KR101309555B1 - Solar hot water system with cooling - Google Patents

Abstract

The present invention relates to a solar cooling combined use hot water system, the present invention, a collector for collecting solar heat; A controller for controlling the operation of two circulation pumps installed in the collector circulation pipe and the storage tank circulation pipe by a difference between the circulation medium discharge temperature of the collector and the circulation medium discharge temperature of the heat storage tank; A boiler for communicating with the hot water drawing pipe communicating with the heat storage tank for each generation branch pipe that is branched by generation to supply hot water to the load side to supply hot water to the load side; And a cooling unit communicating with the generation branch pipes of some generations that require cooling among the generation branch pipes communicating with the boiler to produce cold water using a driving heat source stored in the heat storage tank for cooling.
According to the present invention, by installing the heat storage tank installed in the basement of the existing building to be located in the elevator tower on the roof of the building, it is possible to supply the hot water of the heat storage tank by gravity, and also to prevent the freezing of the pipe, and to minimize the length of the connecting pipe In addition, the heat collected by solar heat is used to provide hot water loads to all households, and in some generations, it is possible to provide cooling loads with surplus heat in summer.

Description

Solar hot water system with cooling {Solar hot water system with cooling}

The present invention relates to a solar cooling combined hot water supply system, and more particularly to a solar cooling combined hot water supply system that provides both hot water load and cooling load for each generation of the building by using heat collected by solar heat.

In recent years, systems that generate heat or collect heat using solar heat and supply it to hot water supply and heating parts according to the necessity of green industry while minimizing environmental load as alternative energy for limited petroleum resources are increasing. It is a trend.

1 is a schematic configuration diagram of a solar hot water system according to the prior art. Referring to FIG. 1, the solar hot water system 10 is configured to heat the water for hot water through the heat exchanger 13 through a heat medium (antifreeze) circulating in the collector 11.

That is, the solar hot water system 10 is equipped with a collector inlet pipe and a discharge pipe (11a, 11b) to absorb the solar heat to heat the water circulated by the circulation pump 15 and the collector 11 is installed outdoors The heat exchanger 13 is provided to condense the collector inlet pipe and the outlet pipe 11a and 11b into the heat exchanger, and the heat storage inlet pipe 17a and the heat storage drawer inside the heat exchanger 13. Each end of the pipe (17b) is in communication with the inner side, the heat storage pump 17c installed in the middle of the heat storage draw-out pipe (17b) to be circulated through the heat exchanger (13) It consists of a heat storage tank (17) which is provided to be able to supply the heat exchanged hot water through the hot water inlet pipe and the withdrawal pipe (17d, 17e).

The solar hot water supply system, which is usually applied to apartments, has high heat collection efficiency in summer, and the amount of hot water used decreases, causing excess heat to deteriorate the economics and causing heat collector damage due to overheating.

In addition, in the conventional solar hot water system 10, since the heat storage tank 17 is installed mostly in the basement of the building, as the length of the heat storage inlet pipe 17a, the heat storage draw pipe 17b, and the associated pipe becomes longer, construction cost and construction are increased. There was a problem in that a long time and manpower consumption, and the freezing of the long heat storage lead-out pipe (17a) and the heat storage draw-out pipe (17b) and the accompanying pipes in the winter season when the temperature continues to drop below freezing.

An object of the present invention is to solve the problems of the prior art as described above, by installing a heat storage tank installed in the basement of the existing building so as to be located in the elevator tower on the roof of the building can supply hot water of the heat storage tank by gravity while freezing the pipe It can also be prevented, the length of connecting pipe can be minimized, the heat collected by solar heat is used to provide both the hot water load to some households and the cooling load by using surplus heat in summer, and the hot water load to most households. It is to provide economical solar cooling and hot water supply system that can supply only.

