JP2016023807A - Air-conditioning system and air-conditioning method using thermoacoustic refrigerating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with a refrigerating machine using a compressor and a cooling tower, greatly reduce the size of equipment, save equipment cost, save power consumption, and suppress a regional urban heat island phenomenon and the like.SOLUTION: A thermoacoustic refrigerating machine 14 is provided in place of a refrigerating machine using a compressor and a cooling tower. High-temperature exhaust gas G from a boiler 4 is supplied to the thermoacoustic refrigerating machine 14, a temperature difference necessary to produce sound (sound energy) from a heat energy contained in this high-temperature exhaust gas G is created, a new temperature difference is created by the sound produced by the former temperature difference to generate cold water at 7°C, and this cold water is supplied to a cold water coil 1-2 of an air conditioner 1. The exhaust gas whose temperature falls by energy conversion in the thermoacoustic refrigerating machine 14 is released into the atmosphere as low-temperature exhaust gas G'.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an air conditioning system and an air conditioning method using a thermoacoustic refrigerator that generates cold by converting sound energy into thermal energy.

  The structure of the principal part of the conventional air conditioning system is shown in FIG. 6 (for example, refer to Patent Documents 1 and 2). This air conditioning system includes an air conditioner 1, a refrigerator 2, a cooling tower 3, a boiler 4, a cold water pump 5, a cooling water pump 6, a feed water pump 7, a return water tank 8, a cold water valve 9, A heating valve 10 and a humidification valve 11 are provided. The air conditioner 1 includes a filter 1-1, a cold water coil 1-2, a heating coil 1-3, a humidifier 1-4, and a fan 1-5.

  In this air conditioning system, during the cooling operation, the refrigerator 2 generates 7 ° C. cold water. The cold water generated by the refrigerator 2 is sent to the cold water coil 1-2 of the air conditioner 1 through the cold water valve 9 by the cold water pump 5 to cool the surrounding air. The cooled air is blown by the fan 1-5 and sent to the control target space (inside the room) through the air supply duct 12. Then, the air in the controlled space that has increased in temperature and contributed to the cooling of the controlled space is returned to the air conditioner 1 through the return air duct 13, cooled again by the cold water coil 1-2, and passed through the air supply duct 12. It is sent to the controlled space.

  On the other hand, the cold water sent to the cold water coil 1-2 becomes warm water of 12 ° C. and is returned to the refrigerator 2. And in the refrigerator 2, after cooling to 7 degreeC, it is sent to the cold water coil 1-2 again. Further, the heat generated in the compressor inside the refrigerator 2 is discharged to the atmosphere via the cooling tower 3. At this time, the cooling water generated in the cooling tower 3 is returned to the refrigerator 2 by the cooling water pump 6.

  In this air conditioning system, during heating operation, the boiler 4 receives supply of city gas, generates steam, is sent to the heating coil 1-3 of the air conditioner 1 through the heating valve 10, and warms the surrounding air. . This warmed air is blown by the fan 1-5 and sent to the control target space (inside the room) through the air supply duct 12. The air in the control target space, which has contributed to the heating of the control target space and the temperature has dropped, is returned to the air conditioner 1 through the return air duct 13, heated again by the heating coil 1-3, and passed through the air supply duct 12. It is sent to the controlled space.

  On the other hand, the steam sent to the heating coil 1-3 is returned to water and stored in the return water tank 8. And it is returned to the boiler 4 by the feed water pump 7, is made into steam in the boiler 4, and is sent again to the hot water coil 1-3.

  The steam generated in the boiler 4 is also sent to the humidifier 1-4 of the air conditioner 1 through the humidification valve 11. Further, the high-temperature combustion gas generated when the steam is generated in the boiler 4 is released to the atmosphere as exhaust gas (high-temperature exhaust gas) G.

  Recently, the temperature of exhaust gas discharged from the boiler 4 is limited to 170 ° C. to 250 ° C. by the Energy Saving Law (hereinafter, energy saving is abbreviated as energy saving). Fig. 7 shows the standard exhaust gas temperature for boilers stipulated in the Energy Conservation Law ("Criteria for Employer's Judgment Regarding Rationalization of Energy Use in Factories or Works" (Energy Conservation Law) ... Ministry of Economy, Trade and Industry Notification No. 65 (Excerpt)).

