JPH1073336A - Absorption type refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make, an absorption type refrigerator small in size. SOLUTION: An absorber 3 and a condenser 5 in an absorption cycle 101 are separated from a high temperature regenerator 1 and a low temperature regenerator 2 and constructed integrally with a cooling water circulation circuit 102, as a radiating part 120 which is cooled by cooling water of the cooling water circulation circuit 102 made to flow down therethrough. The absorber 3 and the condenser 5 constitute a heat receiving part of the cooling water circulation circuit 102 and are cooled directly by the cooling water in the radiating part 120 of the cooling water circulation circuit 102 and, therefore, exhaust heat from the absorption cycle 101 can be released. Since only the alteration to give a function of a cooling tower to the absorber 3 and the condenser 5 is needed and it is unnecessary to provide the cooling tower separately, the volume of an absorption type refrigerator can be reduced sharply in comparison with the case when the cooling tower is provided as a separate body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption refrigerating apparatus having an absorption cycle using an aqueous solution of lithium bromide or the like as an absorbing solution.

[0002]

2. Description of the Related Art In a conventional double-effect absorption refrigeration system shown in FIGS. 5 and 6, a low-concentration absorbent is heated and boiled by a burner B in a high-temperature regenerator 1, and a medium-concentration absorbent and a refrigerant are heated. The vapor is separated from the vapor, and the medium-concentration absorbent is sent from the medium-concentration absorbent flow path L1 to the low-temperature regenerator 2, where it is separated into high-concentration absorbent and refrigerant vapor. It is supplied to the absorber 3 via the path L2. On the other hand, the refrigerant vapor separated by the high-temperature regenerator 1 and the low-temperature regenerator 2 is supplied to the condenser 5 through the refrigerant flow path L5 or the refrigerant vapor outlet 21 and the gap 5A, and the refrigerant vapor is cooled by the condenser 5 And becomes a refrigerant liquid.

[0003] The absorber 3 and the evaporator 4 communicate with each other by a partition plate 40 having a communication port, and the high-concentration absorbent is dispersed in the absorber 3 by the high-concentration absorbent dispersion device 32.
When the refrigerant liquid generated by the condenser 5 is sprayed on the evaporation coil 41 by the refrigerant liquid spraying section 42 in the evaporator 4, the refrigerant liquid is spread on the surface of the evaporation coil 41. The heat of vaporization is taken from the cold and hot water passing through the inside to evaporate and become refrigerant vapor, while on the surface of the absorption coil 301, the high-concentration absorption liquid absorbs the refrigerant vapor and generates heat. The absorption cycle is configured such that the absorbent, which has absorbed the refrigerant in the absorber 3 and reduced in concentration, returns to the high-temperature regenerator 1 through the low-concentration absorbent flow path L3 by the absorbent pump P1.

The cold and hot water whose heat has been removed in the evaporating coil 41 circulates through the air-conditioning heat exchanger 44 provided in the cooling object by the operation of the cold and hot water pump P3 provided in the cold and hot water channel 45. The cold / hot water whose temperature has risen in the air-conditioning heat exchanger 44 is cooled by the evaporating coil 41 again.

[0005] The absorption coil 301 of the absorber 3 and the cooling coil 501 of the condenser 5 form a continuous coil through which cooling water for exhaust heat passes by a cooling water pump P2. The heat generated when the liquid absorbs the refrigerant vapor and the heat absorbed from the refrigerant vapor in the cooling coil 501 of the condenser 5 are absorbed by the cooling water for exhaust heat passing through the coils 301 and 501, and The cooling tower CT moves to the cooling tower CT provided outside through the passage 122.
Released at

[0006]

In the conventional absorption refrigeration system configured as described above, the cooling for the absorption cycle in which the absorption liquid is circulated by receiving the heat of the burner B is:
This is performed by circulating the cooling water for exhaust heat cooled by the cooling tower CT provided outside to the absorption coil 301 and the cooling coil 501. For this reason, it is necessary to provide the absorber with the absorption coil 301 and the condenser 5 with the cooling coil 501 as parts where the heat from the absorption cycle is received by the cooling water for exhaust heat. It is necessary to provide a cooling tower CT capable of radiating heat to cool the cooling system, and therefore, it is necessary to provide a large absorber 3 and a condenser 5 and a cooling tower CT, respectively. However, miniaturization was difficult.