According to a feature of the present invention for achieving the object as described above, the present invention, a collector for collecting solar heat; A heat storage tank storing solar heat collected by the heat collector; A controller for controlling the operation of two circulation pumps installed in the collector circulation pipe and the storage tank circulation pipe by a difference between the circulation medium discharge temperature of the collector and the circulation medium discharge temperature of the heat storage tank; A boiler for communicating with the hot water drawing pipe communicating with the heat storage tank for each generation branch pipe that is branched by generation to supply hot water to the load side to supply hot water to the load side; And an air conditioner connected to the generation branch pipe of the upper generation requiring cooling among the generation branch pipes communicating with the boiler to produce cold water using a driving heat source stored in the heat storage tank for cooling. Is achieved through.

In addition, in the winter or the middle period, the internal hot water of the heat storage tank is supplied to the boilers of the previous generation for hot water hot water supply, and in the summer, the surplus heat is installed in some households while the internal hot water of the heat storage tank is supplied to the boilers of the previous generation for hot water hot water supply. The air conditioner may be supplied as a driving heat source.

In addition, the heat storage tank may be installed in an elevator tower on the roof of a building adjacent to the collector.

According to the present invention, by installing the heat storage tank installed in the basement of the existing building to be located in the elevator tower on the roof of the building, it is possible to supply the hot water of the heat storage tank by gravity, and also to prevent the freezing of the pipe, and to minimize the length of the connecting pipe In addition, the heat collected by solar heat is used to provide hot water loads to all households year-round, and to provide cooling loads with surplus heat in summer to some households.

1 is a schematic configuration diagram of a solar hot water system according to the prior art.
2 is a schematic configuration diagram of a solar heating / cooling hot water supply system according to a first embodiment of the present invention.
3 is a schematic configuration diagram of a solar cooling and hot water supply system according to a second embodiment of the present invention.

The terms or words used in the present specification and claims are intended to mean that the inventive concept of the present invention is in accordance with the technical idea of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to explain its invention in the best way Should be interpreted as a concept.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless otherwise stated.

Hereinafter, with reference to the drawings will be described in detail the configuration of an embodiment of the solar heating and cooling hot water system according to the present invention.

< Example  1>

2 is a schematic diagram of a solar cooling system for hot water supply system according to a first embodiment of the present invention.

According to these drawings, the solar cooling and hot water supply system 100 of this embodiment includes a heat collector 110, a heat exchanger 120, a heat storage tank 130, a boiler 140, a cooler 150 and a controller (C). do.

Furthermore, the solar cooling and hot water supply system 100 of the present invention supplies the internal hot water of the heat storage tank 130 for the hot water hot water supply to all generations of the building (hereinafter referred to as an 'apartment') in the winter or the middle period, and the summer While supplying the internal hot water of the heat storage tank 130 for hot water hot water supply to the previous generation, it is characterized in that to supply the excess heat of the heat storage tank 130 to the cooler 150 as a driving heat source.

In particular, the boiler 140 is installed in all households, such as apartments, and the air conditioner 150 is installed only in a few households that require cooling, and hot water can be supplied by gravity in the process of supplying hot water to the lower generation, while supplying hot water. This prevents heat loss from occurring.

The collector 110 serves to heat the heat medium (antifreeze), which is a circulating medium that is circulated and grafted with a flat plate, through solar heat, and is installed outdoors with a large amount of heat collected, such as a roof or a roof of a building. In the embodiment, it has a closed structure while being installed in close contact with the gable roof of the apartment.

At this time, the collector 110, when passing through the portion located in the collector 110 while the heat medium flows, the heat collector circulation pipe 112 and both sides to absorb the solar heat collected by the heat collector 110 and to transfer to the heat medium. This communication is performed, and the collector inlet pipe 112a and the left side communicate with each other, and the collector drawer pipe 112b and the right side communicate with each other. At this time, although not shown in the figure, the inner end of the collector 110 side of the collector circulation pipe 112 is widely distributed inside the collector 110 so that heat collected by the collector 110 can be transferred to the heat medium as much as possible. It is preferable.

