JP2013087956A - Air conditioner, and vertical wall surface heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that many technical examinations and proposals have been made conventionally to achieve an air conditioner operated by solar heat and the exhaust heat of fuel cells for a system for air-conditioning the room interior by a refrigerating cycle having a present electric compressor as a global environmental problem from the viewpoint of energy, and the energy efficiency of an air conditioner making the best use of adsorption type dehumidification as a system with a lowest product cost is about 0.5 in COP, which presents a basic problem of requirement of the vast amount of heat source and too large size of an apparatus.SOLUTION: A technology of a water evaporation cooler of high performance with an extremely simple structure is developed for cooling that accounts for 50% or more of the thermal quantity ratio in combination with an adsorption type dehumidifier that consumes the heat source, and a combination of this water evaporation cooler and the adsorption type dehumidifier is optimized to solve the problem described above.

Description

The present invention uses a low-temperature heat source such as solar heat, exhaust heat from a fuel cell, exhaust heat from a gas engine power generator, etc. to dehumidify indoor air, and raises the temperature and humidity of the air by ventilation to cool the exhaust. In addition, a key technology for realizing an air conditioner using a heat source capable of performing cooling with high energy efficiency by skillfully combining them is proposed. As cooling devices in this field, absorption refrigerators, adsorption cooling devices, desiccant dehumidifying devices and the like have already been realized and used, but all have low energy efficiency. There are no examples of good cooling systems with skillful combination with ventilation.

  A conventional cooling or refrigeration system using a heat source such as an absorption type uses a relatively low temperature heat source of about 85 ° C., and uses a low temperature heat source of about 60 ° C. such as solar heat for high performance and economy. Because it was not possible to realize an effective and effective device, there is exhaust heat that should be discarded such as high-temperature factory exhaust heat and special heat equipment exhaust heat, or where gas fuel is allowed to be consumed Many were used and the market was limited. For this reason, the production volume of the equipment is limited, and there are several companies with a scale of 1000 units / year, and operators of electric air-conditioners of the electric compression refrigeration cycle method, for example, 10 million units / Compared with a large number of companies that produce a large amount of the year, there was a big gap in the cost of the product.

Moreover, with the exception of refrigeration devices that use heat sources and refrigeration devices with complex special structures, such as double-effect and triple-effect absorption refrigeration machines, adsorption dehumidifiers and chillers that are generally used for cooling are used. The COP indicating the energy efficiency (ratio of the cooling capacity to the heat source heat consumption) is as low as about 0.5, that is, only the heat quantity of the cooling capacity of about 0.5 for the heat source heat quantity of 1 can be obtained. There is a drawback that a large amount of heat source heat is required to obtain cooling capacity. Further, the volume of the apparatus is more than twice as large as that of an air conditioner using an electric compressor, and thus the product cost has to be extremely high.
A combination of a desiccant dehumidification mechanism using a low-temperature heat source and a cooling mechanism that skillfully utilizes exhaust heat of ventilation that can operate with minimal energy consumption as an effective means to overcome this. Focusing on the fact that it is an effective method, the technology for realizing and realizing this method is the technical field of the present invention.

In both Patent Documents 1 and 2, although the temperature and humidity, that is, the enthalpy, of exhaust air exhausted by ventilation is increased to cool the indoor space as a result, both use a heating source or a cooling source. In other words, this is an example of performing ventilation cooling or ventilation dehumidification using external energy, and it cannot be said that the energy efficiency is excellent. Certainly, these technologies have the effect of reducing the loss of air-conditioning energy due to ventilation compared to a system in which room air is simply exhausted from the interior space of a building. Moreover, both have the effect of reducing the energy loss due to ventilation by installing a temperature and humidity between the indoor and outdoor air called a ventilation element or total heat exchanger, that is, a total heat exchanger, and desiccant dehumidification In terms of having a function and a dehumidifying operation function, it is an excellent system in terms of ensuring air-conditioning comfort through humidity control.

