JP7317179B1 - Reuse system and method - Google Patents

Abstract

A recycling system and method that contributes at least in part to saving energy consumed. SOLUTION: A reuse system according to one embodiment includes an outdoor unit connected to a refrigerator or a freezer, a first heat exchanger that transfers heat of air taken in from the outside to a first refrigerant, a compressor for compressing the first refrigerant supplied from the first heat exchanger; and a second for transferring heat of the first refrigerant supplied from the compressor to water supplied to the tank. a heat exchanger, an expansion valve that decompresses the first refrigerant supplied from the second heat exchanger and supplies the refrigerant to the first heat exchanger, and the first refrigerant supplied from the expansion valve a first heat exchange device that discharges air cooled by a refrigerant to the outside and that includes an exhaust pipe arranged to face the outdoor unit. [Selection diagram] Fig. 1

Description

The technology disclosed in this application relates to a system for reusing exhausted heat.

BACKGROUND ART Conventionally, a system disclosed in Japanese Patent Application Laid-Open No. 2015-96797 (Patent Document 1) is known as a system that reuses exhausted heat. The system disclosed in this document has a heat exchange device used for boiling water and a duct for conveying the cold air discharged from the heat exchange device indoors. Such a system is described as contributing to energy conservation by taking into the room the cool air that would otherwise be wasted when boiling water.

JP 2015-96797 A

Nowadays, there is a need for further measures to save the energy consumed.
Accordingly, the technology disclosed in this application provides a recycling system and method that contributes, at least in part, to saving energy consumed.

A reuse system according to one aspect includes "an outdoor unit connected to a refrigerator or a freezer, a first heat exchanger that transfers the heat of air taken in from the outside to a first refrigerant, and the first heat a compressor for compressing the first refrigerant supplied from an exchanger; a second heat exchanger for transferring heat of the first refrigerant supplied from the compressor to water supplied to a tank; an expansion valve that decompresses the first refrigerant supplied from the second heat exchanger and supplies the first refrigerant to the first heat exchanger; and an expansion valve that is cooled by the first refrigerant supplied from the expansion valve. and a first heat exchange device that discharges air to the outside and includes an exhaust pipe arranged to face the outdoor unit.

A method according to one aspect comprises: "a first heat exchanger that transfers heat of air taken in from the outside to a first refrigerant; and compressing the first refrigerant supplied from the first heat exchanger. a second heat exchanger for transferring heat of the first refrigerant supplied from the compressor to water supplied to the tank; and the second refrigerant supplied from the second heat exchanger. an expansion valve for depressurizing one refrigerant and supplying it to the first heat exchanger; and an exhaust pipe for discharging to the outside the air cooled by the first refrigerant supplied from the expansion valve. preparing one heat exchange device, wherein the first heat exchange device directs the exhaust air toward an outdoor unit connected to a refrigerator or a freezer provided facing the first heat exchange device; and exhausting said cooled air from the tube.

FIG. 1 is a plan view schematically showing an example of the configuration of a reuse system 1 according to one embodiment. FIG. 2 is a side view schematically showing the configuration of the reuse system 1 shown in FIG. 1 as viewed from the arrow A shown in the figure. FIG. 3 is a block diagram schematically showing a configuration of part of the reuse system 1 shown in FIG. 1 including the first heat exchange device 100. As shown in FIG. FIG. 4 is a diagram schematically showing an example of the configuration of the second heat exchange device 200 used in the reuse system 1 shown in FIG. 1. As shown in FIG. FIG. 5 is a flowchart showing an example of operations performed by the reuse system 1 shown in FIG.

Various embodiments of the present invention will now be described with reference to the accompanying drawings. In addition, the same reference numerals are attached to common components in the drawings. Also, it should be noted that components depicted in one drawing may be omitted in another drawing for convenience of explanation. Furthermore, it should be noted that the attached drawings are not necessarily drawn to scale.

1. Overview The recycling system disclosed in this application can include at least one of a first heat exchange device and a second heat exchange device and an outdoor unit connected to a refrigerator or freezer.