In the conventional absorption refrigeration system, a heat receiving portion for cooling water for exhaust heat receiving heat from the absorption cycle and a cooling tower CT for heat radiation are formed separately from each other. Accordingly, it is necessary to connect the absorption coil 301 and the cooling coil 501 as the heat receiving unit and the cooling tower CT as the heat radiating unit with a dedicated pipeline, and the configuration is complicated only by the dedicated pipeline. There was a problem that the number of parts increased.

An object of the present invention is to reduce the size of the absorption refrigeration system without lowering the refrigeration capacity thereof, to simplify the configuration, and to reduce the number of parts.

[0009]

According to a first aspect of the present invention, a regenerator for separating a refrigerant vapor from an absorbing liquid by heating an absorbing liquid containing the refrigerant by a heating source, and the refrigerant separated by the regenerator are provided. A condenser for cooling and condensing the vapor, an evaporator for evaporating the refrigerant condensed in the condenser under a low pressure to form a cooling source, and a refrigerant vapor evaporated in the evaporator is supplied from the regenerator. An absorption cycle which is formed by an absorber for absorbing the absorbent and a pump for returning the absorbent from the absorber to the regenerator, and further comprising a cooling water circulation circuit for cooling the absorber and the condenser. In the refrigeration system, a heat receiving unit in the cooling water circulation circuit that receives exhaust heat from the absorber and the condenser in the absorption cycle, and a heat radiating unit in the cooling water circulation circuit, and a surface through a heat conduction wall. The technical means that is formed by the back surface.

According to a second aspect of the present invention, in the first aspect, the heat conducting wall is a pipe-like tube, and the technical means is that the outer peripheral surface is a heat receiving portion and the inner peripheral surface is a heat radiating portion. According to a third aspect of the present invention, the regenerator in the absorption cycle is disposed separately from the absorber and the condenser together with the heating source.

According to the above configuration, in the absorption cycle, the high-concentration absorbent separated by the regenerator is supplied to the absorber, the refrigerant vapor separated from the absorbent is supplied to the condenser, and the refrigerant vapor is supplied to the condenser. And becomes a refrigerant liquid. When the high-concentration absorbing liquid is sprayed in the absorber and the refrigerant liquid generated by the condenser is sprayed in the evaporator, the refrigerant liquid in the evaporator deprives the evaporator of heat of vaporization and evaporates to evaporate the refrigerant vapor. The evaporator serves as a cooling source in the object to be cooled.On the other hand, in the absorber, the high-concentration absorbing liquid absorbs the refrigerant vapor to generate heat, and the absorbing liquid, which has absorbed the refrigerant in the absorber and reduced in concentration, is pumped by the pump. Return to the regenerator.

[0012] Here, in the cooling water circulation circuit, a heat receiving section that receives exhaust heat from the absorber and the condenser in the absorption cycle includes:
It is united with the heat radiating part via the heat conduction wall. Therefore, in the cooling water circulation circuit, when the exhaust heat is received by the heat receiving section, the heat is immediately radiated by the heat radiating section via the heat conducting wall. in this way,
In the cooling water circulation circuit, the heat receiving portion that receives the heat exhausted from the absorption cycle and the heat radiating portion that emits the heat are formed on the front surface and the back surface via the heat conduction wall, so that the exhaust heat is moved. It is only necessary to provide a heat conducting wall for heat exchange between the heat receiving portion and the heat radiating portion, and the volume of the cooling water circulation circuit can be reduced. In addition, a connecting line between the heat receiving unit and the heat radiating unit is not required, the configuration is simplified, and the number of parts can be reduced.

Further, the heat source and the regenerator in the absorption cycle can be handled while being separated from the absorber and the condenser, so that the absorber and the condenser can be disposed in the heat radiating portion of the cooling water circulation circuit. It can be configured to be close or merged. Therefore, as compared with the case where the absorber and the condenser are provided separately from the heat radiating portion (cooling tower) of the cooling water circulation circuit, the size of the entire device can be reduced while securing the same heat radiating capacity. .