However, in addition to consuming the energy source for heating or cooling as described above, there is no synergistic effect between the desiccant dehumidifying function and the ventilation air-conditioning using exhaust, and the energy consumption reduction effect is limited. That is, in Patent Document 1, a great amount of energy is consumed for realizing the cooler and the reheater, and in Patent Document 2, a great amount of energy is also consumed for the coolers 6 and 7 and the heating re-means 4. In other words, for the function of dehumidification, it is impossible to see a technology that suppresses energy consumption in the corner and cooling function.

Japanese Laid-Open Patent Publication No. 06-123444 JP 2000-1111096 PR

The problems to be solved by the present invention are the realization of a device that can cool an indoor space with little consumption of a power source or a heat source, and a low-temperature heat source that can be obtained in a very wide range, that is, 60 ° C. obtained by solar heat Realization of a dehumidifying device that can operate using relatively low temperature thermal energy and natural energy, such as heat before and after, exhaust heat around 65 ° C. of a low temperature operation type fuel cell of about 70 ° C., and further It is the realization of a cooling system that can enhance the effect by combining both. The aim is a high-efficiency COP of 1.2 or more, which is the total energy efficiency, cooling comfort that is affected by the temperature and humidity of the indoor space and air flow, etc., due to cooling operation, and compact, consumer equipment The realization of an economical system that can withstand practical use.

As a specific problem, the energy efficiency COP of the desiccant cooling device currently realized as a device using the above heat source is about 0.5, and only 50% of the heat consumption can be obtained. In order to obtain the amount of heat, a large amount of energy is required, and there is a problem that the volume of the apparatus becomes so large that practicality is lost. In order to solve this problem, it is important that the COP is a device having high energy efficiency performance, and the inventors set the target value to 1.2. For example, when considering a 5000 Kcal / h (5.8 KW) air conditioner for residential use, a COP 0.5 level desiccant adsorption type air conditioner currently used for consumer use and a COP of 1.2 or more, which is the target of the present invention There are significant differences in the capacity of solar water heaters that are required when operating high-performance cooling systems.

In other words, in the case of 400 W / sq.m, where the solar heat collection characteristic of the panel is an average characteristic, the total area of the required panel is 2.4 times as large as 12 square meters versus 29 square meters, and remains at COP 0.5. However, there are problems such as an increase in costs caused by the large panel area, restrictions on installation locations such as roofs, and an increase in construction costs. At the same time, the device becomes larger and the product cost becomes higher, so that it has not become popular.
A further important issue is the volume and cost of the device. Considering the overall cost of the desiccant cooling device, it is important to reduce the material cost of the adsorbent element coated with the adsorbent used for the desiccant as well as reducing the material cost by downsizing the device. Accordingly, it is an important issue how to reduce the size of the adsorbent element to reduce the material cost, reduce the size of the cooling device to reduce the cost, and ensure the cooling capacity in that state.

The target value is as small as an air conditioner that uses a compressor and an electric motor with a refrigeration cycle as a drive source, but specifically, it was separated into the current indoor unit and outdoor unit. We want to aim for a volume twice that of the outdoor unit of the so-called split type air conditioner.
In order to solve the above problems, it is necessary to improve the volume-based performance of the adsorbent element and reduce the cost, and it can be said that the contrivance of the structure mechanism is one of the problems.
As described above, the present invention invents and proposes a new cooling system that makes use of the dehumidifying function of the adsorbent and does not require energy such as power and heat. Furthermore, the present invention proposes a technique for constructing a new cooling system by combining both the dehumidifying system of the adsorbent and the new cooling system, and intends to solve the above-described problems. Therefore, it can be said that the most important problem is to materialize the cooling method, the detailed structure, and the material.

