JPH11344269A - Absorption refrigerating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve an efficiency of thermal absorption of a regenerator. SOLUTION: A discharging cylinder 114 for use in discharging combustion gas of a gas burner B is arranged to pass through a central part of each of a high temperature regenerator 1 and a low temperature regenerator 2 and then a cylindrical heating section 113 is extended above a heating tank 11 of the high temperature regenerator 1. Absorbing liquid within an enclosed wall-like container 110 of a heating tank 10 and within a ceiling heating section is heated and further absorbing liquid within the cylindrical heating section 113 and absorbing liquid within the low temperature regenerator 2 can be heated with combustion gas passing through the discharging cylinder 114. Since a heat absorbing location for combustion gas at the gas burner B is also present at the low temperature regenerator 2, an efficiency of heat absorption is improved. In addition, since a load for absorbing heat at the high temperature regenerator 1 is reduced, a thermal fatigue and a high temperature corrosion are reduced and a durability is increased.

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 in which an absorption cycle is formed by using an aqueous solution of lithium bromide or the like as an absorbing solution. The present invention relates to an absorption refrigeration apparatus comprising a double-effect regenerator comprising a low-temperature regenerator utilizing the latent heat of steam.

[0002]

2. Description of the Related Art Conventionally, for example, in an absorption type air conditioner using an absorption type air conditioner 100 shown in FIG. 4, in an absorption cycle in which a high temperature regenerator 1 is heated and an absorption liquid pump P1 is operated, the inside of an evaporator 4 is removed. The water cooled by the cold / hot water pipe (evaporation coil 41) is used as a cooling source and supplied to the indoor heat exchanger (air conditioner heat exchanger 44) of the indoor unit 200, and the indoor heat exchanger (air conditioner heat exchanger) is provided. 44), the convection fan (blower 4
5) is activated to cool the room. Further, the absorbent pump 1 is operated in a state where the evaporator 4 is communicated with the high-temperature regenerator 1 through the heating absorbent flow path L4, and the high-temperature absorbent heated by the high-temperature regenerator 1 is sent to the evaporator 4. By supplying the water, the water is heated by a cold / hot water pipe (evaporation coil 41) in the evaporator 4 to serve as a heating source, and is similarly supplied to an indoor heat exchanger (air conditioning heat exchanger 44) to perform a heating operation. .

[0003] The absorption type air conditioner 10 constructed as described above.
0, in order to efficiently absorb the heat generated by the heating means such as the gas burner B for heating the high-temperature regenerator 1 into the regenerator, as shown in FIG. 11 is formed in a substantially inverted bowl shape formed so as to cover the combustion flame of the gas burner B, and a low-temperature regenerator 2 is formed outside a refrigerant recovery tank 10 for collecting refrigerant vapor generated in the high-temperature regenerator 1. A double effect type regenerator for re-heating the medium concentration absorbing liquid from which the refrigerant vapor has been separated in the high temperature regenerator 1 by utilizing the latent heat of the refrigerant vapor in the high temperature regenerator 1 to further separate the refrigerant vapor is provided. Used. Here, in order to efficiently absorb the heat of a heating means such as a gas burner that generates a high temperature, heat-absorbing fins are provided in a heated portion of the high-temperature regenerator.

[0004]

In the conventional absorption refrigerating apparatus configured as described above, heat of a heating means such as a gas burner that generates a high temperature is absorbed only by a high-temperature regenerator. Had a limited efficiency.

An object of the present invention is to improve heat absorption in a regenerator.

[0006]

According to a first aspect of the present invention, a low-concentration absorbent is separated into a high-concentration absorbent and a refrigerant in a regenerator heated by a heating means, and the inside of the evaporator is air-conditioned. The refrigerant liquid is sprayed and evaporated on the evaporating coil through which the cold and hot water flows as a heat medium for cooling, and the cold and hot water is cooled. In the absorber, the cooling water for exhaust heat flows while being connected to the cooling tower in the absorber. The regenerator is sprayed with the high-concentration absorbing liquid in the cooling coil to absorb the evaporated refrigerant, and the low-concentration absorbing liquid that has absorbed and reduced the concentration of the refrigerant is provided in the low-concentration absorbing liquid flow path by the absorbent pump. In the absorbent refrigerating apparatus, the regenerator is a high-temperature regenerator that heats the low-concentration absorbent by heat of the gas to be heated heated by the heating means and separates the low-concentration absorbent into the medium-concentration absorbent and the refrigerant vapor, With the high temperature regenerator A heated gas discharge passage for discharging the heated gas after having been exchanged and absorbed heat is inserted therein, and is separated by the high temperature regenerator by heat of the heated gas passing through the heated gas discharge passage. And a low-temperature regenerator for heating the medium-concentration absorbing liquid to separate it into high-concentration absorbing liquid and refrigerant vapor.