JP-A-8-271018 JP 2006-284083 A JP 2006-266571 A JP 2007-155167 A JP 2007-147192 A JP 2010-71559 A JP 2000-88378 A JP 2004-534195 A JP 2012-73011 A JP2012-167919A JP 2006-118728 A

“Sendai City Gas Bureau”, “Types of Boilers and Heaters”, [Search July 9, 2014], Internet <http://www.gas.city.sendai.jp/biz/boilers/01/index. php> “MiSUMi”, “Technical Course for Engineers”, [searched on July 9, 2014], Internet, <http://koza.misumi.jp/surface/2006/10/273.html>

However, the conventional air conditioning system described above has the following problems.
(1) Refrigerator and cooling tower facilities are large, and investment and maintenance cost. Power consumption is also large.
(2) Add heat to the local hot island phenomenon in order to discharge heat from the cooling tower to the atmosphere.
(3) Since chlorofluorocarbon is used in the refrigerator, it is not friendly to the global environment.
(4) Since the exhaust gas from the boiler is also released into the atmosphere, it adds to the local hot island phenomenon, just like a cooling tower. Also, it is not good in terms of energy saving.

  The present invention has been made in order to solve such problems. The object of the present invention is to eliminate the need for a refrigerator and a cooling tower using a compressor, greatly downsize equipment, and save capital investment. Another object of the present invention is to provide an air conditioning system and an air conditioning method using a thermoacoustic refrigerator capable of saving power consumption and suppressing local hot island phenomenon.

  In order to achieve such an object, the present invention is directed to a thermoacoustic refrigerator that generates sound of cold by converting sound energy into heat energy, and is supplied with the cold generated by the thermoacoustic refrigerator to a control target space. And an air conditioner that generates conditioned air during cooling.

  In the present invention, the thermoacoustic refrigerator generates cold by converting sound energy into heat energy. The cold heat generated by the thermoacoustic refrigerator is supplied to the air conditioner. The air conditioner generates harmonized air during cooling to the control target space from the cold heat supplied from the thermoacoustic refrigerator.

  In recent years, research on thermoacoustic cooling technology has been actively conducted, and a refrigerator using this thermoacoustic cooling technology has been put into practical use. In the present invention, cold heat supplied to the air conditioner is generated using a thermoacoustic refrigerator that is the result of research on this thermoacoustic cooling technology.

  According to the present invention, in a thermoacoustic refrigerator, sound energy is converted into thermal energy to generate cold heat, and the cold heat generated by the thermoacoustic refrigerator is supplied to the air conditioner. The conditioned air generated during cooling to the controlled space is generated from the cold heat supplied from the compressor, eliminating the need for refrigerators and cooling towers that use compressors, greatly reducing equipment and making capital investments It is possible to save. In addition, power consumption can be greatly saved as compared with the case of using a refrigerator or a cooling tower using a compressor.

  In addition, according to the present invention, since the thermoacoustic refrigerator is used, it is possible to eliminate the use of Freon gas and to be friendly to the global environment. In addition, there are no moving parts such as a motor and a fan, and the life of the equipment is extended. In addition, the exhaust heat of the cooling tower is not discharged to the atmosphere, and the local hot island phenomenon can be suppressed.

  Further, in the present invention, when a boiler is installed as a heater for heating, if the sound energy in the thermoacoustic refrigerator is made using the high-temperature exhaust gas from the boiler, the high-temperature exhaust gas from the boiler It is possible to reduce the temperature of the gas and release it into the atmosphere as low-temperature exhaust gas, thereby saving energy and suppressing the local hot island phenomenon.

It is a figure which shows the structure of the principal part of one Embodiment of the air conditioning system which concerns on this invention. It is a figure which shows the principal part of the thermoacoustic refrigerator used with this air conditioning system, and the power of the sound wave conveyed from a sound generator to a refrigerator. It is the schematic of a drum type boiler. It is the schematic of a water tube type boiler. It is an enlarged view of the supply part to the thermoacoustic refrigerator of the hot exhaust gas from a boiler. It is a figure which shows the structure of the principal part of the conventional air conditioning system. It is a figure which shows the reference | standard exhaust gas temperature regarding the boiler defined by the energy-saving law.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of a main part of an embodiment of an air conditioning system according to the present invention. In FIG. 6, the same reference numerals as those in FIG. 6 denote the same or equivalent components as those described with reference to FIG.

  In recent years, research on thermoacoustic cooling technology has been actively conducted, and a refrigerator using this thermoacoustic cooling technology has been put into practical use. Thermoacoustic cooling is a technology in which sound is generated by the self-excited oscillation of air in a thin pipe due to a temperature difference, and a new temperature difference is created with that sound to obtain a cooling effect. Although detailed explanation about the principle of thermoacoustic cooling is omitted, there are already practical examples of applications in fields such as automobiles and agriculture (see, for example, Patent Documents 3 to 11).