Claim 1 proposes the principle of an air conditioner that cools air in a space without using a refrigeration cycle incorporating a compressor. 2. Description of the Related Art Conventionally, a dehumidifier has been put to practical use in which moisture of processing air is adsorbed using an adsorption device to increase the temperature, and then cooled by outdoor air to return to normal temperature. Further, moisture is evaporated in the dehumidified air to cool it. This is the principle of the desiccant air conditioner. However, in this case, the blown-out temperature of the cooled processing air can be cooled only about half that of an air-conditioner using an electric refrigeration cycle. That is, the blowout temperature after cooling the room temperature air of 27 ° C. is usually about 22 ° C. while the electric air conditioner is about 17 ° C.
In view of this, a method for cooling the processing air (usually indoor air), which has been cooled once by outside air (usually outdoor air), to a temperature sufficient as a cooling device is presented. For example, it is a technique in which about 20% of the processing air is separated, sprinkled therewith and humidified to cool, and the remaining 80% air is further cooled using this low temperature air. An extremely high performance air-to-air heat exchanger is required to realize this cooling mechanism.

The heat exchanger used here separates the air to be heat-exchanged by a continuous flat heat-transfer wall and allows heat exchange with each other efficiently, and water is sprayed on one surface of this heat-transfer surface. Water forms a water film, and the heat of evaporation is further efficiently exchanged through the heat transfer wall surface.
The technology of the high-performance heat exchanger used for this purpose is shown in claim 5, and an optimum embodiment is shown in FIG. The biggest feature technology is a flat surface with vertical and continuous heat transfer surfaces folded in a zigzag comb shape. The huge surface area that contributes to the heat transfer performance and all the surface areas can be installed vertically. The water sprinkled there for cooling falls freely while wetting the heat transfer surface, so that polka dots accumulate on the surface of the heat transfer surface and hate it. It realizes heat exchange performance between air and air. When the humidity of the air in the space is low or in an area where the humidity is low, there is an effect that the cooling operation can be performed only by the operation of the heat exchanger without using the adsorption process. As shown in FIG. 1, the process air enters the gap of the FP1 of the heat exchanger from the lower left in the figure as the air to be cooled, is cooled while rising to the upper part, and flows out as indicated by the arrow on the left in the figure. Is blown out. On the other hand, the air on the cooling side, which is usually outdoor air, enters the inlet on the right side in the figure and mixes with the tap water mist blown from the tap water sprinkling nozzle 4 and is cooled while being cooled by the FP2 of the vertical wall heat exchanger. It flows through a gap of dimensions, wets the vertical wall surface to form a water film, and this cooling heat cools the processing air through the heat transfer wall surface. The sprinkled water adheres to the wall surface and flows down the wall surface according to the flow of gravity and cooling air. This realizes a high-performance water evaporation air-to-air heat exchanger.

The size of FP2 is larger than that of FP1 by the amount of the water film on the wall surface. In the example shown in the figure, FP1 is 2 mm and FP2 is 3 mm.
When cooling the processing air according to claim 1, a technique for increasing the cooling effect when cooling the processing air before separation with a part of the air separated from the processing air is presented in claims 2 and 3. That is, the second aspect is that the part of the air to be separated as the cooling source is separated from the processing air before being cooled and blown out into the space, and the third aspect is the point where This is a technique for flowing process air in a counterflow. Since the processing air blown into the space is cooled and dehumidified, if a part of this is separated and heat exchange is performed with the processing air to counter flow, the processing air with high enthalpy (temperature and humidity) is high. It is cooled by a part of the separated low enthalpy air that has been sprinkled to the lowest temperature and blown into the space. On the other hand, a part of the air cools the processing air in the watering state, receives heat, and becomes high-temperature and high-humidity high enthalpy air. The above phenomenon is the effect that the air having the lowest enthalpy was used as the cooling air, and the effect of the sprinkling effect and the counterflow effect overlapped.

The change in the state of the cooling device will be described with reference to the wet air diagram of FIG. A: Treated air (room air) is absorbed by an enthalpy in the adsorption step and reaches point B. That is, for example, 27 ° C. is heated and dehumidified to 34.5 ° C. In this state, it is cooled to point C by the technique described in claim 7. At this time, outdoor air serving as a cooling source exchanges heat with room air, is humidified from point b to point c, and is heated. That is, the indoor air is cooled from B to C, and the outdoor air is heated from point b to point c. The room air at point C is cooled by the technique of claim 4 to point D. About 20% of the air is separated at the point D, and the air cools the air at the point C to the point D. 20% of the separated air comes into contact with the sprinkled water and reaches point E, and is heated and humidified by the technique of claim 4 to point F. In other words, the processing air is cooled from C to D through mutual heat exchange, and the cooling air is heated from E to F. Thus, the indoor air point A is cooled and dehumidified to reach the point D. This means that almost the same enthalpy reduction effect as that of the air conditioner up to the point I as a result of the cooling in the evaporated air of the refrigeration cycle cooler having the electric compressor, that is, the cooling effect can be achieved.