The collector inlet pipe 112a is provided with a temperature sensor S1 for measuring the heat medium discharge temperature T1 through the collector inlet pipe 112a and the collector 110, and the temperature sensor S1 is a controller C. Is electrically connected to the And the collector draw-out pipe (112b) is forced to circulate the heat medium through the circulation pump (P1) installed on the way to enable a smooth circulation of the heat medium.

The heat storage tank inlet pipe 132a is provided with a temperature sensor S2 for measuring the heat medium discharge temperature T2 through the heat storage tank inlet pipe 132a and the heat storage tank 130, and the temperature sensor S2 is a controller C. Is electrically connected). And the heat storage tank withdrawal pipe (132b) is forced to circulate the circulation water through the circulation pump (P2) installed on the way to enable a smooth circulation of water.

That is, the circulating pumps P1 and P2 operate simultaneously with the control command of the controller C. When the temperature difference between T1 and T2 differs by more than the set upper limit, the circulating pumps P1 and P2 operate.

The heat exchanger 120 is provided such that heat exchange is performed by conduiting neighboring ends of the heat storage circulation pipe 112 and the heat storage tank circulation pipe 132 communicating with the heat storage tank 130 to the inside.

The heat storage tank 130 serves to accumulate the solar heat collected by the heat collector 110 through indirect heat exchange, and the stored heat is stored in the stored water, and is coated with a heat insulating material so that heat is not released to the outside. In the example illustrated as being installed in the elevator tower on the roof of the building (apartment) close to the collector (110). Thus, when the heat storage tank 130 is installed in the elevator tower on the roof of the apartment, there is an advantage that the construction cost and time, etc. are reduced by minimizing the length of the attached pipe. The controller C, the circulation pumps P1, P2, and P3 and the heat exchanger 120 may be disposed at a position close to the heat storage tank 130 to minimize heat loss.

Further, the heat storage tank 130 accommodates the water introduced through the heat storage tank inlet pipe, that is, the water used for living (living water, tap water), and the received living water is discharged through the heat storage tank withdrawal pipe 134b.

The heat storage tank 130 allows forced circulation through the circulation pump P2 installed in the middle of the heat storage tank withdrawal pipe 132b so that the hot water exchanged in the heat exchanger 120 is withdrawn through the hot water withdrawal pipe 132a and the hot water. To be introduced through the inlet pipe 132b.

The heat storage tank 130 sends the hot water supply to each household through gravity through the hot water withdrawal pipe 134a such as the longitudinal direction and the household branch pipe 136 such as the transverse direction, but through the sisu pipe as far as it exits to the load side. Is filled.

The boiler 140 is connected to the gas boiler, and installed in the hot water withdrawal pipe 134a communicating with the heat storage tank 130 so as to communicate with the inlet and withdrawal pipes for each of the generation branch pipes 136 branched by each generation of the apartment. It serves to hot water the circulation medium of the heat storage tank 130.

More specifically, the boiler 140 is operated when the temperature T3 of the heat storage tank 130 is lower than or equal to the set temperature Td, and when the boiler 140 is higher than or equal to the set temperature Td, the hot water of the heat storage tank 130 is stopped. Supplying directly to the load side without passing through 140). At this time, since the boiler 140 requires hot water hot water during the summer, middle and winter seasons, it is preferable to install the boiler 140 in all generations.

Here, the set temperature (Td), which is a reference for determining whether the boiler 140 is operated, is in the range of 35 ° C to 45 ° C, preferably 40 ° C. As a result, the boiler 140 is operated when the temperature of the heat storage tank 130 is 40 ° C. or lower, and when the temperature of the heat storage tank 130 is 40 ° C. or higher, hot water is supplied to the load side without passing through the boiler 140. .