In such a recycling system, the first heat exchange device transfers heat from the air taken in from the outside to the water supplied to the tank through the first refrigerant, thereby cooling the water. The air cooled by the first refrigerant can be discharged (supplied) toward the outdoor unit. Thereby, the first heat exchange device can at least partially suppress the energy consumed by the outdoor unit by transferring the heat energy generated in the first heat exchange device to the outdoor unit.

Additionally or alternatively, a second heat exchange device transfers heat of a second refrigerant used by the outdoor unit to water supplied to the tank via a third refrigerant. can do. Thereby, the second heat exchange device transfers the heat energy generated in the outdoor unit to the water supplied to the tank, thereby reducing the energy consumed for heating the water supplied to the tank. can be at least partially suppressed.

When the reuse system uses both the first heat exchange device and the second heat exchange device, the first heat exchange device transfers the heat energy generated in the first heat exchange device to the outdoor unit. can be transmitted to In addition to this, a second heat exchange device can transfer thermal energy generated in the outdoor unit to the water supplied to the tank. Thereby, a first system that cools air (including an outdoor unit and a freezer or refrigerator) and a first system that heats water (including a first heat exchange device that heats the water supplied to the tank) The two systems can mutually improve the operating efficiency by mutually utilizing thermal energy.

2. Configuration Example of Reuse System According to One Embodiment FIG. 1 is a plan view schematically showing an example of the configuration of a reuse system according to one embodiment. FIG. 2 is a side view schematically showing the configuration of the reuse system shown in FIG. 1 as viewed from the arrow A shown in the same figure.

As shown in FIGS. 1 and 2, the reuse system 1 can include an outdoor unit 10, a first heat exchange device 100, a hot water storage unit 20, and a second heat exchange device 200.

(1) Outdoor unit 10
The outdoor unit 10 is connected to a freezer or refrigerator (not shown). The outdoor unit 10 can perform the following operations, for example, in cooperation with a freezer or refrigerator (hereinafter sometimes referred to as "freezer or the like") not shown.

In the first step, the freezer or the like uses an evaporator (not shown) to evaporate a low-temperature, low-pressure refrigerant (liquid), thereby cooling the interior (not shown) with the heat of vaporization. A freezer or the like can supply a low-temperature, low-pressure refrigerant (gas) to the outdoor unit 10 .

In the second step, the outdoor unit 10 uses a compressor (not shown) to compress a low-temperature, low-pressure refrigerant (gas) to supply a high-temperature, high-pressure refrigerant (gas) to a heat exchanger (not shown). can do.

In the third step, the outdoor unit 10 can use a heat exchanger (not shown) to radiate heat and liquefy the high-temperature and high-pressure refrigerant (gas) and supply it to a freezer or the like.

In the fourth step, the freezer or the like uses an expansion valve (not shown) to reduce the pressure of the refrigerant (liquid) conveyed from the outdoor unit 10, thereby reducing the low-temperature and low-pressure refrigerant (liquid) described above (not shown). It can be fed to the evaporator.

After this, steps 1 through 4 described above may be repeated sequentially.

As described in relation to the second step, the outdoor unit 10 can generate a high-temperature and high-pressure refrigerant (gas) using a compressor (not shown) and supply it to a heat exchanger (not shown). . A high-temperature, high-pressure refrigerant (gas) produced by the compressor can be supplied to the heat exchanger via a conveying pipe (not shown).

In one embodiment, the outdoor unit 10 can adopt a configuration in which the above-described carrier pipe that carries such a high-temperature and high-pressure refrigerant (gas) is taken out and arranged outside the outdoor unit 10 . In a first example, an externally arranged conveying tube 12 may be configured such that one end 12a thereof is connected to the compressor and the other end 12b is connected to the heat exchanger. In a second example, an externally disposed carrier tube 12 has one end 12a connected to a portion of the carrier tube (not shown) and the other end 12b connected to another portion of the carrier tube (not shown). can be configured to be connected to

In any case, the conveying pipe 12 arranged outside has one end 12a directly or indirectly connected to the compressor and the other end 12b directly or indirectly connected to the heat exchanger. A portion (portion 12A of conveying tube 12) that is connected and located between one end 12a and the other end 12b can be configured to be accommodated in second heat exchange device 200 (as described below). .