[0014]

FIG. 1 shows an air conditioner according to the present invention. The air conditioner is an absorption refrigeration system 1 as an outdoor unit.
00 and the indoor unit RU, and the absorption refrigeration system 100
Is composed of an absorption cycle 101 and a cooling water circulation circuit 102. The air conditioner is a control device (not shown)
Is controlled by

The absorption cycle 101 circulates a refrigerant and an aqueous solution of lithium bromide as an absorption liquid, and is roughly classified into a regenerator having a gas burner B as a heating source, and an absorber, a condenser and an evaporator. You. The regenerator is gas burner B
High-temperature regenerator 1 provided with
And a low-temperature regenerator 2 disposed so as to cover the outside of the device. A pipe connecting the high-temperature regenerator 1 and the low-temperature regenerator 2 and a heat exchanger H are additionally provided.

A high-temperature regenerator 1 is provided above a heating tank 11 heated by a gas burner B, above a medium-concentration absorbent separating cylinder 1.
2, a vertical cylindrical airtight refrigerant recovery tank 10 is provided so as to cover the outer periphery of the medium-concentration absorbing liquid separation tube 12 from above. Thus, in the high-temperature regenerator 1, the low-concentration absorbing liquid contained in the heating tank 11 is heated by the gas burner B, and water as a refrigerant in the low-concentration absorbing liquid is evaporated to form refrigerant vapor (water vapor).
As a result, the intermediate-concentration absorbing liquid is separated to the outside of the medium-concentration absorbing liquid separation tube 12, the medium-concentration absorbing liquid concentrated by evaporation of the refrigerant vapor is left in the storage portion 12a inside the medium-concentration absorbing liquid separation tube 12, and the separated refrigerant vapor is collected as refrigerant. Collected in tank 10.

The low-temperature regenerator 2 is a vertical cylindrical low-temperature regenerator case 2 installed eccentrically on the outer periphery of the refrigerant recovery tank 10.
0, a refrigerant vapor outlet 21 is provided around the ceiling of the low-temperature regenerator case 20. Low temperature regenerator case 20
The top of the ceiling is connected to the storage part 12a of the medium-concentration absorption liquid separation cylinder 12 via the heat exchanger H by the medium-concentration absorption liquid flow path L1. The refrigerant recovery tank 10 and the low temperature regenerator case 20 are integrally welded to each other at the bottom plate portions 13 to form a heat receiving portion case.

The storage section 12 is provided in the medium-concentration absorption liquid flow path L1.
an orifice (not shown) for restricting the flow rate of the medium concentration absorbing liquid flowing from
The medium-concentration absorbent is supplied into the low-temperature regenerator case 20 by a pressure difference from the medium-concentration absorbent separation cylinder 12. Thus, the low-temperature regenerator 2 reheats the medium-concentration absorbing liquid supplied into the low-temperature regenerator case 20 using the outer wall of the refrigerant recovery tank 10 as a heat source, and the medium-concentration absorbing liquid is
The high-concentration absorbent is separated into refrigerant vapor and high-concentration absorbent in a gas-liquid separation unit 22 above the high-concentration absorbent.
Is stored at

The configuration of the absorption cycle 101 other than the regenerator is a substantially lotus root shape in which a number of pipe-like vertical hole passages 31 serving as heat conduction walls are formed in the vertical direction inside the vertical cylindrical absorber case 30. , An evaporator 4 arranged via a partition plate 40 having a large number of communication ports 40a inside the absorber case 30 and on the outer peripheral side of the portion where the vertical hole passage 31 is formed, and the absorber 3 and the evaporator 4, a substantially lotus root-shaped condenser 5 in which a number of pipe-shaped vertical passages 51 serving as heat conduction walls are formed inside a cylindrical condenser case 50 like the absorber 3. . The vertical passage 31
And the vertical hole passage 51 are formed by communicating upper and lower pipes.

The absorber 3 sprays the high-concentration absorbing liquid flowing out of the high-concentration absorbing liquid flow path L2 communicating with the high-concentration absorbing liquid receiving portion 23 of the low-temperature regenerator 2 at an upper portion in the absorber case 30. And a coil 33 is wound around the outer periphery of a number of vertical hole passages 31 below the high concentration absorbent spraying device 32 (see FIG. 2). In the absorber 3, when the high-concentration absorbent flows from the high-concentration absorbent flow path L <b> 2 due to the pressure difference and the high-concentration absorbent is sprayed on the coil 33, the high-concentration absorbent becomes an outer peripheral surface of the vertical hole passage 31. And spreads in the form of a thin film, flows downward by the action of gravity, absorbs the surrounding refrigerant vapor, and becomes a low-concentration absorbent.

