KR100724701B1 - Air Conditioning Device and Air Conditioning Method Using Fuel Cell - Google Patents

Abstract

An air conditioner using a fuel cell according to the present invention includes a fuel cell for generating electricity and heat by using a fuel and an oxidant so as to realize efficient heating and cooling by using heat generated in a fuel cell, A heat exchanger connected to heat air with heat generated from the fuel cell, a regeneration unit connected to the heat exchanger to regenerate a dehumidifier using air heated in the heat exchanger, and indoor air using the dehumidifier Dehumidifier including a dehumidifying unit for removing the moisture contained in, and the evaporative air conditioner connected to the dehumidifier to cool the air from which the moisture is removed to supply to the room.

Description

Air Conditioning Apparatus and Air Conditioning Method Using Fuel Cell {APPARATUS AND METHOD FOR AIR CONDITION USING FUEL CELL}

1 is a schematic configuration diagram showing an air conditioner using a fuel cell according to the related art.

2 is a schematic diagram illustrating an air conditioner using a fuel cell according to a first embodiment of the present invention.

3 is a schematic diagram illustrating an air conditioner using a fuel cell according to a second exemplary embodiment of the present invention.

4 is a schematic diagram illustrating an air conditioner using a fuel cell according to a third exemplary embodiment of the present invention.

5 is a schematic diagram illustrating an air conditioner using a fuel cell according to a fourth exemplary embodiment of the present invention.

6 is a humid air diagram showing a change in temperature and humidity of air according to the present invention.

The present invention relates to an air conditioning apparatus and an air conditioning method using a fuel cell, and more particularly, to an air conditioning apparatus and an air conditioning method using a fuel cell for realizing heating and cooling using waste heat generated in a fuel cell. will be.

A fuel cell is a device that produces electricity electrochemically using fuel (hydrogen or reformed gas) and oxidant (oxygen or air), and continuously supplies fuel (hydrogen or reformed gas) and oxidant (oxygen or air) from the outside. This is a device for generating electrical energy and thermal energy by electrochemical reactions. As the oxidant of the fuel cell, pure oxygen or air containing a large amount of oxygen is used, and as a fuel, a fuel containing a large amount of hydrogen generated by reforming pure hydrogen or a hydrocarbon-based fuel (LNG, LPG, CH ₃ OH) is used. use.

1 is a schematic configuration diagram showing an air conditioner using a fuel cell according to the prior art.

The air conditioner 101 using the fuel cell uses the fuel 108 containing a large amount of hydrogen generated by reforming the hydrocarbon-based fuel 107 to generate electrical energy and thermal energy by an electrochemical reaction. The air conditioner 101 using the fuel cell is configured to receive a hydrocarbon-based fuel gas 107 to generate a fuel 108 containing a large amount of hydrogen, a reformer 104, an oxidant gas, and a fuel gas to receive an electrochemical reaction. And a fuel cell system 102 composed of a fuel cell 103 that generates electrical energy and thermal energy, a heat storage tank 115 for recovering heat generated by the fuel cell system 102, and the like.

The reformer 104 for reforming a hydrocarbon-based fuel is divided into a reforming unit 106 for reforming fuel and a hydrogen purification unit 105 for removing carbon monoxide. The hydrocarbon-based fuel is converted into a fuel gas containing a large amount of hydrogen by steam reforming, partial oxidation, autothermal reforming, etc. in the reforming unit 106, and the fuel gas is converted into aqueous conversion, selective oxidation method, and separation membrane in the hydrogen purification unit 105. Carbon monoxide is removed to a predetermined level or less through hydrogen purification using the fuel cell 103, and then supplied to the fuel cell 103.

The fuel gas supplied to the fuel cell 103 generates electric energy 110 through an electrochemical reaction, and heat is also generated as a reaction by-product. The heat energy generated by the reformer 104 and the fuel cell 103 is recovered through a device such as a heat exchanger 111 and a heat storage tank 115. Thus, the fuel cell 103 and the waste heat recovery device are configured to generate electricity 110. And a device that can simultaneously use the thermal energy 116 is referred to as a fuel cell generator 101.

Usually, the heat recovered by the fuel cell generator 101 is stored in the heat storage tank 115 and used for heating or hot water supply as necessary. However, in a season when heating load is not required, such as in summer, continuous generation is possible only when heat generated from the fuel cell generator 101 is radiated to the outside without being recovered by the heat storage tank.