  In this Embodiment, the cold water supplied to an air conditioner is produced | generated using the thermoacoustic cooling refrigerator which is the result of research of this thermoacoustic cooling technique. Specifically, as shown in FIG. 1, a thermoacoustic refrigerator 14 is used as a refrigerator using a thermoacoustic cooling technique instead of a refrigerator or a cooling tower using a compressor used in a conventional air conditioning system. Is provided.

  Further, a high-temperature combustion gas (high-temperature exhaust gas) G that has been conventionally released into the atmosphere as exhaust gas from the boiler 4 is supplied to the thermoacoustic refrigerator 14, and sound (sound energy) is generated from the thermal energy contained in the high-temperature exhaust gas G. ), A new temperature difference is created with the sound produced by this temperature difference to produce 7 ° C. cold water, and this cold water is supplied to the cold water coil 1-2 of the air conditioner 1 Like that.

  Further, in the thermoacoustic refrigerator 14, the exhaust gas having a low temperature due to conversion from thermal energy to sound energy is released to the atmosphere as a low-temperature exhaust gas G '.

  The principal part of the thermoacoustic refrigerator 14 is shown to Fig.2 (a). The thermoacoustic refrigerator 14 has a cylindrical shape, and includes three parts, a sound wave generator 15, a sound wave propagation path 16, and a refrigerator 17.

  The sound wave generator 15 includes a high temperature end 15-1 that is in a high temperature state, a low temperature end (low temperature end A (first low temperature end)) 15-2 that is in a low temperature state, a high temperature end 15-1, and a low temperature end. And a stack (stack A (first stack)) 15-3 sandwiched between 15-2. The stack 15-3 is a bundle of hundreds of thin pipes having a diameter of about 0.1 mm that are bundled in parallel.

  The freezer 17 includes a low temperature end (low temperature end B (second low temperature end)) 17-1 that is in a low temperature state, and a freezing end 17-2 that is in a lower temperature state than the low temperature end 17-1. It is comprised from the stack (stack B (2nd stack)) 17-3 pinched | interposed between the low temperature end 17-1 and the freezing end 17-2. Similar to the stack 15-3, the stack 17-3 is formed by bundling several hundred thin pipes having a diameter of about 0.1 mm in parallel.

  The sound wave propagation path 16 is a sound wave transport path from the sound wave generator 15 to the refrigerator 17, and is sandwiched between the low temperature end 15-2 of the sound wave generator 15 and the low temperature end 17-1 of the refrigerator 17. ing.

  In this thermoacoustic refrigerator 14, the high temperature state of the high temperature end 15-1 is a high temperature exhaust gas G sent from the boiler 4 of 170 ° to 250 ° C., that is, 170 ° to 250 ° C. that has been released to the atmosphere in the past. The hot exhaust gas G is produced by supplying it to the hot end 15-1. The cold state of the cold ends 15-2 and 17-1 is created by supplying approximately 20 ° C. water to the cold ends 15-2 and 17-1. The freezing end 17-2 is supplied with 12 ° C. warm water returned from the cold water coil 1-2, that is, cold heat returned from the cold water coil 1-2 as 12 ° C. hot water.

  In the present embodiment, the low temperature ends 15-2 and 17-1 are connected to the building tap water piping, and the tap water always flowing through the tap water piping is supplied to the low temperature ends 15-2 and 17-1. By doing so, the temperature of the low temperature ends 15-2 and 17-1 is maintained at a constant value. Thus, if the tap water always flowing in the tap water pipe is used, a dedicated pump is not required for the circulation of the water. In this example, the tap water that has passed through the low temperature end 15-2 is sent to the low temperature end 17-1, and a single tap water flow is shared, but tap water is supplied from independent tap water pipes. You may make it do.

  In the present embodiment, the boiler 4 may be of any type as long as it emits high-temperature exhaust gas G when generating steam. For example, there are many types of boilers such as a drum type and a water tube type. In these boilers, it is common to discharge exhaust gas after combustion to the atmosphere.

  For example, in a drum-type boiler, as shown schematically in FIG. 3 (see Non-Patent Document 1), water is stored in the drum, a combustion chamber and a number of smoke pipes are provided therein, and When the combustion gas passes through a large number of smoke pipes, water is heated to generate steam. The combustion gas that has passed through the smoke pipe is released to the atmosphere as high-temperature exhaust gas G.