When absorbing the refrigerant vapor, the absorber 3 generates heat. However, the cooling water for exhaust heat described later flows down the vertical hole passage 31 and is cooled. A coil 31a is also arranged on the inner peripheral surface of the vertical hole passage 31, thereby delaying the flow rate of the cooling water for exhaust heat and increasing the heat exchange time to promote cooling (see FIG. 2). The refrigerant vapor absorbed by the high-concentration absorbing liquid is water vapor generated in the evaporator 4 described later. Note that the bottom 34 of the absorber 3 is
1 and a low-concentration absorbent flow path L3 equipped with a heat exchanger H
Is connected to the bottom of the heating tank 11 of the high-temperature regenerator 1, and the low-concentration absorbent in the absorber 3 is supplied into the heating tank 11 by the operation of the absorbent pump P1.

The evaporator 4 is provided with a vertical cylindrical evaporating coil 41 through which cold and hot water for cooling and heating flows inside the absorber case 30 on the outer periphery of the partition wall 40, and sprays the refrigerant liquid above the evaporator. The tool 42 is attached. In addition, the bottom 43 of the evaporator 4
The storage section 1 of the medium-concentration absorption liquid separation cylinder 12 of the high-temperature regenerator 1 is heated by the heating absorption liquid flow path L4 having the heating electromagnetic valve 6.
2a. Further, the refrigerant liquid generated by the condenser 5 described later is supplied to the refrigerant liquid dispersing device 42 through the refrigerant liquid supply path L6.

In the evaporator 4, when the refrigerant liquid (water) is dropped on the evaporation coil 41 from the refrigerant liquid sprayer 42 during the cooling operation, the dropped refrigerant liquid is subjected to surface tension to the evaporation coil 41.
Of the vaporizing coil 41 in the evaporating / absorbing case 30 at a low pressure (for example, 6.5 mmHg) while evaporating by evaporating and evaporating. The air-conditioning cold / hot water flowing in the coil 41 is cooled.

The condenser 5 has a refrigerant vapor passage 5 A communicating with the low-temperature regenerator case 20 at a position above the condenser case 50.
Are opened, and a refrigerant flow path L5 communicating with the bottom portion 14 of the refrigerant recovery tank 10 of the high temperature regenerator 1 is opened and communicated with a lower portion of the condenser case 50, and each of them has a pressure difference (in the condenser case, The refrigerant is supplied into the condenser case 50 by about 70 mmHg). Inside the condenser case 50, there is provided a refrigerant liquid receiver 52 for receiving and storing a refrigerant liquid in which supplied refrigerant vapor is cooled and liquefied by cooling water for exhaust heat of a cooling water circulation circuit 102 described later. I have.

In the condenser 5, the refrigerant vapor supplied into the condenser case 50 is cooled by the vertical hole passage 51 and liquefied. The lower part of the condenser 5 and the refrigerant liquid dispersing tool 42 disposed above the evaporator 4 communicate with each other through a refrigerant liquid supply path L6, and the liquefied refrigerant liquid is supplied to the refrigerant liquid provided in the refrigerant liquid supply path L6. The cooling liquid is supplied to the coolant sprayer 42 via the cooler 53.

With the above configuration, in the absorption cycle 101 of the present embodiment, the absorption liquid is supplied from the high-temperature regenerator 1 → the medium-concentration absorption liquid flow path L1 → the low-temperature regenerator 2 → the high-concentration absorption liquid flow path L2 → the absorber 3 It circulates in the order of → absorbent pump P1 → low concentration absorbent flow path L3 → high temperature regenerator 1. The refrigerant is a high-temperature regenerator 1
(Refrigerant vapor) → refrigerant flow path L5 (refrigerant vapor) or low-temperature regenerator and refrigerant vapor passage 5A (refrigerant vapor) → condenser 5 (refrigerant liquid) → refrigerant liquid supply path L6 (refrigerant liquid) → refrigerant liquid cooler 53
(Refrigerant liquid) → refrigerant liquid sprayer 42 (refrigerant liquid) → evaporator 4
(Refrigerant vapor) → absorber 3 (absorbent) → absorbent pump P1
It circulates in the order of the low concentration absorbent flow path L3 and the high temperature regenerator 1.