To this end, an air-cooled heat exchanger 111 is installed in a portion of the heat recovery pipe to radiate heat 114 through the outside air 112, or a certain amount of water 117 supplied to the heat storage tank 115 flows through the drain valve 118. The method of heat dissipation is mainly used.

However, this method does not recover the waste heat during the summer, not only greatly reducing the cogeneration efficiency but also causing additional power loss and waste of water.

In order to solve the above problems, there have been proposed systems in which a cooler is configured in a fuel cell generator in order to cope with a cooling load during summer. Such a system uses heat recovered from a fuel cell generator for cooling in summer. An air conditioner that consists of a refrigeration cycle consisting of a refrigerating cycle, a regenerator, a condenser, an expansion valve, an evaporator, etc., which separates the liquid absorbent by using a heat source from the reformer itself, and an electricity generated from the fuel cell itself. And a compressed air compressor for driving a compressor to operate a cooling system.

However, when the absorber air conditioner is constructed using the heat from the fuel cell and the reformer, many parts such as the absorber regenerator, the condenser, the expansion valve, the evaporator, the absorbent circulation pump, the internal heat exchanger, the absorbent expansion valve, and the absorbent reservoir are needed. It becomes complicated, the system grows in size, and it is expensive to construct the system.

In addition, the refrigerant flow does not operate at atmospheric pressure, which increases manufacturing costs and requires regular maintenance. Particularly, in the stationary fuel cell power generation system using the polymer electrolyte fuel cell, the heat generated from the fuel cell is about 60 ° C. to 80 ° C., which is suitable for heating in the winter, but low temperature for cooling by using an absorption heat pump in the summer. The need for additional heat sources or equipment increases manufacturing costs and lowers energy efficiency.

In addition, the gas-compressed cooling system, which uses the electricity generated from the fuel cell itself to drive the compressor to cool, does not utilize the heat generated by the fuel cell system composed of the fuel cell and the reformer, but directly uses the electricity produced by the fuel cell. Therefore, there is a problem that the efficiency of the entire power generation device is lowered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a fuel cell power generation apparatus that can realize efficient heating and cooling using heat generated in a fuel cell.

In order to achieve the above object, a fuel cell power generation apparatus according to the present invention includes a fuel cell that generates electricity and heat by using a fuel and an oxidant, and heat that is connected to the fuel cell to heat air with heat generated from the fuel cell. A dehumidifier comprising a exchanger, a regeneration unit connected to the heat exchanger to regenerate a dehumidifying agent to remove moisture using air heated in the heat exchanger, and a dehumidifying unit to remove moisture contained in indoor air using the dehumidifying agent, And an evaporative cooler connected to the dehumidifier to cool the air from which moisture is removed and to supply the room to the room.

The evaporative cooler may be composed of a direct evaporative cooler for cooling the indoor air by latent heat of evaporation by directly spraying water on the indoor air.

The evaporative air conditioner may include a wet channel for injecting water into the air and a dry channel for cooling the indoor air through heat transfer with the wet channel.

The dehumidifier may include a dehumidifying agent made of a solid. In this case, the dehumidifying agent may be installed on the cylindrical wheel to move between the regeneration unit and the rehumidifying unit according to the rotation of the wheel.

The dehumidifier may include a dehumidifier made of a liquid phase, and in this case, a pump for flowing the dehumidifier may be installed at one side of the dehumidifier.

The liquid dehumidifying agent may be installed in a shell and tube type case in which a selective permeable membrane is formed in a tube shape.

The fuel cell generator may include a water supply pipe installed between the fuel cell system and the evaporative cooler to transfer water generated in the fuel cell system to the evaporative cooler.

The air conditioner using the fuel cell may include a heat storage tank installed between the heat exchanger and the fuel cell system to store heat generated from the fuel cell.

The air conditioning method using the fuel cell according to the present invention comprises the steps of heating the outside air by receiving heat from the fuel cell system, passing the heated outside air through the dehumidifying agent to reduce moisture in the dehumidifying agent, and using the dried dehumidifying agent Reducing moisture in the indoor air, and evaporating and cooling the dried indoor air.

In the step of evaporating and cooling the dried indoor air, the dried indoor air may be cooled by losing heat when the directly injected water evaporates.

In the step of evaporating and cooling the dried indoor air, the dried indoor air may be cooled by sensible heat transfer with a wet channel in which water is injected into the air and cooled.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a schematic diagram illustrating a fuel cell power generation apparatus according to a first embodiment of the present invention.