According to a second aspect, in the first aspect, the low-temperature regenerator is provided outside a refrigerant recovery tank for recovering the refrigerant vapor generated in the high-temperature regenerator, and the latent heat of the refrigerant vapor generated in the high-temperature regenerator is provided. And the sensible heat of the gas to be heated is used as a heating source. According to a third aspect, in the first and second aspects, the heating means is a gas burner that burns using gas as fuel, and the gas to be heated is a combustion gas of the gas burner.

[0008]

In this absorption refrigeration apparatus, when the high-temperature regenerator is heated by the gas to be heated from the heating means, the refrigerant vapor is separated from the low-concentration absorbent in the high-temperature regenerator, and the low-concentration regenerator is cooled. The absorption liquid is concentrated to become a medium concentration absorption liquid, and the medium concentration absorption liquid is supplied to a low temperature regenerator. In the low-temperature regenerator, a heated gas discharge passage for discharging the heated gas after heat exchange and heat absorption in the high-temperature regenerator is inserted, and the heated gas discharge passage passes through the heated gas discharge passage. When passing, the medium-concentration absorbent supplied to the low-temperature regenerator through the wall of the heated-gas discharge passage is heated by the heat of the heated gas, the refrigerant vapor is separated from the medium-concentration absorbent, and the high-concentration absorbent is separated. Becomes

[0009] The refrigerant vapor separated in the high-temperature regenerator and the low-temperature regenerator is supplied to a condenser, and the high-concentration absorbent concentrated in the low-temperature regenerator is supplied to the absorber. In the condenser, the refrigerant vapor is cooled and liquefied, supplied to the evaporator, and removes heat during evaporation to serve as a cooling source. The evaporator and the absorber communicate with each other. When the high-concentration absorbent is supplied, the absorber absorbs the refrigerant vapor evaporated by the evaporator and becomes a low-concentration absorbent. The circulation is repeated thereafter.

In the present invention, the gas to be heated from the heating means first heats the high-temperature regenerator, and further, a passage for exchanging heat in the high-temperature regenerator and discharging the gas to be heated after the heat is absorbed is inserted therein. Since the heat of the gas to be heated is reused in the low-temperature regenerator, the efficiency of heat absorption in the regenerator is high.

According to the second aspect of the present invention, the low-temperature regenerator includes not only the sensible heat of the gas to be heated after being heated by the heating means and exchanging heat with the high-temperature regenerator but also absorbing heat, as well as the gas in the refrigerant recovery tank of the high-temperature regenerator. Since multiple heating sources are used by utilizing the latent heat of the refrigerant vapor, there is a margin in the heat absorption capacity of the low-temperature regenerator,
The degree of freedom in designing the heat absorbing structure is increased, and an inexpensive device can be provided.

According to the third aspect, the gas burner is used as the heating means. In the gas burner, high-temperature combustion gas is generated along with combustion, and when the combustion gas exchanges heat in the high-temperature regenerator and is absorbed, and then passes through the heated gas discharge passage inserted in the low-temperature regenerator. In addition, since the heat of the combustion gas is absorbed again, the heat generated by the gas burner can be efficiently absorbed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an air conditioner, which is provided with an absorption refrigeration system 100 comprising a refrigerator main body 101 and a cooling tower (cooling tower) CT as an outdoor unit.
An indoor unit 200 is provided. This air conditioner is controlled by the control device 300.

The refrigerator main body 101 has a double effect type regenerator including a high temperature regenerator 1 and a low temperature regenerator 2, and a gas burner B as a heating means is disposed below the high temperature regenerator 1. . An absorber 3 and an evaporator 4 are provided on the outer periphery of the low-temperature regenerator 2, and a condenser 5 is provided above the evaporator 4.