(2) Hot water storage unit 20
The hot water storage unit 20 can include a tank 22 for storing water, a first pipe 24 connected to the tank 22 and a second pipe 26 connected to the tank 22 . It is known that within tank 22 hotter water moves upwards and cooler water moves downwards.

The first pipe 24 has one end connected near the bottom of the tank 22 and the other end connected to the first heat exchange device 100 (second heat exchanger 106 described later). , to the first heat exchange device 100 . The second pipe 26 has one end connected near the top of the tank 22, and the other end connected to the first heat exchange device 100 (second heat exchanger 106 described later) to perform the first heat exchange. It can be configured to convey the water heated by the device 100 to near the top of the tank 22 .

Further, near the upper portion of the tank 22 of the hot water storage unit 20, the other end 204b of the water supply pipe 204 passing through the second heat exchange device 200, which will be described later, can be connected. Thereby, water heated by the second heat exchange device 200 can be supplied to the vicinity of the upper portion of the tank 22 through the water supply pipe 204 .

Furthermore, a discharge pipe 28 (see FIG. 3) can be connected near the top of the tank 22 of the hot water storage unit 20 . Hot water located near the top of the tank 22 can be supplied to the interior of a house or the like 30 (see FIG. 3) via a discharge pipe 28 .

(3) First heat exchange device 100
FIG. 3 is a block diagram schematically showing a configuration of part of the reuse system 1 shown in FIG. 1 including the first heat exchange device 100. As shown in FIG.

As shown in FIG. 3, the first heat exchange device 100 includes a first heat exchanger 102, a compressor 104, a second heat exchanger 106, an expansion valve 108, and an exhaust pipe 110. be able to.

The first heat exchanger 102 transfers the heat of the air taken in from the outside of the first heat exchange device 100 to the first refrigerant (here, carbon dioxide as an example) 120, thereby The coolant 120 can be heated. The first heat exchanger 102 can supply the thus heated first refrigerant 120 to the compressor 104 via the tube 102a.

The compressor 104 further heats the first refrigerant 120 supplied from the first heat exchanger 102 by compressing it, and passes the heated first refrigerant 120 to the second heat exchanger via the tube 104a. 106.

The second heat exchanger 106 transfers the heat of the first refrigerant 120 supplied from the compressor 104 to the water conveyed from the tank 22 of the hot water storage unit 20 through the first pipe 24, This water can be heated. A second heat exchanger 106 may convey heated water to the tank 22 via a second tube 26 .

Further, the second heat exchange device 106 can supply the first refrigerant 120 cooled by heat transfer to water to the expansion valve 108 via the tube 106a.

The expansion valve 108 can be further cooled by reducing the pressure of the first refrigerant 120 supplied from the second heat exchanger 106 . Expansion valve 108 may supply cooled first refrigerant 120 to first heat exchanger 102 via tube 108a.

The exhaust pipe 110 can discharge the air cooled by the first refrigerant 120 supplied from the expansion valve 108 to the outside of the first heat exchange device 100 . For example, the exhaust pipe 110 has one end positioned near the pipe 108a (carrying the cooled first refrigerant 120) and the other end on the outer surface of the first heat exchange device 100 or the first can be arranged in a portion communicating with the outside of the heat exchange device 100 .

The air in the vicinity of tube 108a is cooled by a cooled first coolant 120 passing through tube 108a. Therefore, by arranging one end of the exhaust pipe 110 near the pipe 108a, the exhaust pipe 110 allows the air cooled by the first refrigerant 120 to flow from the other end to the outside of the first heat exchange device 100. can be discharged.