In contrast to the absorption cycle 101 having the above-described configuration, the cooling water circulation circuit 102 of this embodiment connects the absorber case 30 and the condenser case 50 to the cooling water circulation circuit 10.
2, as shown in FIG. 2, the cooling water for exhaust heat is allowed to flow directly from above into the vertical passages 31, 51 of the absorber 3 and the condenser 5 into which the vertical passages 31, 51 are installed.
Is used as the heat receiving portion 102a of the cooling water circulation circuit 102, and the inner circumferential surface of each
By setting to 20, the proximity of the heat receiving unit 102a and the heat radiating unit 120 is achieved.

Next, the cooling water circulation circuit 102 will be described. The cooling water circulation circuit 102 self-cools the cooling water for exhaust heat by causing the cooling water for exhaust heat to flow down into the vertical hole passages 31 and 51, partially evaporating the cooling water for exhaust heat falling into the atmosphere, and cooling the remaining cooling water for exhaust heat. A circulation circuit for performing cooling, the absorption cycle 101
The exhaust heat cycle is formed by radiating the exhaust heat to the atmosphere to lower the temperature.

As described above, the heat radiating portion 120 is formed on the inner peripheral side of the vertical hole passages 31 and 51, and a cooling water pan 121 which receives cooling water for exhaust heat flowing down is provided below the vertical hole passage 31.
Is provided.

The cooling water flow path 122, which forms a heat discharging cycle from the cooling water pan 121 to the upper portion of the vertical hole passage 51, pumps the cooling water for exhaust heat from the cooling water pan 121 to the upper portion of the vertical hole passage. A cooling water pump P2 is provided for cooling water, and a cooling water pan 121 is provided with a water supply port 12 of a water supply path 124 connected to a water supply source via an electromagnetic valve 123.
5 is open.

Above the vertical passages 31 and 51, a blower S for generating an airflow upward is provided. By the blower S, evaporation of the cooling water for exhaust heat flowing down the vertical hole passages 31 and 51 is promoted, and the cooling effect is increased.
A disperser (not shown) for uniformly dispersing the cooling water for exhaust heat flowing from the cooling water passage 122 into the respective vertical hole passages 51 of the condenser 5 is provided above the vertical hole passage 51. .

With the above configuration, during the cooling operation, the cooling water for exhaust heat in the cooling water circulating circuit 102 is dissipated by the operation of the cooling water pump P2 so that the radiating portion 120 (vertical hole passages 31, 51) →
Cooling water pan 121 → Cooling water pump P2 → Cooling water channel 12
2 → circulation in the order of the heat radiating section 120 (vertical hole passages 31, 51).

The indoor unit RU is provided with an air-conditioning heat exchanger 44. The air-conditioning heat exchanger 44 is connected to the evaporating coil 41 of the evaporator 4 by a cold / hot water flow path 45 formed by a rubber hose or the like. The cold / hot water flow path 45 is provided with a cold / hot water pump P3 for circulating cold / hot water between the evaporating coil 41 and the air-conditioning heat exchanger 44. With the above configuration,
The cold / hot water having a low temperature in the evaporating coil 41 circulates in the order of the evaporating coil 41 → the cold / hot water channel 45 → the air conditioning heat exchanger 44 → the cold / hot water channel 45 → the cold / hot water pump P3 → the evaporating coil 41. The indoor unit RU has an air conditioning heat exchanger 44,
A blower 46 is provided to allow room air to pass through and blow out the room again.

The absorption liquid flow path L4 and the heating solenoid valve 6 are
This is provided for the heating operation. During the heating operation, the heating electromagnetic valve 6 is opened and the absorption liquid pump P1 is operated.
As a result, during the heating operation, the medium-concentration absorbing liquid separation cylinder 12
The high-temperature medium-concentration absorbing liquid inside the evaporator 4 flows into the evaporator 4 from the bottom 43 of the evaporator 4, and the cold / hot water in the evaporator coil 41 is heated. The fluid enters the absorber 3 through the communication port 40, and is returned to the heating tank 11 by the absorbent pump P1 via the low-concentration absorbent flow path L3. The heated cold water in the evaporating coil 41 is supplied from the cold / hot water flow passage 45 to the air conditioning heat exchanger 44 by the operation of the cold / hot water pump P3, and serves as a heat source for heating.