  In the case of a water tube type boiler (through-flow boiler), as shown schematically in FIG. 4 (see Non-Patent Document 2), the water fed to the boiler water tube by the feed water pump is preheated in an exhaust heat recovery unit called a economizer. Is done. Next, while the boiler combustion chamber progresses from the lowest temperature to the highest temperature, it boils in the pipe, and water and steam coexist. This is guided to the steam separator, and the water falls by gravity and returns to the water supply pump. The steam from which the moisture has been separated is further heated to become “heated steam”, which is sent to the object to be heated through the main steam valve. The combustion gas that has passed through the evaporator, the heater, and the economizer is released to the atmosphere as high-temperature exhaust gas G.

  In the present embodiment, a high-temperature exhaust gas G of 170 to 250 ° C. from such a drum-type or water-tube boiler 4 is supplied to the high-temperature end 15-1 of the thermoacoustic refrigerator 14, and the low-temperature end 15-2. Supply tap water at about 20 ° C.

  By supplying the high-temperature exhaust gas G of 170 ° C. to 250 ° C. to the high temperature end 15-1 and supplying tap water of about 20 ° C. to the low temperature end 15-2, A temperature difference of 150 ° C. or more is formed between the low temperature end 15-2.

  The temperature difference between the high temperature end 15-1 and the low temperature end 15-2 makes the air in the pipe of the stack 15-3 unstable, and a cycle of “compression → heating → expansion → cooling” is performed. Occur. Sound is generated by the repeated compression and expansion of the air.

  In the sound wave generator 15, the thermal energy of the high-temperature exhaust gas G from the boiler 4 supplied to the high-temperature end 15-1 is accumulated in the stack 15-3 and converted into sound energy. As a result, the exhaust gas emerging from the high temperature end 15-1 becomes a low temperature exhaust gas G 'whose temperature has been greatly reduced. Moreover, the heat of the high temperature end 15-1 does not move to the low temperature end 15-2. Therefore, two effects of sound generation and low temperature of the high temperature exhaust gas G are obtained at the high temperature end 15-1.

  As described above, there are many types of boilers such as a drum type and a water tube type, but it is common to discharge exhaust gas after combustion to the atmosphere. The temperature of the exhaust gas is as high as 170 ° C to 250 ° C even if the regulations of the Energy Saving Act are observed. Reusing the thermal energy of the exhaust gas will save energy and be friendly to the earth. In the thermoacoustic refrigerator 14 of the present embodiment, this exhaust gas is reused.

  FIG. 5 shows an enlarged view of the supply portion of the high-temperature exhaust gas G from the boiler 4 to the thermoacoustic refrigerator 14. As shown in this enlarged view, in the present embodiment, a hot exhaust gas G having a high temperature of 170 ° to 250 ° C. that is normally discharged from the chimney of the boiler 4 is connected to a high temperature end 15-of the thermoacoustic refrigerator 14 by a pipe L. Lead to one.

  At the high temperature end 15-1, the pipe L is formed in a spiral shape, and when passing through the spiral pipe L, the air at the high temperature end 15-1 is heated by the heat. One side of the stack 15-3 is warmed with hot air at the high temperature end 15-1, and a temperature difference is formed with the low temperature end 15-2 to generate sound.

  The thermal energy of the high temperature exhaust gas G moves from the high temperature end 15-1 to the stack 15-3, and is converted into sound energy in the stack 15-3. The exhaust gas from which heat has been removed becomes low-temperature exhaust gas G 'and is released to the atmosphere. Thereby, two purposes of energy saving and global environmental protection are achieved.

  The sound generated by the sound wave generator 15 is conveyed to the refrigerator 17 through the sound wave propagation path 16. In the present embodiment, both ends 14A and 14B of the thermoacoustic refrigerator 14 are terminated, and sound waves are reflected. As a result, a standing wave is formed in the sound wave propagation path 16 and resonance of the sound wave is generated (see FIG. 2B).

  The purpose of resonating this sound wave is to send sound energy to the refrigerator 17 with maximum efficiency. In order to receive the energy of the propagated sound with maximum efficiency, the refrigerator 17 is installed at a half of the sound wave wavelength λ, which is the highest point of the sound wave amplitude.