The other end of the exhaust pipe 110 may be arranged facing the outdoor unit 10 . Preferably, the other end of the exhaust pipe 110 is connected to this (not shown) heat exchanger (not shown) so that the air cooled by the first refrigerant 120 can easily reach the above-described heat exchanger (not shown) of the outdoor unit 10 . may be placed opposite the vessel.

In one embodiment, the closer the distance between the outdoor unit 10 and the first heat exchange device 100, the better.

Furthermore, between the outdoor unit 10 and the first heat exchange device 100, there is another object that prevents the air discharged from the exhaust pipe 110 of the first heat exchange device 100 from reaching the outdoor unit 10. It is preferably not arranged. Other objects, as used herein, may include, but are not limited to, devices, walls, sheets and/or buildings.

(4) Second heat exchange device 200
FIG. 4 is a diagram schematically showing an example of the configuration of the second heat exchange device 200 used in the reuse system shown in FIG. 1. As shown in FIG. Specifically, FIG. 4(a) is a side view schematically showing the configuration of the second heat exchange device 200 as viewed from the arrow B shown in FIG. 1, and FIG. FIG. 2 is a front view schematically showing the configuration of the heat exchange device 200 as seen from arrow C shown in FIG. 1;

The second heat exchange device 200 includes a storage chamber 202 having a substantially rectangular parallelepiped shape, and a portion 12A of a carrier pipe 12 that is housed in the storage chamber 202 and that carries the refrigerant (second refrigerant) used in the outdoor unit 10. a portion 204A of a water supply pipe 204 that conveys water to be supplied to the tank 22 of the hot water storage unit 20, which is housed in the storage chamber 202; a refrigerant (third refrigerant) 206 that fills the storage chamber 202; can include

A portion 12A of the conveying tube 12 can be configured to include a plurality of fixed shapes, as best shown in FIG. 4(b). Specifically, for example, the part 12A of the transport pipe 12 extends from one end 202a included in the storage chamber 202 toward the other end 202b included in the storage chamber 202, and then extends vertically from the other end 202b. (downwardly), then from the other end 202b toward one end 202a, and vertically (downwardly) from the one end 202a. obtain. That is, the portion 12A of the conveying tube 12 can be configured to include a plurality of fixed shapes that form a substantially two-letter shape.

In another example, the portion 12A of the carrier tube 12 may be configured to include a plurality of regular shapes, such as generally S-shapes or generally Z-shapes.

As shown in FIG. 2, one end 12a of the transfer pipe 12 is present at one end of the portion 12A, and the other end of the portion 12A has a transfer tube 12A, as shown in FIG. There may be another end 12b of tube 12 .

On the other hand, as shown in FIGS. 1 and 2, the water supply pipe 204 has one end 204a connected to a water supply source (not shown) (water supply, etc.) and the other end 204b connected to the tank 22 of the hot water storage unit 20. can be configured to be connected. Water supplied from the supply source is conveyed from one end 204a of the water supply pipe 204 through the second heat exchange device 200 (heated by the second heat exchange device 200) to the other end 204b, and is then transferred to the tank 22 of the hot water storage unit 20. can be supplied to

Returning to FIG. 4 , such a portion 204A of the water supply pipe 204 can be accommodated in the accommodation chamber 202 of the second heat exchange device 200 . Although not shown in FIG. 4, the portion 204A of the water supply pipe 204 also has a substantially two-letter shape, a substantially S-shape, a substantially Z-shape, or the like, similar to the portion 12A of the conveying pipe 12 described above. It can be configured to include a plurality of fixed shapes.

A portion 204A of the water supply pipe 204 can be arranged, for example, facing the portion 12A of the transport pipe 12 in the housing chamber 202 . Also, the portion 204A of the water supply pipe 204 may be spaced apart from the portion 12A of the carrier pipe 12 .

Furthermore, portion 204A of water supply pipe 204 may extend parallel to portion 12A of conveying pipe 12 . That is, the shape of the portion 204A of the water supply pipe 204 viewed from arrow C in FIG. 1 can be substantially the same as the shape of the portion 12A of the transport pipe 12 viewed from arrow C in FIG.