The fuel cell generator 301 according to the present embodiment heats external air by using a fuel cell system 302 that generates electricity and heat using fuel and an oxidant, and heat generated by the fuel cell system 302. Dehumidifier including a heat exchanger 311, a regeneration unit 320 for receiving the heated air from the heat exchanger 311 to regenerate the dehumidifying agent and a dehumidifying unit 321 for dehumidifying the indoor air using the regenerated dehumidifying agent 319, and an evaporative air conditioner 324 that receives the air from which the moisture is removed from the dehumidifier 319 and cools it and supplies it to the room.

The fuel cell system 302 includes a reforming unit 306 for supplying a hydrocarbon-based fuel gas and reforming to generate a fuel containing a large amount of hydrogen, and a hydrogen purification unit for removing carbon monoxide from the fuel passing through the reforming unit 306 ( A reformer 308 composed of 305 and a fuel cell 303 supplied with oxidant gas and fuel gas to generate electrical energy and thermal energy by electrochemical reaction.

The fuel cell system 302 generates electrical energy and thermal energy by a reaction of hydrogen and oxygen, and the fuel cell system 302 is connected with a conductive line 310 for supplying electrical energy to the outside.

In addition, the fuel cell system 302 is connected to the pump 309 for moving the heat generated as a reaction by-product and the heat storage tank 316 for recovering heat when the electrical energy is generated.

The heat storage tank 316 is connected to a heat energy supply line 317 for supplying heat energy in winter when heating and hot water is required, and a pipe line 323 for replenishing water for heating and hot water supply.

A heat exchanger 311 is installed between the fuel cell system 302 and the heat storage tank 316 to heat external air and supply hot air to the regeneration unit 320 of the rehumidifier 319. A blower 313 is provided in front of the heat exchanger 311 to supply the outside air 312 to the heat exchanger 311, and the heat exchanger 311 uses heat generated by the fuel cell system 302. Thereby heating the outside air 312 delivered by the blower 313.

The air 322 heated in the heat exchanger 311 is sent to the dehumidifier 320 of the dehumidifier 319 and used to remove moisture from the moisture-containing dehumidifier.

On the other hand, the evaporative cooler 324 according to the present embodiment consists of a direct evaporative cooler that directly injects water into the hot indoor air. The evaporative cooler 324 cools the air by taking heat from the air while the water injected into the air evaporates.

One side of the evaporative air conditioner 324 is connected to the pump 326, the pump 326 serves to recover the water injected toward the air again.

The evaporative air conditioner 324 is a cooling device using latent heat of evaporation of water. The greater the evaporation amount of water, the greater the cooling effect, and the smaller the evaporation amount of water, the smaller the cooling effect. The evaporation amount of water depends on the humidity of the indoor air. In other words, when the humidity of the indoor air is low, the amount of evaporation of water increases. When the humidity of the indoor air is high, the amount of water evaporates.

Accordingly, in this embodiment, the dehumidifier 319 is installed in front of the evaporative air conditioner 324 in order to lower the humidity of the indoor air. The dehumidifier 319 is a device for removing moisture contained in the indoor air in the summer season, and is used in the dehumidifying unit 321 and the dehumidifying process for removing moisture of the indoor air 314 introduced through the blower 315 installed at the front. And a regeneration unit 320 for regenerating the dehumidifying agent. The dehumidifier used in the dehumidifier 319 according to the present embodiment consists of a solid dehumidifier.

In addition, the dehumidifier is fixed to a cylindrical wheel (not shown) installed in the dehumidifier 319 so as to rotate the wheel from the dehumidification unit 321 to the regeneration unit 320 or the regeneration unit 320 to the dehumidification unit 321. Will move.

Looking at the operation principle of the dehumidifier 319, while the indoor air passes through the dehumidifier 321 of the dehumidifier 319, the dehumidifier absorbs the moisture contained in the indoor air, and a large amount of moisture by the rotational movement of the wheel. The dehumidifying agent contained is moved to the regeneration unit 320 and the dehumidifier regenerated in the regeneration unit 320 is moved to the dehumidifying unit 321. The dehumidifying agent is dried and regenerated by the hot air 322 heated by the heat exchanger 311 in the regeneration unit 320.

The evaporative cooler 324 operates by lowering the temperature of the air using the latent heat of evaporation of water by directly injecting water into the indoor air. The evaporative cooler 324 can cool the indoor air close to a wet bulb temperature or a dew point temperature using only water injection.