  In the freezer 17, when the sound sent from the sound wave generator 15 through the sound wave propagation path 16 as the transport path enters the stack 17-3, the air in the pipes of the stack 17-3 becomes unstable, and the stack 15- Contrary to 3, a cycle of “compression → cooling → expansion → heating” occurs.

  As a result, a heat pump phenomenon occurs in the stack 17-3, and the heat of the freezing end 17-2 moves toward the low temperature end 17-1. The movement of the heat of the freezing end 17-2 to the low temperature end 17-1 causes the temperature of the freezing end 17-2 to be lower than that of the low temperature end 17-1 (it can be lowered to 0 ° C. or lower). In this case, since the 12 ° C. warm water returned from the air conditioner 1 is supplied to the freezing end 17-2, the warm water is cooled to 7 ° C. and supplied to the air conditioner 1 as cold water.

  Thus, according to the air conditioning system of the present embodiment, the thermoacoustic refrigerator 14 having a simple configuration can be used without using a refrigerator or a cooling tower using a compressor used in the conventional air conditioning system. It becomes possible to generate cold water to be supplied to the air conditioner 1 using. As a result, the facility can be greatly reduced in size and the capital investment can be saved. In addition, power consumption can be greatly reduced as compared with the case of using a refrigerator or a cooling tower using a compressor.

  Further, according to the present embodiment, since the thermoacoustic refrigerator 14 is used, it is possible to eliminate the use of Freon gas and to be friendly to the global environment. In addition, there are no moving parts such as a motor and a fan, and the life of the equipment is extended. In addition, the exhaust heat of the cooling tower is not discharged to the atmosphere, and the local hot island phenomenon can be suppressed.

  In the present embodiment, the sound energy in the thermoacoustic refrigerator 14 is generated using the high-temperature exhaust gas G from the boiler 4, the temperature of the high-temperature exhaust gas G from the boiler 4 is lowered, and the low-temperature exhaust gas is produced. Since G ′ is released to the atmosphere, it is possible to save energy and further suppress the local hot island phenomenon.

  In the above-described embodiment, steam is supplied to the air conditioner 1 as hot heat, but hot water may be supplied to the air conditioner 1 as hot heat. That is, in the present invention, the heater is not limited to a boiler that generates steam, and may be a hot water generator that generates hot water.

  Further, when the boiler is not installed or is not operating, another method can be used. For example, heat may be applied to the high temperature end 15-1 of the thermoacoustic refrigerator 14 with a solar heat collector, or exhaust heat from a co-generator or a private generator may be used.

[Extension of the embodiment]
The present invention has been described above with reference to the embodiment. However, the present invention is not limited to the above embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the technical idea of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Air conditioner, 4 ... Boiler, 14 ... Thermoacoustic refrigerator, 15 ... Sound wave generator, 15-1 ... High temperature end, 15-2 ... Low temperature end (low temperature end A (1st low temperature end)), 15- DESCRIPTION OF SYMBOLS 3 ... Stack (stack A (1st stack)), 16 ... Sound wave propagation path, 17 ... Freezer, 17-1 ... Low temperature end (low temperature end B (2nd low temperature end)), 17-2 ... Freezing end , 17-3: Stack (stack B (second stack)), G: high temperature exhaust gas, G ′: low temperature exhaust gas.

Claims (8)