As shown in FIG. 4, the storage chamber 202 can be filled with a third coolant (for example, water or an aqueous solution of calcium chloride). In one embodiment, the storage chamber 202 is filled with the third refrigerant so as to immerse (substantially entirely abut) each of the portion 12A of the transport pipe 12 and the portion 204A of the water supply pipe 204. obtain.

The second heat exchange device 200 having the above configuration supplies the heat of the second medium heated by the outdoor unit 10 conveyed by the conveying pipe 12 to the tank 22 via the third refrigerant. Can be transferred to water.

As for the position where the second heat exchange device 200 is installed, referring to FIG. It is preferable that it be arranged at a position that does not overlap with the straight line connecting the heat exchange device 100 .

Here, there are countless straight lines connecting the outdoor unit 10 and the first heat exchange device 100, and examples of such straight lines are represented by a plurality of dotted lines in FIG. 1 for the sake of convenience. When the second heat exchange device 200 is installed at a position overlapping such a straight line, the air discharged (cooled) from the exhaust pipe 110 (see FIG. 3) of the first heat exchange device 100 is Reaching the outdoor unit 10 is more likely to be blocked by (the housing of) the second heat exchange device 200 . For this reason, the second heat exchange device 200 is preferably arranged at a position that does not overlap the straight line connecting the outdoor unit 10 and the first heat exchange device 100 .

Furthermore, by arranging the second heat exchange device 200 at a position facing the outdoor unit 10 as illustrated in FIG. can be easily accommodated in the accommodation chamber 202 of the heat exchange device 200.

3. Operation of reuse system 1 Next, an example of the operation performed by the reuse system 1 will be described with reference to FIG. FIG. 5 is a flowchart showing an example of operations performed by the reuse system 1 shown in FIG.

First, in step (hereinafter referred to as “ST”) 500, the first heat exchange device 100 is installed (prepared). As described above, the first heat exchange device 100 can be arranged such that its exhaust pipe 110 faces the outdoor unit 10 (a heat exchanger not shown).

Next, in ST502, the second heat exchange device 200 is installed (prepared). As described above, the second heat exchange device 200 can be arranged at a position facing the outdoor unit 10 and not overlapping the straight line connecting the outdoor unit 10 and the first heat exchange device 100 .

Next, in ST504, the first heat exchange device 100 operates. Specifically, the first heat exchange device 100 operates as described above with reference to FIG. Air cooled by the first refrigerant can be discharged toward the outdoor unit 10 .

Next, in ST506, the outdoor unit 10 operates as described in "2(1)" above. Here, the outdoor unit 10 supplies a high-temperature, high-pressure refrigerant (second refrigerant) compressed by a compressor (not shown) to the second heat exchange device 200 via a portion 12A of the conveying pipe 12. be able to.

Next, in ST508, the outdoor unit 10 uses a heat exchanger (not shown) to take in the heat of the high-pressure high-temperature refrigerant (second refrigerant) compressed by the compressor (not shown) from outside the outdoor unit 10. It can be transmitted to air. Here, the heat exchanger of the outdoor unit 10 transfers more thermal energy of the high-temperature, high-pressure refrigerant compressed by the compressor to the outdoor unit 10 as the temperature of the air taken in from the outside of the outdoor unit 10 becomes lower. It can be transmitted to the air taken in from the outside. That is, the efficiency of the heat exchanger of the outdoor unit 10 improves as the temperature of the air taken in from the outside of the outdoor unit 10 decreases. The air taken in from the outside of the outdoor unit 10 is lowered by containing the cooled air discharged through the exhaust pipe 110 of the first heat exchanger 100 as described above. Thereby, the efficiency of the heat exchanger of the outdoor unit 10 is improved.

Next, in ST510, the second heat exchange device 200 transfers the heat of the high temperature and high pressure refrigerant (second refrigerant) supplied from the outdoor unit 10 through the transfer pipe 12 through the third refrigerant, It can be transmitted to the water supplied to the tank 22 (see FIG. 3). The water thus heated can be supplied to tank 22 via water supply pipe 204 . Thereby, the temperature of the water stored in the tank 22 can rise.

