JPS5819011B2 - Solar heating equipment for air conditioning - Google Patents

Description

[Detailed description of the invention] The present invention relates to a solar heat supply device for heating and cooling.

Conventionally, there have been many proposals for heat collection devices that utilize solar heat.

However, most of these heat collection devices are not directly connected to the consumer load, and instead store heat in each compartment within the range of the solar radiation heat amount (Japanese Patent Laid-Open No. 119341-1
(Refer to Japanese Patent Application Laid-Open No. 50-132549), therefore, the heat storage tank finishes collecting heat at a temperature corresponding to the amount of solar radiation.

That is, if the capacity of the heat storage tank is small, a high temperature will be generated by collecting heat for a short time, and if the capacity is large, high temperature heat collection cannot be expected and the heat collection efficiency will be poor.

This invention was made in view of the above points, and the hot water falling from the heat collector is divided and stored in a plurality of compartments, and each compartment is appropriately equipped with an absorption refrigerating device for cooling, a hot water storage tank, and a heat exchanger. ,
To provide a solar heat supply device that can be directly connected to desired equipment such as a heating radiator to improve heat collection efficiency, supply hot water to these equipment, and can be used as a heat medium for both hot water supply and cooling and heating. The purpose is to

The solar heat supply device according to the present invention includes a solar heat collector disposed at a high place such as a roof, a heat storage tank disposed below the heat collector and having three compartments, and a water pump from each compartment. The water pumping pipe arranged in the heat collector, and the branch part that descends from the heat collector and branches into the first and first compartments through inlet valves respectively. The heat collector is provided with an upper first differential temperature detector and an upper second differential temperature detector independently of each other, and the first compartment is provided with an upper first differential temperature detector.
A lower first differential temperature detector connected to the detector is provided;
The compartment is equipped with a lower temperature difference detector connected to the upper second detector, and the upper and lower first detectors detect the temperature difference between the heat collector and the first compartment to control the inlet and outlet valves. Then, the upper and lower second detectors detect the difference in temperature between the heat collector and the second compartment,
A solar heat supply device for heating and cooling configured to control an inlet valve and an outlet valve.

Since the present invention is configured as described above, the following effects are achieved.

That is, the first hot water supply pipe with an outlet valve
Since the second compartment is directly connected to the desired equipment and the outlet valve is controlled by the temperature difference, hot water of 78 to 92°C can be collected in the first compartment for a long time, especially during the daytime in summer. This can be used as a heat medium in the absorption refrigeration system of air conditioners and heaters, allowing the operating time of the refrigeration equipment to be extended. Hot water of 50-55℃ can be collected in two compartments and used for hot water supply and bathtubs, and in the early morning or evening in winter, hot water of 43-50℃ can be collected in the first compartment. This can then be used for indoor heating.

Thus, according to the solar heat supply device for heating and cooling of this invention,
Day.

It is possible to obtain separate hot water with different temperatures depending on the amount of water, and actively send these to the desired consumption loads and store heat there. This improves heat collection efficiency and enables efficient heat utilization. It is possible.

Further, by providing the third compartment, when the amount of heat collected is greater than the consumption/side load, the surplus hot water in the first and second compartments can be stored in the third compartment.

Examples of the present invention will be specifically described below.

In the figure, 1 is a solar heat collector placed at a high point such as the roof, and is made of roll bond panels or tube-on-sheets.

A heat storage tank 2 is placed below the heat collector 1, and is usually installed outdoors, such as under the eaves.

The heat storage tank 2 is divided into three parts: an upper compartment of 5001, that is, the first compartment 3, a middle compartment of 7001, that is, the second compartment 4, and a lower compartment of 140(l), that is, the third compartment 5.

Reference numeral 6 denotes a pumping pipe arranged from each compartment 3, 4.5 of the heat storage tank 2 to the heat collector 1, and has a pumping pump 7 and a flow meter 8.

Numerals 9, 10 and 11 are valves provided at the proximal end of the pumping pipe 6 and the branching parts connecting to the respective compartments 3 and 4.5, and 12 are valves that descend from the heat collector 1 and branch out. Part 12
a and 12b are the upper compartment 3 and the lower compartment 4, respectively.
Each branch 12a, 12b has a respective inlet valve 13.14.

Reference numeral 15 denotes a relay tank provided in the downcomer pipe 12 to prevent the water in the collector from freezing, and its capacity is set to accommodate the circulating water retained in the collector 1 during exhaust heat collection such as at night in winter. ing.

34 is an overflow pipe provided upward in the relay tank 15, and extends to a height equal to the upper end of the heat collector 1.

17 is a communication pipe arranged across each compartment 3, 4.5, 18 is a hot water heater discharged from each compartment 3, 4.5 of the heat storage tank 2, and a refrigeration system of an air conditioner/heater not shown in the drawing, a hot water storage tank, and It is a hot water supply pipe that sends to consuming equipment such as heating floor panels, and has outlet valves 19 and 20.35 at the proximal branch connecting to each compartment 3.4.5. It has valves 36, 37 and 38 at the tip branches connecting to the hot water tank and the floor panel, respectively.

Reference numeral 21 denotes a heat medium return pipe arranged from consuming devices such as a refrigerator, a hot water tank, and a floor panel to each compartment 3, 4.5 of the heat storage tank 2, and a branched end connecting to each compartment 3, 4.5. have valves 22, 23, and 24, respectively.

25 is a heat exchanger provided in the middle compartment 4, and is made of a coiled steel pipe.