The fourth aspect of the present invention presents a technique for maximally cooling the processing air by efficiently performing heat exchange between the processing air and cooling air, that is, air separated by about 20% from the processing air. That is, using an air-to-air heat exchanger as shown in FIG. 1 consisting of a thin and vertical heat transfer wall surface, a part of the separated air that serves as cooling air is made to flow downward and sprinkle on the wall surface. A water film is formed. As can be seen from FIG. 1, the heat transfer wall has a dense structure in which aluminum thin plates are folded at intervals indicated by FP2, and the cooling air flows downward. It is easy to form a thin water film on the heat transfer surface and cool the heat transfer wall. In this state, the processing air is flowed upward in a counter current to flow in the narrow flow path indicated by FP1 in FIG. 1, thereby increasing the mutual air contact factor. That is, the rate of reaching the counterpart air temperature is improved. As a result, the effect is obtained that the treated air is sufficiently cooled in this heat exchange step.

  In the heat exchanger presented in claim 5, the heat transfer surface is a thin aluminum plate, but it is effective to improve productivity by using resin as in claim 8. In addition, as in claim 9, it is effective in improving the overall performance to secure the ventilation path even if a water film or water droplets are formed by making the FP2 on which water is sprayed larger than FP1. In addition, it is effective in forming a thin water film by coating the surface of the heat transfer surface on which the water film is formed with a hydrophilic film such as water glass on the surface, and thus the overall heat exchange performance. It is effective in improving Furthermore, it is effective for preventing corrosion of the heat transfer surface and preventing adhesion and contamination of the water scale.

Claim 6 presents the use of the vertical wall heat exchanger of claim 5 as the air-to-air heat exchanger of the cooling device of the present invention, and by virtue of the heat transfer performance of this vertical wall heat exchanger, The performance, size reduction, and cost reduction of the cooling device can be achieved.
According to the seventh aspect of the present invention, the cooling air partially separated from the processing air described above is made high enthalpy as shown in FIG. 3 and then exhausted to the outside of the room or the like.
The enthalpy of the outdoor air indicated by dots and the enthalpy of the exhaust air F point are almost equal, and therefore, there is a feature that there is no energy loss due to ventilation. In general, when indoor air is exhausted outdoors by ventilation, there is a problem that the ventilation energy loss increases due to the difference in enthalpy of both, but the cooling by the cooling device of the present invention has almost no loss, and a large amount of ventilation is It is particularly effective in terms of energy saving in the necessary space, i.e., hotels, theaters, and elderly facilities.

Claim 11 proposes that this vertical wall heat exchanger is used when the process air in the second step described in claims 3 and 4 is cooled by outside air. In this case, all the technical effects of the vertical wall heat exchanger are effective because water is sprinkled on the outside air side. The vertical wall heat exchanger used in the third step described so far and the vertical wall heat exchanger in the second step presented here are configured integrally, and the upper part of the second step is made up of one heat exchanger stock. The method of performing heat exchange in the first step is effective in reducing the size and cost of the entire cooling device, and is a highly practical technique.

One of the major problems of this cooling device is the generation and fixation of tap water chalk in the water evaporative cooler, the generation of contamination and mold, and the generation of odors. Accordingly, in claim 12, it is possible to prevent these problems by discarding a certain proportion of the amount of water sprayed. Furthermore, it is effective to use rain water as shown in claim 14, and it is also effective in terms of saving water bills. For this reason, it is effective to store rainwater and use it when this cooling device operates.