In the high-temperature regenerator 1, a heating tank 11 which is heated by the combustion gas of the gas burner B and boils the low-concentration absorbent therein has an inner wall surrounding the combustion flame of the gas burner B as shown in FIG. 110a and outer wall 11
0b and the surrounding wall-shaped container portion 110 which is hollowly formed by the bottom wall 110c, and the inner wall 110a and the outer wall 110b which extend from the upper edges toward the center and are hollowly formed, and the combustion generated by the gas burner B at the center thereof. A ceiling container 112 having a combustion gas outlet 111 for allowing gas to pass therethrough,
It has a substantially inverted funnel shape composed of a cylindrical heating portion 113 extending upward from the ceiling container portion 112, and a central portion of the cylindrical heating portion 113 has a discharge port communicating with the combustion gas discharge port 111. The cylinder 114 is arranged upward.

Outside the cylindrical heating section 113, an absorbing liquid chamber 115 for receiving the medium-density absorbing liquid from which the refrigerant vapor (water vapor) is separated when the heated low-concentration absorbing liquid overflows is formed. Is provided. Further, a vertical cylindrical airtight refrigerant recovery tank 1 for recovering the refrigerant vapor is provided around the outer periphery of the medium-concentration absorption liquid separation cylinder 12.
0 is provided.

Above the surrounding wall-shaped container portion 110 of the heating tank 11, a low-concentration absorbent flow path L3 connected to the absorber 3 to be described later is provided therethrough. Has an opening at a lower portion in the surrounding wall-shaped container portion 110.

Therefore, the low-concentration absorbing liquid supplied from the absorber 3 through the low-concentration absorbing liquid flow path L3 to which the absorbing liquid pump P1 is attached is supplied to the heating tank 11 at the lower part of the surrounding wall-shaped container 110. When the gas flows from the lower part to the upper part of the surrounding wall-shaped container part 110, it is heated by exchanging heat with the combustion gas of the gas burner B, and is further discharged while rising the ceiling container part 112 and the cylindrical heating part 113. The fuel is heated by the combustion gas passing through the cylinder 114.

The low-temperature regenerator 2 has a vertical cylindrical low-temperature regenerator case 20 eccentrically installed above and around the refrigerant recovery tank 10 and through which the exhaust pipe 114 penetrates. The low-temperature regenerator case 20 is provided with a refrigerant vapor outlet 5A on the ceiling and a medium-concentration absorbing liquid supply chamber 201 provided surrounding the outside of the top exhaust tube 114. The medium-concentration absorbing liquid channel L1 connected to the medium-absorbing liquid chamber 115 is opened, and the medium-concentration absorbing liquid supplied from the medium-concentration absorbing liquid passage L1 The liquid is dropped to the outside of the refrigerant recovery tank 10 through the absorbing liquid outlet 21. Accordingly, the medium-concentration absorbing liquid supplied into the medium-concentration absorbing liquid supply chamber 201
The reheat is performed using both the sensible heat of the combustion gas transmitted through the heat exchanger 4 and the latent heat of the refrigerant vapor transmitted through the outer wall of the refrigerant recovery tank 10 as heating sources.

In the low-temperature regenerator case 20, the medium-concentration absorbent is supplied via the heat exchanger H by a pressure difference between the high-concentration regenerator 1 and the medium-concentration absorbent separation tube 12, and the low-temperature regenerator 2
Is the refrigerant recovery tank 10 and the exhaust stack 114 as described above.
The intermediate-concentration absorbing liquid is heated through each outer wall to boil again, and the refrigerant vapor is separated into a high-concentration absorbing liquid.

On the outer periphery of the low-temperature regenerator case 20, a vertical cylindrical airtight evaporation / absorption case 30 is arranged concentrically, and the evaporation / absorption case 30 is extended upward and the upper part is a condenser case. It is 50.

Refrigerant recovery tank 10, low temperature regenerator case 2
0, the evaporation / absorption case 30 is integrally welded to the bottom plate 13 to form the refrigerator main body 101. The upper part of the low-temperature regenerator case 20 is a gas-liquid separation part 22 and communicates with the inside of the condenser case 50 via the refrigerant vapor outlet 5A.