However, since the evaporative cooling method is affected by humidity, the cooling effect is lowered in a high temperature and high humidity environment such as Korea. Therefore, by installing a dehumidifier 319 at the inlet end of the evaporative air conditioner 324, the effect of evaporative cooling may be maximized by lowering the humidity of air before the air is introduced for evaporative cooling.

As such, the fuel cell generator 301 according to the present embodiment stores heat generated in the fuel cell system 302 in a heat storage tank 316 in winter time and uses it for heating and hot water supply, and a dehumidifying agent for evaporative cooling in summer time. It can be used to regenerate and continue to be used regardless of seasonal load fluctuations.

3 is a schematic diagram illustrating an air conditioner using a fuel cell according to a second exemplary embodiment of the present invention.

In the air conditioner using the fuel cell according to the present embodiment, all components except for the evaporative air conditioner are the same as the air conditioner using the fuel cell according to the first embodiment of the present invention.

That is, the air conditioner 401 using the fuel cell according to the present embodiment receives fuel from the reformer 404 and the reformer 404 including the reformer 406 and the refiner 405, and generates electricity and heat. A fuel cell system 402 including a fuel cell 403 for generating a heat exchanger, a heat exchanger 411 for heating the outside air 412 using heat generated by the fuel cell system 402, and a fuel cell system ( A heat storage tank 406 that receives the heat generated from the 402 to perform heating, a regeneration unit 420 that receives the external air 412 heated by the heat exchanger 411, and regenerates the dehumidifying agent and the indoor air 414. Dehumidifier 419 including a dehumidifying unit 421 for dehumidifying) and an evaporative air conditioner 424 for cooling the indoor air by receiving indoor air from the dehumidifier 419.

The evaporative air conditioner 424 according to the present embodiment uses a method of indirectly cooling indoor air, and is provided by sensible heat transfer between the wet channel 426 and the wet channel 426 to perform cooling using latent heat of evaporation of water. It consists of a gun channel 427 for cooling the air.

In the wet channel 426, a part of the indoor air passing through the dry channel 427 is introduced, and water is injected into the introduced air. At this time, the air is cooled to the dew point temperature due to the latent heat of evaporation of the water. And humid air passing through the wet channel 426 is discharged to the outside.

On the other hand, the indoor air 414 is introduced into the dry channel 427, the air flowing into the dry channel 427 is cooled through the sensible heat transfer with the wet channel 426 is converted into cold air 428, It enters the room.

As described above, according to the present embodiment, since the air flowing into the room is indirectly cooled in the gun channel 427 without directly contacting water, the humidity of the indoor air can be prevented from increasing.

4 is a schematic diagram illustrating an air conditioner using a fuel cell according to a third exemplary embodiment of the present invention.

In the air conditioner 501 using the fuel cell according to the present embodiment, the dehumidifier applied to the dehumidifier 519 is made of a liquid dehumidifier, and the other structure is an air conditioner 301 using the fuel cell of the first embodiment of the present invention. It has the same structure as).

That is, the air conditioner 501 using the fuel cell according to the present embodiment receives fuel from the reformer 504 and the reformer 504 including the reformer 506 and the refiner 505 to generate electricity and heat. A fuel cell system 502 including a fuel cell 503 for generating the heat exchanger 511 and a fuel cell system for heating the outside air 512 using heat generated by the fuel cell system 502. A heat storage tank 517 that receives the heat generated by the 502 to perform heating, a regeneration unit 520 that receives the external air 512 heated by the heat exchanger 511, and regenerates the dehumidifying agent and the indoor air 514 Dehumidifier 519 including a dehumidifying unit 521 for dehumidifying) and an evaporative air conditioner 525 for cooling indoor air by receiving indoor air from the dehumidifier 519.

The dehumidifier 519 according to the present embodiment has a selective permeable membrane (Gore-Tex, etc.) that passes water vapor between the water and the dehumidifier but does not pass the liquid water in order to avoid direct contact between the water and the dehumidifier. A shell and tube type case (not shown) has a structure in which a liquid dehumidifier is embedded.

The dehumidifier 519 is a regeneration unit 520 for regenerating the dehumidifying agent using the dehumidifying unit 521 for removing moisture from the indoor air 514, which is hot and humid, and the high temperature air transferred from the heat exchanger 511. And a circulation pump 522 for circulating the liquid dehumidifying agent.

A blower 515 is installed in front of the dehumidifying part, and the indoor air 514 which is hot and humid by the blower 515 is introduced into the dehumidifying part 521 of the dehumidifier 519 and flows into the dehumidifying part 521. Once the air passes through the dehumidifying unit 521, the moisture is transferred to the dehumidifying agent and is changed into dry air.