On the other hand, the generation branch pipe 136 and the inlet piping of the boiler 140 so that the hot water of the heat storage tank 130 is supplied to the cooler 150 or the hot water supply pipe 136a for the hot water supply installed in some households. The valve V1 is installed at the intersection point.

Here, the valve (V1) is a three-way valve (3-way valve) to draw hot water from one side, and to selectively adjust the valve at the starting point to both sides at the time of withdrawal to select only one of the two, the controller (C) The connection or disconnection of the pipe is controlled. That is, the generation branch pipe 136 and the boiler 140 communicate with each other through the control of the valve V1 by the controller C, or the generation branch pipe 136 and the hot water supply pipe 136a.

And the boiler 140 is in communication with the inlet pipe to the opening and closing control through the valve (V1) to the generation branch pipe 136, the withdrawal pipe is in communication with the generation branch pipe 136, so that the hot water heated for hot water It is withdrawn.

The air conditioner 150 is connected to the generation branch pipe 136 of the generation requiring cooling among the generation branch pipe 136 communicated with the boiler 140 by using hot water which is a driving heat source stored in the heat storage tank 130 for cooling. It will produce cold water.

At this time, the air conditioner 150 is installed in a utility room or balcony of a part of apartments close to the location of the heat storage tank 130 to minimize heat loss, and the generation branch pipe 136 connected to a generation requiring hot water supply and cooling. A pressurized water pump (P3) can be used if necessary for smooth hot water supply.

In particular, when the air conditioner 150 is installed, the hot water supply pipe 136b in the middle (between the boiler take-out pipe and the air conditioner) of the generation branch pipe 136 for communicating the air conditioner 150 and the hot water outlet pipe 134a. The branched, three-way valve may be provided at the starting point of the branch valve (V2) that selectively controls the opening and closing so that the hot water of the heat storage tank 130 can be supplied to the cooler 150 or the hot water supply pipe (136b). . When the air conditioner 150 is not installed, the generation branch pipe 136 is in direct communication with the hot water supply pipe 136a.

Here, the air conditioner 150 is a dehumidification cooler that can operate with hot water at about 60 ° C., using hot water introduced through the generation branch pipe 136 branched from the hot water withdrawal pipe 134a of the heat storage tank 130. As the moisture is removed, the latent heat load is treated, and water is evaporated in the dehumidified air to lower the outside air temperature to cool.

Here, the air conditioner 160 is a regenerative evaporative cooler (REC), for example, is a kind of indirect evaporative cooler that cools by indirect heat exchange, and supplies air to a room using a part of the cooled air. Refers to the method of indirect evaporative cooling. In more detail, indirect evaporation can be performed by using water as a coolant without using a refrigerant or the like to indirectly evaporate the air supplied to the room, not to emit pollutants in the production and use processes, as well as indoor and outdoor circulation devices. To transport outdoor air indoors through humidity control, dust removal, filtration and cooling.

The principle of operation of the regenerative evaporative cooler is not shown in the drawing, but the intake air passes through the gun channel to lower the temperature, and some of the lower temperature low temperature air is exhausted so that the wet channel installed in parallel with the gun channel is connected to the flow direction of the main air. Go in reverse. The air passing through the wet channel cools down as the water on the wet channel surface evaporates, taking sensible heat from the dry channel and reducing the temperature of the main air. As the water sprayed on the wet channel through the water supply evaporates, the temperature of the wet channel air is lowered by the latent heat of evaporation, thereby cooling the temperature of the air passing through the dry channel as the sensible heat of the dry channel is taken away. In theory, cooling to the dew point temperature of the inlet air is possible.

The controller C receives signals output from the temperature sensors S1 and S2 and controls the operation of the circulation pumps P1 and P2 in accordance with the signals.