The absorber 3 is provided with a cooling coil 31 wound in a vertical cylindrical shape inside an inner portion of the evaporating / absorbing case 30, and for spraying the high-concentration absorbing liquid to the cooling coil 31 above the cooling coil 31. Is attached. The absorber 3 is used during the cooling operation, and the cooling water for exhaust heat cooled by the cooling tower CT is circulated in the cooling coil 31.

The high concentration absorbent receiving portion 23 of the low temperature regenerator 2
Is connected to the high-concentration absorbent flow path L2 through the heat exchanger H,
It is connected to the high-concentration absorbent sprayer 32. The high-concentration absorbent is sprayed on the upper end of the cooling coil 31 and adheres to the surface of the cooling coil 31 to form a film. It flows down by the action. Bottom 33 of absorber 3 and heating tank 11
Is connected by a low-concentration absorbent flow path L3 to which a heat exchanger H and an absorbent pump P1 are mounted.

The evaporator 4 is provided with a vertical cylindrical partition wall 40 having a communication port around the outer periphery of the cooling coil 31 in the evaporator / absorber case 30. A vertical cylindrical evaporation coil 41 through which water flows is provided,
A refrigerant liquid dispersing tool 42 is attached above it. The bottom 43 of the evaporator 4 communicates with the cylindrical heating section 113 of the high-temperature regenerator 1 through a heating absorbent flow path L4 having a heating solenoid valve V1.

The coolant sprayer 42 is used during the cooling operation, and drops coolant on the evaporating coil 41. The dropped refrigerant wets the surface of the evaporating coil 41 by surface tension, becomes a film, and descends downward due to the action of gravity, and takes the vaporization heat from the evaporating coil 41 in the evaporating / absorbing case 30 at a low pressure. Then, the cooling and heating water for cooling and heating flowing in the evaporation coil 41 is cooled.

The condenser 5 is used during a cooling operation, and has a cooling coil 51 in which cooling water for exhaust heat circulated in the cooling tower CT is circulated inside the condenser case 50. . The condenser case 50 communicates with the bottom portion 14 of the refrigerant recovery tank 10 through the refrigerant flow path L5, and communicates with the low-temperature regenerator 2 through the refrigerant vapor outlet 5A. .

The refrigerant supplied to the condenser case 50 is cooled by the cooling coil 51 and liquefied. The lower part of the condenser 5 and the refrigerant liquid disperser 42 installed above the evaporator coil 41 of the evaporator 4 communicate with each other through a refrigerant liquid supply path L6.
The liquefied refrigerant liquid is supplied to the refrigerant liquid sprayer 42 through the refrigerant cooler 52 provided in the refrigerant liquid supply path L6.

In this embodiment, the cooling coil 31 is connected to the cooling coil 51, and the cooling tower CT and the cooling water flow path 34
Connected by A cooling water pump P
2, the cooling water heated to a high temperature by absorbing heat in the cooling coil 31 and the cooling coil 51 is supplied to the cooling tower CT to form an exhaust heat cycle in which the cooling water is radiated to the atmosphere and cooled to a low temperature.

During the cooling operation, the cooling water is supplied from the cooling tower CT to the cooling coil 31 to the cooling coil 5 by the cooling water pump P2.
1 → the cooling tower CT. The absorbing liquid is
It circulates in the order of high temperature regenerator 1 → low temperature regenerator 2 → absorber 3 → absorbent pump P1 → high temperature regenerator

The indoor unit 200 has an air conditioning heat exchanger 44 and a blower 45. Both ends of the evaporating coil 41 are connected to the air-conditioning heat exchanger 4 by a cold / hot water flow path 46 formed by a rubber hose or the like.
4. The cold / hot water flow path 46 is provided with a cold / hot water pump P3 for circulating cold / hot water through the air-conditioning heat exchanger 44.

During the heating operation, the heating electromagnetic valve V1 is opened and the absorption liquid pump P1 is operated. The high-temperature medium-concentration absorbing liquid flows into the evaporator 4 from the bottom 43. Evaporation coil 41
The cold and hot water inside is heated and supplied to the air-conditioning heat exchanger 44 in the indoor unit 200 through the cold and hot water flow path 46 by the cold and hot water pump P3 to serve as a heat source for heating. The medium-concentration absorbent in the evaporator 4 enters the absorber 3 through the communication port of the partition wall 40, and is returned to the heating tank 11 by the absorbent pump P1 via the low-concentration absorbent flow path L3.