The liquid dehumidifier, which has received moisture from the air, is moved to the regeneration unit 520 of the dehumidifier by the circulation pump 522, and the moved dehumidifier is dried and regenerated by the air heated by the heat exchanger 511.

Meanwhile, the indoor air from which moisture is removed is supplied to the evaporative air conditioner 525, cooled, and then supplied to the room. The high temperature air 523 used in the regeneration unit 520 of the dehumidifier 519 is discarded to the outside air. do.

5 is a schematic diagram illustrating an air conditioner using a fuel cell according to a fourth exemplary embodiment of the present invention.

The fuel cell generator 601 according to the present embodiment has a structure in which a water supply pipe 628 is installed between the fuel cell system 602 and the evaporative air conditioner 625, and the other structure is the first embodiment of the present invention. It has the same structure as the air conditioner 301 using the fuel cell according to the example.

That is, the air conditioner 601 using the fuel cell according to the present embodiment receives the fuel from the reformer 604 and the reformer 604 including the reformer 606 and the refiner 605 to generate electricity and heat. A fuel cell system 602 including a fuel cell 603 to generate the heat, a heat exchanger 611 and a fuel cell system for heating the outside air 612 using heat generated by the fuel cell system 602. A heat storage tank 617 that receives the heat generated by the 602 to perform heating, a regeneration unit 620 that receives the external air 612 heated by the heat exchanger 611, and regenerates the dehumidifying agent, and the indoor air 614. Dehumidifier 619 including a dehumidifying unit 621 for dehumidifying, an evaporative air conditioner 624 for cooling the indoor air 614 by receiving the indoor air 614 from the dehumidifier 619, the fuel cell system ( Water supply wave for supplying water generated as a by-product from the 602 to the evaporative cooler 625 If 628.

The evaporative cooler 625 is a cooler that cools air by using latent heat in which water is evaporated by injecting water into indoor air, and a part of the injected water evaporates and a part of which is installed at one side of the evaporative cooler 625 ( 626).

Therefore, the evaporative cooler 625 needs to be replenished with water from the outside as the water evaporates. The fuel cell generator 601 according to the present embodiment has a water supply pipe (B) between the fuel cell system 602 and the evaporative cooler 625. 616 is installed so that the water generated as a byproduct of power generation in the fuel cell system 602 is moved to the cooler to satisfy the shortage.

As described above, according to the present exemplary embodiment, the water supply facility for replenishing the water to the evaporative cooler 625 may be removed by supplying the water incidentally generated in the fuel cell system 602 to the evaporative cooler 625. There is no consumption, which reduces the operating cost.

6 is a wet air diagram 201 showing changes in temperature and humidity of air for explaining the effect of the air conditioner using the fuel cell according to the present invention.

Referring to the above-described process of cooling the air by the air conditioner, first, when the water is directly injected to the indoor air, when the indoor air using the heat of evaporation of water to cool the indoor air (202) Is cooled close to the wet bulb temperature (203). On the other hand, when the evaporative air conditioner is equipped with a dry channel and a wet channel to cool water by spraying water from the wet channel and cools the air located in the dry channel by sensible heat exchange between the wet channel and the dry channel, At 202 it is cooled close to the dew point temperature 204.

However, the evaporative cooling method is affected by the humidity of the indoor air because the air is cooled using the heat of evaporation of water. When the humidity is removed using a dehumidifying agent as in the present invention, the initial state of the indoor air from which moisture is removed ( 202 'is cooled close to the wet bulb temperature 203' for direct evaporative cooling and to dew point temperature 204 'for cooling by sensible heat exchange.

As such, when the indoor air is dehumidified, the cooling efficiency is improved by cooling the indoor air to a lower temperature than when dehumidification is not performed even when air of the same temperature is supplied.

In addition, according to the present invention, by using the heat generated from the fuel cell to regenerate the dehumidifying agent, the air efficiency is further improved by continuously dehumidifying the indoor air without exchanging the dehumidifying agent, and do not waste heat generated in the fuel cell even in summer. In addition, the heat utilization efficiency is also improved by using for cooling the indoor air.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to

As described above, according to the present invention, the heat recovered from the fuel cell system is stored in the heat storage tank, used for heating and hot water supply, and during the summer when cooling load is required, the recovered heat is used to regenerate the dehumidifying agent of the evaporative air conditioner. As a result, the thermal efficiency of the fuel cell can be maximized.