That is, the controller C controls the circulation pump P1 to operate in order to maintain the temperature of the collector circulation pipe 112 when the temperature detected from the temperature sensor S1 is equal to or less than the reference temperature for a set time, and then sets the time. If the temperature detected during the temperature sensor (S2) is less than the reference temperature, the circulation pump (P2) is controlled to maintain the temperature of the heat storage tank circulation pipe 132. The controller C also outputs a signal indicating whether the boiler 140 operates according to the temperature sensing while sensing the temperature in the heat storage tank 130, and controls whether the valves V1 and V2 are driven.

Therefore, the operation sequence of the solar cooling system for hot water according to the present embodiment is as follows.

First, the collector 110 in this embodiment has a closed structure and is installed in close contact with the gable roof of the apartment, the boiler 140 is installed in all generations, and the air conditioner 150 is an apartment in the generation that requires cooling The heat storage tank 130 is installed in the elevator tower on the roof of the apartment, and the controller C, the circulation pumps P1, P2, and P3 and the heat exchanger 120 are located in the vicinity of the heat storage tank 130. Etc. are arranged.

Next, the solar heat collected by the collector 110 is transferred to the heat medium, and the heat medium flows along the heat storage tank circulation pipe 132 while the heat medium flows along the heat collector circulation pipe 112. The water for hot water is stored in the heat storage tank 130 through heat exchange.

At this time, the collector circulation pipe 112 and the heat storage tank circulation pipe 132 is forced to circulate the water for the heat medium and hot water by the circulation pump (P1, P2) the operation is controlled through the controller (C). In addition, when the temperature of the heat storage tank 130 is detected to be 40 ° C. or lower through the temperature sensor S3 installed inside the heat storage tank, the controller C outputs a signal to operate the boiler 140, and the temperature of the heat storage tank 130 is maintained. Is 40 ° C. or more, the controller C controls the operation of the valve V2 such that the hot water of the heat storage tank 130 is directly supplied to the load side through the load side supply pipe without passing through the boiler 140. .

On the other hand, since hot water is used for hot water hot water supply in the summer or winter as well as in the middle or mid-season, the boiler 140 is installed in all generations, but since cooling is used only in the summer, the heat storage tank 130 is installed in the elevator tower on the roof of the apartment, Considering the minimization, it is preferable that the air conditioner 150 is mainly installed only in the upper floor of the apartment.

As a result, in the winter or the middle period, the internal hot water of the heat storage tank 130 is supplied to the hot water hot water supply or the boiler 140 to all households through gravity through the generation branch pipe 136 branched from the hot water withdrawal pipe 134a. In the summer, the excess heat of the heat storage tank 130 is supplied to the air conditioner 150 as a driving heat source for cooling while supplying the internal hot water of the heat storage tank 130 for hot water hot water supply or the boiler 140 to all generations. .

Furthermore, the air conditioner 160 processes latent heat load by removing moisture from the air by using hot water stored in the heat storage tank 130 through the regenerative evaporative cooler applied thereto, and lowers the outside temperature by evaporating water in the dehumidified air. It cools and supplies it indoors.

< Example  2>

3 is a schematic diagram of a solar heating / cooling hot water supply system according to a second embodiment of the present invention.

According to these drawings, the solar heating and cooling hot water system 200 of the present invention includes a heat collector 210, a heat storage tank 230, a boiler 240, a cooler 250 and a controller (C), a separate heat exchanger Without the matter of adopting an open structure that directly transfers the heat collected from the collector 210 to the heat storage tank 230 is different from the first embodiment.

That is, the solar cooling and hot water supply system 200 according to the present embodiment communicates the heat collector 210 and the heat storage tank 230 through a pipe without a heat exchanger, and the boiler 240, the air conditioner 250, and the controller C are connected to each other. Since it has the same structure and function as that of the first embodiment, detailed description thereof will be omitted.

The collector 210 communicates with the heat storage tank 230 through the collector circulation pipe 212 and is located inside the collector 210 to serve as a passage through which water flows. The collector drawer pipe 212a and the collector drawer pipe are arranged in the collector 210. It is composed of 212b, and when the water passes through the portion located in the collector 210, serves to absorb and transfer the solar heat collected by the collector 110 to the water.