Since the user stops the air conditioning, the indoor unit 20
When the operation is stopped by the on / off switch of 0,
The absorption refrigeration apparatus 100 requires a dilution operation to prevent crystallization of the absorption liquid for a certain period of time even after the operation of the indoor unit 200 is stopped. Therefore, after the combustion of the gas burner B is stopped, the absorption liquid pumps P1 and P1 The cooling water pump P2 stops after the end of the dilution operation.

The absorption refrigeration system 100 having the above configuration
When the gas burner B burns, the combustion gas heats the absorption liquid in the surrounding wall-shaped container portion 110 of the heating tank 11, and when the absorption liquid temperature detected by an absorption liquid thermistor (not shown) reaches 100 ° C. , The driving of the absorbing liquid pump P1 is started,
A low concentration absorbing solution is supplied into the inside.

In the heating tank 11, the low concentration absorbing liquid is
While moving not only the surrounding wall-shaped container part 110 but also the ceiling container part 112 and the cylindrical heating part 113, heat exchange with the combustion gas of the gas burner B is performed via the inner wall of the cylindrical heating part 113 and the heat absorbing fins 113a. And the refrigerant vapor is separated from the heated absorption liquid. On the other hand, the medium-concentration absorbing liquid in which the refrigerant vapor has been separated and condensed moves over the upper end of the outer wall of the cylindrical heating section 113 and moves to the absorbing liquid chamber 115 inside the medium-concentration absorbing liquid separating cylinder 12, where The liquid is supplied to the low-temperature regenerator 2 through the liquid exchanger L1 and the heat exchanger H. The refrigerant vapor separated from the low-concentration absorbent is deprived of latent heat by the outer wall of the refrigerant recovery tank 10 in the refrigerant recovery tank 10, condensed, passes through the bottom 14 outside the middle-concentration absorbent separation cylinder 12, and flows through the refrigerant flow. It is supplied to the condenser 5 through the line L5.

The medium-concentration absorbing liquid supplied to the low-temperature regenerator 2 is heat-exchanged by the high-temperature regenerator 1 in the medium-concentration absorbing liquid supply chamber 201, absorbed, and then burned by the gas burner B passing through the exhaust stack 114. The gas is reheated by the sensible heat of the gas and the latent heat in the refrigerant recovery tank 10 via the exhaust stack 114 and the outer wall of the refrigerant recovery tank 10 to separate the refrigerant vapor. The separated refrigerant vapor passes through the refrigerant vapor outlet 5A and passes through the condenser 5
Supplied to The high-concentration absorbing liquid in which the refrigerant vapor is separated and concentrated in the low-temperature regenerator 2 is stored in the high-concentration absorbing liquid receiving portion 23, passes through the high-concentration absorbing liquid flow path L2, and has a high concentration absorbing liquid in the absorber 3. It is supplied to the spraying tool 32.

In the condenser 5, the refrigerant vapor is cooled and liquefied and supplied to the evaporator 4. In the evaporator 4, when the refrigerant liquid evaporates, heat is taken from the cold and hot water of the evaporating coil 41, and the cold and hot water whose temperature has dropped becomes a cooling source. The evaporator 4 and the absorber 3 communicate with each other. When the high-concentration absorbing liquid is supplied, the absorber 3 absorbs the refrigerant vapor evaporated by the evaporator 4 and becomes a low-concentration absorbing liquid. It is returned to the high temperature regenerator 1 by the pump P1, and thereafter, this circulation is repeated.

As described above, in this embodiment, the gas burner B
The combustion gas not only heats the low concentration absorbent in the heating tank 11 of the high temperature regenerator 1 but also heats the medium concentration absorbent in the low temperature regenerator 2 when passing through the exhaust stack 114. Act as Accordingly, the heat of the combustion gas of the gas burner B not only heats the high-temperature regenerator 1 but also discharges the exhaust gas 114 after the high-temperature regenerator 1 is heated.
Since the heat of the combustion gas is reused also in the low-temperature regenerator 2 having the inside inserted therein, the efficiency of comprehensive heat absorption by the high-temperature regenerator 1 and the low-temperature regenerator 2 is high.