Reference numeral 26 denotes a thermostat for switching heat medium supply installed inside the top wall of the upper compartment 3, and is connected to the air conditioning system.

Reference numerals 27 and 28 denote upper first and second temperature difference detectors independently provided at the upper end of the heat collector 1, and the lower first temperature difference detector 29 connected to the upper first detector 27 is connected to the upper compartment. A lower second differential temperature detector 30 is provided in the middle compartment 4 and is connected to the upper second detector 28 .

The upper and lower first detectors 27 and 29 detect that the temperature difference between the heat collector 1 and the upper compartment 3 is within the first set range, and open the inlet valve 13 and the outlet valve 19, and also open the upper and lower first detectors 27 and 29. The second detector 28.degree. 30 detects that the temperature difference between the heat collector 1 and the middle compartment 4 is within a second setting range different from the first setting range, and opens the inlet valve 14 and the outlet valve 2.
0 is opened.

Reference numerals 31, 32, and 33 designate thermometers provided at respective connection positions of the branch portions of the pumping pipes 6 in the respective compartments 3, 4.5.

In addition, the pump 7 and the temperature difference detectors 29 and 30 are each connected to the timer T, the valves 14 and 20 are connected to the timer T through the switch S1, and the valve 19 and the air conditioner are connected to the timer T through the switch S2. There is.

By setting the time on the timer T, each valve is automatically controlled to open and close.

The third compartment 5 is used when the amount of heat collected is greater than the load on the consumption side, and by manual operation of the valve 11, surplus hot water from the first and second compartments is passed through the first communication pipe 17 to the second compartment. It is stored in three compartments 5.

Then, by manual operation of the outlet valve 35, this hot water is sent to the consuming equipment such as the floor panel at an appropriate time.

In the solar heat supply device having the above configuration, first, during the daytime in summer, for example from 9:45 am to 3:30 pm, the inlet valve 13 and the outlet valve 19 is opened, and hot water with a temperature of 78 to 92°C, with an average temperature of 82 to 88°C, is collected in the upper compartment 3, and this is fed to the absorption refrigeration device of the air conditioner and heater, and is used as a heat medium.

It is said that

In this way, cold water with a temperature of 8 to 9° C. is obtained in the refrigeration device.

This cold water is passed through an indoor fan coil to cool the room.

Also, in the early morning or evening in summer, for example from 6:45 a.m.
9:45am and 3:45pm-5:45pm cc.
The inlet valve 14 and the outlet valve 20 are opened by the timer T and the second upper and lower temperature difference detectors 28 and 30,
Hot water with a temperature of 35 to 62°C, on average about 50 to 55°C, is collected in the middle compartment 4, and is sent to a hot water supply tank and used for hot water supply.

Also, with this hot water: hot water is obtained within the heat exchanger 25, and this is sent to a bathtub or the like.

As a general rule, lower compartment 5 is not used during the summer.

In winter, which is the opposite of summer, in the early morning and evening, the inlet valve 13 and the outlet valve 19 are opened by the timer T and the first upper and lower temperature difference detectors 27 and 29, and air flows through the upper compartment 3 and the communication pipe 17. Hot water with a temperature of about 43 to 50°C is collected in each of the lower compartments 5, and this is sent to the indoor heating radiator and floor panel and used as a heat medium.
The room is heated.

Also, during the day, there is a timer T and a second upper and lower temperature difference detector 28.
30, the inlet valve 14 and the outlet valve 20 are opened, and hot water with a temperature of about 50 to 55°C is collected in the middle compartment 4, and this is supplied to the hot water storage tank and bathtub for hot water supply as in the summer. used.

In principle, the conditions in spring and autumn are the same as in winter, but
In preparation for rainy days, hot water is stored in all the upper, middle and lower compartments 3,4°5.

[Brief explanation of drawings]

The drawing is a system diagram showing an embodiment of the present invention. 1... Heat collector, 2... Heat storage tank, 3...
... Upper compartment/chamber (first compartment), 4...
Middle compartment (second compartment), 5...lower compartment (third compartment), 6...lifting pipe, 12...
... Downpipe, 12a, 12b... Branch, 13
．． 14... Inlet valve, 15... Relay tank, 18... Hot water supply pipe, 19.20...
... Outlet valve, 27... Upper first differential temperature detector, 28... Upper second differential temperature detector, 29...
...Lower first differential temperature detector, 30...Lower second
Differential temperature detector.

Claims (1)

[Claims] 1 A solar heat collector 1 arranged at a high place such as a roof, a heat storage tank 2 arranged below the heat collector 1 and having three compartments 3° 4.5, and each compartment 3, 4.5 A lift pipe 6 is arranged from the collector 1 to the collector 1 via a pump 7, and branches 12a and 12b descend from the collector 1 and branch into the first and second pipes via inlet valves 13 and 14, respectively. 2 compartment room 3
, 4 and a downcomer 12 leading to the first and second compartments 3, 4.
The heat collector 1 is equipped with a hot water supply pipe 18 which is connected to a desired device via an outlet valve 19, 20, and an upper first differential temperature detector 27 and an upper second differential temperature detector 28 are connected to each other in the heat collector 1. The first compartment 3 is provided with a lower first differential temperature detector 29 connected to the first upper detector 27, and the second compartment 4 is provided with a lower temperature difference detector 29 connected to the second upper detector 28. A temperature difference detector 30 is provided, and the upper and lower first detectors 27 and 29 are connected to the heat collector 1 and the first detector.
The temperature difference between the compartment 3 is detected and the inlet valve 13 and the outlet valve 19 are controlled. Valve 14
and an outlet valve 20 .