As described above, in the present embodiment, the radiator 120 of the cooling water circulation circuit 102 is incorporated in the absorption cycle 101, and the radiator 120 directly
Since the exhaust heat from 1 is cooled by the exhaust heat cooling water, it is not necessary to provide a cooling tower in the cooling water circulation circuit 102 separately from the absorption cycle. For this reason, compared with the case where the cooling tower is provided separately in the cooling water circulation circuit 102,
The volume of the entire absorption refrigeration apparatus 100 can be significantly reduced.

The heat receiving section 10 of the cooling water circulation circuit 102
Since the pipe connecting the heat radiating unit 120 to the heat radiation unit 120 is unnecessary,
The configuration is simple and the number of parts can be reduced.

FIG. 3 shows a schematic external view of the above embodiment. As is clear from FIG. 3, it can be seen that the width can be reduced and the volume is reduced as compared with the conventional absorption refrigeration apparatus shown in FIG. In the above embodiment, the coils 33, 31 are provided on the outer and inner circumferences of the vertical passages 31, 51, respectively.
Although a is provided, a groove may be provided around the inner and outer circumferences, or one of the outer circumference and the inner circumference may be a coil and the other may be a groove.

FIG. 4 shows a modification of this embodiment. In the above embodiment, the counter flow type in which the blower S is disposed above the condenser 5 in the heat radiating section 120 to generate an upward airflow is shown. However, in the modification of FIG. A cross-flow type in which a blower S is arranged on the side of No. 3 is adopted. In this case, it is necessary to provide horizontal hole passages 511 and 311 instead of the vertical holes in the condenser 5 and the absorber 3. In addition, instead of the vertical spiral of the above embodiment, the evaporating coil 41 is provided in the same manner as the horizontal holes 511 and 311, and is provided with a spiral in the horizontal direction or separated from the left and right sides so that the coil is vertically adhered. It is necessary to make a zigzag shape.

In the above embodiment, the indoor unit RU is provided with only the air conditioning heat exchanger 44. However, in order to perform the dehumidifying operation without lowering the indoor temperature, the air once cooled by the air conditioning heat exchanger 44 is used. Air-conditioning heat exchanger 4
4 may be juxtaposed. In the above embodiment, a double-effect type is shown, but a single-effect type may be used. The heating source may be an oil burner or an electric heater. Although the air conditioner using the absorption refrigeration apparatus has been described in the above embodiment, the air conditioning apparatus may be used for other refrigeration apparatuses such as a refrigerator and a freezer.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an air conditioner showing an embodiment of the present invention.

FIG. 2 is a partially enlarged view showing a heat receiving section and a heat radiating section in the absorption refrigeration apparatus of FIG.

FIG. 3 is a schematic front view showing an arrangement configuration in the absorption refrigeration apparatus of the embodiment.

FIG. 4 is a schematic front view showing an arrangement configuration of a modification of the absorption refrigeration apparatus of the embodiment.

FIG. 5 is a schematic configuration diagram of a conventional air conditioner.

FIG. 6 is a schematic front view showing an arrangement configuration in a conventional absorption refrigeration apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High temperature regenerator 2 Low temperature regenerator 3 Absorber 4 Evaporator 5 Condenser 100 Absorption refrigeration system 101 Absorption cycle 102 Cooling water circulation circuit 102a Heat receiving part 120 Heat radiating part P1 Absorbing liquid pump B Gas burner (heating source)

Claims (3)

[Claims] 1. A regenerator for heating an absorption liquid containing a refrigerant by a heating source to separate refrigerant vapor from the absorption liquid, a condenser for cooling and condensing the refrigerant vapor separated by the regenerator, An evaporator for evaporating the refrigerant condensed in the evaporator under low pressure to form a cooling source; an absorber for absorbing the refrigerant vapor evaporated in the evaporator into an absorbent supplied from the regenerator; and Forming an absorption cycle from a pump that returns the absorbent to the regenerator; and an absorption refrigeration system including a cooling water circulation circuit for cooling the absorber and the condenser. A heat receiving unit in the cooling water circulation circuit that receives exhaust heat from the condenser and a heat radiating unit in the cooling water circulation circuit are formed by a front surface and a back surface via a heat conduction wall. Absorption refrigeration equipment. 2. The absorption refrigeration apparatus according to claim 1, wherein the heat conduction wall is a pipe-like tube, and the outer peripheral surface is a heat receiving portion and the inner peripheral surface is a heat radiating portion. 3. The absorption refrigerating apparatus according to claim 1, wherein the regenerator in the absorption cycle is disposed separately from the absorber and the condenser together with the heating source.