The high-temperature regenerator 1 also absorbs heat in the cylindrical heating section 113, so that the heat exchange area is widened, the load due to heat absorption in the surrounding wall-shaped container section 110 is reduced, and durability against thermal fatigue and high-temperature corrosion is achieved. Is improved. As a result, the efficiency of heat absorption can be improved without increasing the load for improving the durability of the surrounding wall-shaped container portion 110.

The low-temperature regenerator 2 is provided with a sensible heat of the combustion gas of the gas burner B passing through the exhaust stack 114 and the high-temperature regenerator 1.
Since the plurality of heating sources are also used by utilizing the latent heat of the refrigerant vapor in the refrigerant recovery tank 10, there is a margin for heat absorption in the low-temperature regenerator 2, the degree of freedom in designing the heat absorption structure is increased, and an inexpensive device is used. Can be. If heat absorbing fins are provided also in the exhaust pipe 114 inserted through the medium concentration absorbing liquid supply chamber 201 of the low temperature regenerator 2, the amount of sensible heat absorbed by the combustion gas increases.
Further, the efficiency is improved.

FIG. 3 shows a modification of the present invention. In this modification, the exhaust stack 114 is not penetrated through the high-temperature regenerator 1, and the high-temperature regenerator 1 is heated and heated.
The combustion gas that has flowed out of the exhaust gas is discharged using the exhaust pipe 114 inserted into the low-temperature regenerator 2. Therefore, in this modified example, the durability against thermal fatigue in the high-temperature regenerator 1 is not improved, but the efficiency of heat exchange is improved as in the above embodiment.

In the above embodiment, the heating source is
Instead of the gas burner B, another heat source such as an oil burner or an electric heater can be used.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a cooling and heating device using an absorption refrigeration device.

FIG. 2 is a partial sectional view showing a gas burner and a heating tank of the absorption refrigeration system.

FIG. 3 is a partial cross-sectional view showing a modification of the gas burner and the heating tank of the absorption refrigeration system.

FIG. 4 is a conceptual diagram of a cooling and heating device using a conventional absorption refrigeration device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Absorption refrigerating device B Gas burner (heating means) 1 High temperature regenerator 10 Refrigerant recovery tank 11 Heating tank 110 Surrounding wall-shaped container part 114 Exhaust tube (heated gas discharge passage) 2 Low temperature regenerator 3 Absorber 4 Evaporator P1 Absorption Liquid pump L3 Low concentration absorbent flow path

Claims (3)

[Claims] In a regenerator heated by a heating means, a low-concentration absorbent is separated into a high-concentration absorbent and a refrigerant. In an evaporator, a refrigerant flows into an evaporator coil through which cold and hot water flows as a heating medium for air conditioning. Spraying the liquid and evaporating it and cooling the cold and hot water, the absorber is connected to a cooling tower, and the high-concentration absorbing liquid is sprayed on a cooling coil through which cooling water for exhaust heat flows. Absorbent liquid refrigerating device that absorbs the evaporated refrigerant and returns the low-concentration absorbent liquid that has absorbed and reduced the concentration of the refrigerant to the regenerator by the absorbent pump provided in the low-concentration absorbent flow path. A high-temperature regenerator that heats the low-concentration absorbent by the heat of the gas to be heated heated by the heating means and separates the low-concentration absorbent into a medium-concentration absorbent and a refrigerant vapor; The heated gas of A heated gas discharge passage for discharging is inserted into the inside, and the medium-concentration absorbent separated by the high-temperature regenerator is heated by the heat of the heated gas passing through the heated gas discharge passage, so that the high-concentration absorbent is heated. An absorption refrigeration system comprising a low-temperature regenerator for separating liquid and refrigerant vapor. 2. The low-temperature regenerator is provided outside a refrigerant recovery tank that recovers refrigerant vapor generated in the high-temperature regenerator, and latent heat of the refrigerant vapor generated in the high-temperature regenerator and sensible heat of the gas to be heated are provided. 2. The absorption refrigeration system according to claim 1, wherein both of them are heating sources. 3. The heating device according to claim 1, wherein the heating means is a gas burner that burns gas as fuel, and the heated gas is a combustion gas of the gas burner.
2. The absorption refrigeration apparatus according to 1.