After that, the reuse system 1 can repeatedly execute the operations after ST504 described above. When such an operation is repeatedly performed, when the temperature of the water stored in the tank 22 reaches a first threshold value (for example, 70 degrees Celsius), the first heat exchange device 100 causes the water stored in the tank 22 to Operation may cease until the temperature of the water being treated is below a second threshold (eg, 30 degrees Celsius).

As noted above, the temperature of the water stored in tank 22 may increase over time due to the heated water supplied from second heat exchange device 200 via water supply pipe 204 . Overall, this makes it possible to shorten the operating time of the first heat exchange device 100 , that is, to reduce the energy required to operate the first heat exchange device 100 .

In order to make the explanation easier to understand, the operations corresponding to each of ST504 to ST510 were explained to be executed sequentially, but in reality, the operations corresponding to each of ST504 to ST510 are different from the above. It may be performed in a different order, or the operations corresponding to each of ST504-ST510 may be performed in parallel with each other.

4. Modifications In the various examples described above, the case where the reuse system 1 includes both the first heat exchange device 100 and the second heat exchange device 200 has been described. However, the reuse system 1 can adopt a configuration including only one of the first heat exchange device 100 and the second heat exchange device 200 .

In the various examples described above, with reference to FIG. 4, in the storage chamber 202, the configuration in which the portion 12A of the transport pipe 12 and the portion 204A of the water supply pipe 204 extend facing each other has been described. However, such a configuration is merely an example.

For example, it is possible to employ a configuration in which a portion 12A of the transport pipe 12 is arranged below the accommodation chamber 202 and a portion 204A of the water supply pipe 204 is arranged above the accommodation chamber 202 . In this configuration, the third refrigerant (for example, water) filled in the storage chamber 202 and heated by the portion 12A of the conveying pipe 12 (the high-temperature, high-pressure second refrigerant conveyed by) moves upward. can be located. As a result, the higher temperature third coolant (water) can be positioned above the storage chamber 202 and the lower temperature third coolant (water) can be positioned below the storage chamber 202 . In this state, the water conveyed by the portion 204A of the water supply pipe 204 arranged above the storage chamber 202 can be heated by the third coolant (water) having a higher temperature. In this manner, water conveyed by portion 204A of water supply pipe 204 can be efficiently heated in chamber 202 . Also in such a configuration, the portion 12A of the transport pipe 12 and/or the portion 204A of the water supply pipe 204 can be configured to include a plurality of fixed shapes as described above.

As described above, in the reuse system 1 disclosed in the present application, the first heat exchange device 100 transfers the heat of the air taken in from the outside to the water supplied to the tank 22. , is transmitted through the first refrigerant (cools the first refrigerant), whereby the air cooled by the first refrigerant can be discharged (supplied) toward the outdoor unit 10 . As a result, the first heat exchange device 100 transmits the heat energy generated in the first heat exchange device 100 to the outdoor unit, thereby at least partially suppressing the energy consumed by the outdoor unit 10. can be done.

Furthermore, the second heat exchange device 200 can transfer the heat of the second refrigerant used by the outdoor unit 10 to the water supplied to the tank 22 via the third refrigerant. As a result, the second heat exchange device 200 transfers the thermal energy generated in the outdoor unit 10 to the water supplied to the tank 22 to heat the water supplied to the tank 22 (first The energy consumed by the heat exchange device 100 and/or other water heaters, etc.) can be at least partially reduced.

Therefore, according to the technology disclosed in the present application, it is possible to provide a recycling system and method that at least partially contributes to saving energy consumption.

As will be readily appreciated by one of ordinary skill in the art having the benefit of this disclosure, the various examples described above can be used in suitable combinations in various patterns with each other, unless inconsistent.

