present invention. .

1: glass plate 2: heat collecting plate
3: copper pipe 4: header part, supply pipe
5: insulation material 10: case
11: air passage 12: inlet
13: outlet 20: damper
30: transfer fan 40: temperature sensor
50: collector 60: heat pump
61: compressor 62: condenser
63: expansion valve 64: evaporator
70: heat storage tank 71: condensate supply pipe
80: latent heat chamber 100: hybrid heat pump system
200: drive control unit

Claims (7)

A case, a heat collecting plate provided inside the case and formed on the lower side of the glass plate to collect solar energy, and the heat collecting plate integrally attached to the inside, the heat of solar energy collected from the heat collecting plate is absorbed into the working fluid transferred therein A plurality of copper pipes that transmit heat, a header part formed at the end of the plurality of copper pipes to receive heat from the copper pipe and transfer it to the outside, and the heat collecting plate and the copper pipe and the header part are embedded in the lower part of the lower plate body to support the header part An air flow path is formed between the heat collecting plate and the heat insulating material to transport air, and an inlet and an outlet are respectively formed on one end surface of the case to communicate with the air flow path so that air flows in/out, the inlet and A slot-type damper is installed at the outlet to control the inflow and outflow of air, and external air flows into the case by opening and closing the damper to obtain air heat energy through heat exchange or to radiate internal air for cooling of the heat collecting plate. A composite collector formed to be operated in connection with the composite collector, a heat pump formed to operate, a latent heat chamber filled with a phase change material at the tip of the evaporator of the heat pump, and a heat storage tank connected with the composite collector or heat pump to store heat hybrid heat pump system; and
a driving control unit for controlling a driving mode of the hybrid heat pump system;
It consists of
The driving control unit
Reflecting at least one of a preset minimum insolation amount, a preset reference solar radiation amount, and a preset maximum insolation amount in the current state of the solar radiation supplied to the composite collector, the plurality of hybrid heat pump systems according to the pre-stored driving control sequence Control by selecting any one of the driving modes, or predicting in any one of a plurality of driving modes,
When the amount of insolation supplied to the composite collector is greater than or equal to a preset minimum insolation and less than a preset reference insolation, the drive is controlled in the solar hybrid operation mode, and the amount of heat obtained by the condenser (

), the heat gain of the evaporator (

), the power required for the heat pump (

), the working fluid inlet temperature of the condensing supply pipe (T _c,in ), the working fluid flow rate of the condensing supply pipe (

), the specific heat of the working fluid of the condensing supply pipe (

) using the estimated working fluid outlet temperature of the _condensing supply pipe ^{(T * c} _{, out} ) based on ), if it is less than, the solar hybrid driving mode is controlled to end (no operation),
When the amount of insolation supplied to the composite collector is less than a preset minimum amount of insolation, the drive is controlled in the air heat hybrid operation mode, and the amount of heat obtained by the condenser (

), the heat gain of the evaporator (

), the power required for the heat pump (

), the working fluid inlet temperature of the condensing supply pipe (T _c,in ), the working fluid flow rate of the condensing supply pipe (

), the specific heat of the working fluid of the condensing supply pipe (

) using the estimated working fluid outlet temperature of the _condensing supply pipe ^{(T * c} _{, out} ) based on ), control the air-thermal hybrid operation mode to end (no operation),
When the amount of insolation supplied to the composite collector is greater than or equal to a preset minimum insolation, greater than or equal to a preset reference insolation, and less than a preset maximum insolation, the drive is controlled in the direct solar thermal storage operation mode, and the amount of heat obtained by the evaporator (

), header part, working fluid outlet temperature of the supply pipe (T _e,out ), outside air temperature (Ta _,in ), working fluid flow rate of the collector (

), the specific heat of the working fluid of the collector (

), the cross-sectional area of the collector (

), the peak efficiency of the collector (

), slope insolation (

), the heat loss coefficient of the collector (

) based on the estimated header part and the working fluid inlet temperature of the supply pipe (T _e,in ), the estimated header part and the working fluid inlet temperature of the supply pipe (T _e,in ) is the uppermost temperature of the heat storage tank (T _{st ,top} ), the control system of a hybrid heat pump system applied with a composite heat collector, characterized in that the control of the solar direct thermal storage operation mode is terminated (no operation) when less than.
The method of claim 1,
The driving control unit
When the amount of insolation supplied to the composite collector is greater than or equal to a preset minimum insolation and less than a preset reference insolation, according to the pre-stored driving control sequence,
The heat pump and the latent heat chamber are operated, the operation of the transfer fan of the composite collector is turned off, and the working fluid, which is the supply liquid collected from solar heat, passes through the latent heat chamber through the supply pipe through the header part through indirect heat exchange through indirect heat exchange, It is used as an evaporation heat source, is circulated back to the composite collector, and the condenser of the heat pump is connected to the heat storage tank to control or predict the operation so that heat is stored.
The method of claim 1,
The driving control unit
When the amount of insolation supplied to the composite collector is less than a preset minimum amount of insolation, according to the pre-stored driving control sequence,
The heat pump and the latent heat chamber are operated, the operation of the transfer fan of the composite collector is turned on, and the working fluid, which is the supply liquid collected from the air heat by the operation of the transfer fan, indirectly heats the latent heat chamber through a supply pipe through the header part. Hybrid heat pump system applied with a hybrid heat pump, characterized in that it is passed to the evaporator, used as an evaporation heat source of the evaporator, is circulated back to the composite collector, and the condenser of the heat pump is connected to the heat storage tank to control or predict the operation so that heat is stored 's control system.
The method of claim 1,
The driving control unit
When the amount of insolation supplied to the composite collector is greater than or equal to a preset minimum insolation, greater than or equal to a preset reference insolation, and less than a preset maximum insolation, according to the pre-stored drive control sequence,
The operation of the heat pump is OFF, the operation of the transfer fan of the composite collector is OFF, and the working fluid, which is the supply liquid collected from solar heat, stores heat inside the heat storage tank through the supply pipe through the header part, and circulates to the composite collector again. A control system of a hybrid heat pump system applied to a hybrid heat pump, characterized in that driving control or driving prediction.
The method of claim 1,
The driving control unit
When the amount of insolation supplied to the composite collector is greater than or equal to a preset minimum insolation, greater than or equal to a preset reference insolation, and greater than or equal to a preset maximum insolation, according to the pre-stored driving control sequence,
The operation of the heat pump is OFF, the operation of the conveying fan of the composite collector is ON, and the superheated air inside the composite collector by the operation of the conveying fan is discharged through the air passage, and external air is introduced and radiated from the sun. The control system of a hybrid heat pump system applied with a hybrid heat pump, characterized in that the working fluid, which is the collected supply liquid, is circulated back to the composite collector by the supply pipe through the header part, and the driving control or driving prediction is performed.
The method of claim 1,
The latent heat chamber has a tank in coil type heat exchanger structure, the working fluid of the composite collector circulates inside the coil, and the inside of the tank is filled with a PCM material, providing heat transfer with the working fluid, thereby reducing the latent heat of the PCM material. By supplying energy to the evaporator by utilizing it, it is possible to significantly reduce the temperature change of the evaporator, thereby improving the efficiency of the heat pump system and increasing the durability of the device.

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