At this time, the inner end of the collector 210 side of the collector circulation pipe 212 is preferably distributed widely inside the collector 210 so that the heat collected by the collector 210 can be transferred to the water which is the working medium as much as possible. .

In addition, a temperature sensor S1 measuring water temperature through the collector inlet pipe 212a is installed in the collector inlet pipe 212a, and the temperature sensor S1 is electrically connected to the controller C.

That is, the circulation pump P1 operates under the control command of the controller C, and the water temperature in the collector inlet pipe 212a of the water contained in the collector 210 and the collector circulation pipe 212 is the collector outlet pipe 212b. If the water temperature is lower than the set value, the water is forced to circulate.

Here, 234a is a hot water draw pipe, 234b is a hot water draw pipe, 236 is a generation branch pipe, 236a, 236b is a hot water supply pipe, V1, V2 is a valve.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the equivalents of the appended claims, as well as the appended claims.

100: solar heat cooling and combined use hot water supply system according to the first embodiment
110: collector 112: collector circulation pipe
120: heat exchanger 130: heat storage tank
132: heat storage tank circulation pipe 134a: hot water withdrawal pipe
134b: hot water inlet pipe 136: household branch pipe
136a, 136b: hot water supply pipe 140: boiler
150: air conditioner C: controller
V1, V2: valve
200: solar thermal cooling and hot water supply system according to a second embodiment
210: collector 212: collector circulation piping
230: heat storage tank 234a: hot water withdrawal pipe
234b: hot water inlet pipe 236: household branch pipe
236a, 236b: hot water supply pipe 240: boiler
250: air conditioner C: controller
V1, V2: valve

Claims (3)

A collector that collects solar heat;
A heat storage tank storing solar heat collected by the heat collector;
A controller for controlling the operation of two circulation pumps installed in the collector circulation pipe and the storage tank circulation pipe by a difference between the circulation medium discharge temperature of the collector and the circulation medium discharge temperature of the heat storage tank;
A boiler for communicating with the hot water drawing pipe communicating with the heat storage tank for each generation branch pipe that is branched by generation to supply hot water to the load side to supply hot water to the load side; And
It includes a cooler for producing cold water by using hot water, which is a drive heat source stored in the heat storage tank is connected to the generation branch pipe of the upper generation that requires cooling of the generation branch pipe connected to the boiler for cooling,
The heat storage tank is installed in an elevator tower on a building roof adjacent to the collector to connect hot water supply to each household under the heat storage tank. It is sent through the hot water withdrawal pipe in the longitudinal direction, the generation branch pipe in the transverse direction branched to the hot water withdrawal pipe,
The air conditioner is a regenerative evaporative cooler (REC) that indirectly evaporates and cools the air supplied to the room by using a portion of the cooled air using water as a coolant, through the generation branch pipe branched from the heat storage tank. It is composed of a wet channel and a dry channel so as to process latent heat load by removing the moisture in the air by using the introduced hot water, and to evaporate the water in the dehumidified air to lower the outside air temperature to cool it. The passing air is cooled while the water on the surface of the wet channel is evaporated, and takes the sensible heat from the dry channel to reduce the temperature of the main air, while the cooler is installed only in some generations requiring cooling to supply hot water to the lower generation. It is possible to supply hot water by gravity to prevent heat loss generated during hot water supply during the process.
In the winter or the middle period, the internal hot water of the heat storage tank is supplied to the boiler of all generations by using gravity through the generation branch pipe branched from the hot water withdrawal pipe, and in the summer, the internal hot water of the heat storage tank is supplied to the previous generation. A solar cooling and hot water supply system that supplies surplus heat as a driving heat source to the cooler installed in some generations while supplying a hot water hot water supply to a boiler. delete delete

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