In view of the many possible embodiments in which the principles of the invention disclosed herein may be applied, the various illustrated embodiments are merely various preferred examples and techniques for the claimed invention. It should be understood that the scope should not be considered limited to these preferred various examples. Indeed, the scope of the claimed invention is defined by the appended claims. Therefore, all matters falling within the technical scope of the invention described in the claims are claimed as inventions of the present inventors.

1 reuse system 10 outdoor unit 12 transfer pipe 12A part of transfer pipe 20 hot water storage unit 22 tank 100 first heat exchanger 102 first heat exchanger 104 compressor 106 second heat exchanger 108 expansion valve 110 exhaust Pipe 120 First refrigerant 200 Second heat exchange device 202 Storage chamber 204 Water supply pipe 204A Part of water supply pipe 206 Third refrigerant

Claims (10)

an outdoor unit connected to a refrigerator or freezer;
A first heat exchanger that transfers heat of air taken in from the outside to a first refrigerant, a compressor that compresses the first refrigerant supplied from the first heat exchanger, and the compressor a second heat exchanger that transfers the heat of the first refrigerant supplied from to the water supplied to the tank; and the first refrigerant supplied from the second heat exchanger is decompressed to an expansion valve that supplies a first heat exchanger; and an exhaust pipe that discharges air cooled by the first refrigerant supplied from the expansion valve to the outside and is arranged to face the outdoor unit. a first heat exchange device comprising:
A reuse system comprising: 2. The recycling system of claim 1, wherein said first refrigerant is carbon dioxide. 2. The apparatus according to claim 1, wherein no other object is arranged between the outdoor unit and the first heat exchange device to prevent the air discharged from the exhaust pipe from reaching the outdoor unit. reuse system. an accommodation chamber for accommodating a portion of a conveying pipe that conveys a second refrigerant used in the outdoor unit and a portion of a water supply pipe that conveys water to be supplied to the tank; the portion of the conveying pipe; a second heat exchange device including a third refrigerant filled in the storage chamber so as to be in contact with the part of the water supply pipe;
2. The recycling system of claim 1, further comprising: 5. The recycling system of claim 4, wherein said third refrigerant is water. The second heat exchange device according to claim 4, wherein the second heat exchange device is arranged at a position facing the outdoor unit and not overlapping a straight line connecting the outdoor unit and the first heat exchange device. reuse system. A part of the transport pipe housed in the housing chamber,
extending from one end included in the storage chamber toward the other end included in the storage chamber, extending vertically from the other end, extending from the other end toward the one end, and 5. The recycling system of claim 4, configured to include a plurality of fixed shapes extending from one end in the vertical direction. A part of the water supply pipe housed in the housing chamber,
extends from one end included in the storage chamber to the other end included in the storage chamber, extends vertically from the other end, extends from the other end to the one end, and extends from the one end in the vertical direction 5. The recycling system of claim 4, configured to include a plurality of elongated shapes. A first heat exchanger that transfers heat of air taken in from the outside to a first refrigerant, a compressor that compresses the first refrigerant supplied from the first heat exchanger, and the compressor a second heat exchanger that transfers the heat of the first refrigerant supplied from to the water supplied to the tank; and the first refrigerant supplied from the second heat exchanger is decompressed to A first heat exchange device is provided that includes an expansion valve that supplies a first heat exchanger, and an exhaust pipe that discharges air cooled by the first refrigerant supplied from the expansion valve to the outside. stages and
A step in which the first heat exchange device discharges the cooled air from the exhaust pipe toward an outdoor unit connected to a refrigerator or a freezer provided facing the first heat exchange device. and,
A method comprising: a housing chamber housing a part of a conveying pipe that conveys a second refrigerant used in the outdoor unit and a part of a water supply pipe that conveys water to be supplied to the tank; providing a second heat exchange device including a third refrigerant charged in contact with the chamber;
The second heat exchange device transfers the heat of the second refrigerant discharged by the outdoor unit and conveyed by the conveying pipe from a part of the conveying pipe to the water supply pipe via the third refrigerant. transmitting to a portion;
10. The method of claim 9, further comprising:

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