In addition, the evaporative air conditioner according to the present invention operates at normal pressure and has a simple structure, thereby making the fuel cell power generation device cheaper and environmentally friendly by using water as a refrigerant.

In addition, the fuel cell power generation apparatus according to an embodiment of the present invention can prevent the humidity of the indoor air from becoming too high because the evaporative air conditioner is composed of a dry channel and a wet channel so that indoor air does not directly contact water.

Claims (13)

delete A fuel cell that generates electricity and heat using fuel and oxidant; A heat exchanger connected to the fuel cell to heat air with heat generated from the fuel cell; A dehumidifier connected to the heat exchanger and including a regeneration unit for regenerating a dehumidifying agent used for removing moisture using air heated in the heat exchanger and a dehumidifying unit for removing moisture contained in air using the dehumidifying agent; And An evaporative air conditioner connected to the dehumidifier and cooling the dehumidified air and supplying it to the room; Including, The evaporative air conditioner is an air conditioner using a fuel cell to cool the air by the latent heat of evaporation by direct injection of water to the air. A fuel cell that generates electricity and heat using fuel and oxidant; A heat exchanger connected to the fuel cell to heat air with heat generated from the fuel cell; A dehumidifier connected to the heat exchanger and including a regeneration unit for regenerating a dehumidifying agent used for removing moisture using air heated in the heat exchanger and a dehumidifying unit for removing moisture contained in air using the dehumidifying agent; And An evaporative air conditioner connected to the dehumidifier and cooling the dehumidified air and supplying it to the room; Including, The evaporative air conditioner is an air conditioner using a fuel cell including a wet channel for injecting water into the air and a dry channel for cooling the air through heat transfer to the wet channel. The method of claim 2, The dehumidifier includes a dehumidifier made of a solid, The dehumidifier is installed on the cylindrical wheel air conditioning apparatus using a fuel cell that moves between the regeneration unit and the dehumidification unit in accordance with the rotation of the wheel. The method of claim 3, wherein The dehumidifier includes a dehumidifier made of a solid, The dehumidifier is installed in the cylindrical wheel air conditioning apparatus using a fuel cell that moves between the regeneration unit and the dehumidification unit in accordance with the rotation of the wheel. The method of claim 2, The dehumidifier includes a dehumidifier made of a liquid, One side of the dehumidifier air conditioning apparatus using a fuel cell is installed a pump for flowing the dehumidifier. The method of claim 3, wherein The dehumidifier includes a dehumidifier made of a liquid, One side of the dehumidifier air conditioning apparatus using a fuel cell is installed a pump for flowing the dehumidifier. The method of claim 2, The dehumidifier includes a dehumidifier made of a liquid, The dehumidifying agent is an air conditioner using a fuel cell which is installed in a shell and tube type case in which a selective permeable membrane is formed in a tube shape. A fuel cell that generates electricity and heat using fuel and oxidant; A heat exchanger connected to the fuel cell to heat air with heat generated from the fuel cell; A dehumidifier connected to the heat exchanger and including a regeneration unit for regenerating a dehumidifying agent used for removing moisture using air heated in the heat exchanger and a dehumidifying unit for removing moisture contained in air using the dehumidifying agent; An evaporative air conditioner connected to the dehumidifier and cooling the dehumidified air and supplying it to the room; And A water supply pipe installed between the fuel cell and the evaporative cooler to transfer water generated in the fuel cell to the evaporative cooler; Air conditioning apparatus using a fuel cell comprising a. The method of claim 3, wherein The dehumidifier includes a dehumidifier made of a liquid, The dehumidifying agent is an air conditioner using a fuel cell which is installed in a shell and tube type case in which a selective permeable membrane is formed in a tube shape. delete Heating the outside air by receiving heat from the fuel cell system; Reducing moisture in the dehumidifier installed in the dehumidifier using the heated external air; Using the dried dehumidifying agent to reduce moisture in indoor air; And Evaporating and cooling the dried indoor air; Including, And evaporating and cooling the dried indoor air, wherein the dried indoor air is cooled by evaporation of water directly injected into the dried indoor air. Heating the outside air by receiving heat from the fuel cell system; Reducing moisture in the dehumidifier installed in the dehumidifier using the heated external air; Using the dried dehumidifying agent to reduce moisture in indoor air; And Evaporating and cooling the dried indoor air; Including, And evaporating and cooling the dried indoor air, wherein the dried indoor air is cooled by sensible heat transfer with a wet channel cooled by evaporation of water injected into the air.

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