A thermoacoustic refrigerator that converts sound energy into heat energy to generate cold energy;
An air conditioning system using a thermoacoustic refrigerator, comprising: an air conditioner that receives supply of cold heat generated by the thermoacoustic refrigerator and generates conditioned air during cooling of the control target space. In the air conditioning system using the thermoacoustic refrigerator according to claim 1,
Equipped with a heater to generate heat,
The air conditioner
Receiving the supply of warm heat generated by the heater to generate conditioned air during heating to the control target space,
The thermoacoustic refrigerator is
An air conditioning system using a thermoacoustic refrigerator that receives supply of exhaust gas generated when generating the thermal heat from the heater and generates the sound energy from thermal energy contained in the exhaust gas. In the air conditioning system using the thermoacoustic refrigerator according to claim 1,
The thermoacoustic refrigerator is
A sound wave generator comprising a high temperature end to be in a high temperature state, a first low temperature end to be in a low temperature state, and a first stack sandwiched between the high temperature end and the first low temperature end;
A second low temperature end that is in a low temperature state, a refrigeration end that is further in a lower temperature state than the second low temperature end, and a second stack sandwiched between the second low temperature end and the refrigeration end A freezer consisting of
A sound wave propagation path sandwiched between the first low-temperature end and the second low-temperature end, which serves as a sound wave transport path from the sound wave generator to the refrigerator,
The thermoacoustic refrigerator, wherein the low temperature state of the first low temperature end and the second low temperature end is maintained by supplying tap water to the first low temperature end and the second low temperature end. The air conditioning system used. In the air conditioning system using the thermoacoustic refrigerator according to claim 1,
Equipped with a heater to generate heat,
The air conditioner
Receiving the supply of warm heat generated by the heater to generate conditioned air during heating to the control target space,
The thermoacoustic refrigerator is
A sound wave generator comprising a high temperature end to be in a high temperature state, a first low temperature end to be in a low temperature state, and a first stack sandwiched between the high temperature end and the first low temperature end;
A second low temperature end that is in a low temperature state, a refrigeration end that is further in a lower temperature state than the second low temperature end, and a second stack sandwiched between the second low temperature end and the refrigeration end A freezer consisting of
A sound wave propagation path sandwiched between the first low-temperature end and the second low-temperature end, which serves as a sound wave transport path from the sound wave generator to the refrigerator,
The high temperature state of the high temperature end is created by supplying exhaust gas to the high temperature end when generating the heat from the heater,
The cold state of the first cold end and the second cold end is maintained by supplying tap water to the first cold end and the second cold end,
The low temperature state of the refrigeration end is created by supplying the cold heat returned from the air conditioner to the cold temperature end and moving the heat taken from the supplied cold heat from the cold temperature end to the second low temperature end. An air conditioning system using a thermoacoustic refrigerator. Converting sound energy into heat energy in a thermoacoustic refrigerator to generate cold heat;
Supplying cold air generated by the thermoacoustic refrigerator to an air conditioner;
The air conditioning method using the thermoacoustic refrigerator, comprising the step of generating conditioned air at the time of cooling the control target space from the cold heat supplied from the thermoacoustic refrigerator in the air conditioner. In the air-conditioning method using the thermoacoustic refrigerator according to claim 5,
Generating heat in the heater;
Supplying the heat generated by the heater to the air conditioner;
Generating conditioned air during heating to the control target space from the heat supplied from the heater in the air conditioner;
Supplying exhaust gas generated when the heater generates the heat to the thermoacoustic refrigerator;
The thermoacoustic refrigerator includes a step of receiving supply of exhaust gas from the heater and generating the sound energy from thermal energy contained in the exhaust gas. Method. In the air-conditioning method using the thermoacoustic refrigerator according to claim 5,
The thermoacoustic refrigerator is
A sound wave generator comprising a high temperature end to be in a high temperature state, a first low temperature end to be in a low temperature state, and a first stack sandwiched between the high temperature end and the first low temperature end;
A second low temperature end that is in a low temperature state, a refrigeration end that is further in a lower temperature state than the second low temperature end, and a second stack sandwiched between the second low temperature end and the refrigeration end A freezer consisting of
A sound wave propagation path sandwiched between the first low-temperature end and the second low-temperature end, which serves as a sound wave transport path from the sound wave generator to the refrigerator,
An air conditioning method using a thermoacoustic refrigerator, comprising: supplying a tap water to maintain a low temperature state of the first low temperature end and the second low temperature end. In the air-conditioning method using the thermoacoustic refrigerator according to claim 5,
Generating heat in the heater;
Supplying the heat generated by the heater to the air conditioner;
Generating conditioned air during heating to the control target space from the heat supplied from the heater in the air conditioner,
The thermoacoustic refrigerator is
A sound wave generator comprising a high temperature end to be in a high temperature state, a first low temperature end to be in a low temperature state, and a first stack sandwiched between the high temperature end and the first low temperature end;
A second low temperature end that is in a low temperature state, a refrigeration end that is further in a lower temperature state than the second low temperature end, and a second stack sandwiched between the second low temperature end and the refrigeration end A freezer consisting of
A sound wave propagation path sandwiched between the first low-temperature end and the second low-temperature end, which serves as a sound wave transport path from the sound wave generator to the refrigerator,
Creating a high temperature state of the high temperature end by supplying exhaust gas generated when generating the heat from the heater to the high temperature end;
Maintaining the cold state of the first cold end and the second cold end by supplying tap water to the first cold end and the second cold end;
Creating a low temperature state of the freezing end by supplying cold heat returned from the air conditioner to the cold temperature end, and transferring heat taken from the supplied cold heat from the freezing end to the second low temperature end; An air conditioning method using a thermoacoustic refrigerator.

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