  In claim 13, in order to make more effective use of this water, it is a technique to be utilized in the adsorption dehumidification process of the first step of the air conditioner shown in claims 1, 2, 3, and 4. That is, the processing air is cooled by being sprinkled and evaporated by a water evaporative cooler, and this water dropped on the lowest part of the vertical wall heat exchanger is collected by a drain pan, and as shown in FIG. And 15 is effective in regenerating the adsorption effect by cooling the adsorbent which is communicated with the inside of the pipe of the heat exchanger with adsorbent and joined to the fin surface through the thin fin outside the pipe.

In Claim 14, the heat source used as the heating source used for reproduction | regeneration of the adsorbent of this air conditioner is shown. Of course, it is possible to use not only solar heat but also exhaust heat from the fuel cell, cooking exhaust heat from the kitchen, exhaust gas from the combustion gas, exhaust heat from the heat pump air conditioner, and other temperatures of 60 ° C. or higher. In particular, the ventilation function of the present cooling device is effective in enhancing the cooling effect in a kitchen where the temperature in the space is high or a theater that requires a large amount of ventilation.

The following effects can be expected from the above invention.
1. It is possible to provide an air conditioner that effectively uses the latent heat of water evaporation to cool indoor air without using a heat source or a power source other than a fan motor and a water pump.
2. A desiccant dehumidifier using a heat source is incorporated into the above apparatus to provide an air conditioner that efficiently performs both dehumidification and cooling.
3. When the indoor air humidity is detected and the humidity is low or in an area with low humidity, the desiccant dehumidifier is stopped or cooling is possible with a device without the desiccant part, and the amount of heat source used is small or absent. An air conditioner can be provided.
4. The above air conditioner can be expected to reduce manufacturing depreciation compared to conventional air conditioners using a compressor or a refrigeration cycle, and can realize an air conditioner that uses less primary energy.

External view of vertical wall heat exchanger of the present invention Structural drawing of a typical air conditioner according to the present invention Wet air diagram showing operation of processing air and cooling air of the present invention

A typical example of a package type high-efficiency air conditioner embodying the above invention is shown in FIG. This device is composed of a lower desiccant dehumidifier and an upper water evaporative cooling device. The center of the desiccant dehumidifier is the desiccant dehumidifiers 3 and 15, which have a structure that can absorb moisture by baking gelatin crystals as an adsorbent on the outer surface of the fins of the fin tube heat exchanger.
When water at 25 ° C. is sent from the drain hose 16 into the copper tubes of the desiccant dehumidifiers 3 and 15, the indoor air guided by the air blowing damper 7 is adsorbed by the adsorbent of the desiccant dehumidifier. If this operation is continued for about 5 minutes, the desiccant switching damper is switched and outdoor air is introduced, and at the same time, hot water, which is a 60 ° C. heating medium heated by the solar water heater, is sent to the solar hot water pipe 5. As a result, moisture is released from the adsorbent of the desiccant dehumidifiers 3 and 15, and this moisture release operation is continued for about 5 minutes. This is repeated to dehumidify the indoor air, and the moisture is released to the outdoor air.

This dehumidifying operation is operated only when the temperature and humidity of the indoor air (point A at 27 ° C. in FIG. 3) is detected by the temperature / humidity sensor and it is determined that the humidity should be high, and otherwise the dehumidifying operation is not performed. . The indoor air that has been dehumidified and has reached a high temperature reaches point B in FIG. 3 and reaches a high temperature of 34.5 ° C.
This air is sent to the upper water evaporative cooling device by the indoor blower 9 of FIG. This passes through the vertical wall heat exchanger 1 along a path indicated by an indoor air path 17 in FIG.
At this time, the water is first cooled by the sprinkled and cooled outdoor air indicated by 12, and it is further cooled by the following mechanism. That is, about 80% of the cooled indoor air is blown into the room. On the other hand, the remaining 20% goes to the right side of the vertical surface heat exchanger as shown by the cooling air 18 separated from the processing air shown at the top of FIG. 2 and is mixed with the mist sprayed by the tap water spray nozzle 4. The wall surface of the vertical wall heat exchanger is cooled and exhausted to the outside by the outdoor cooling fan 11. As a result, the indoor air indicated by 17 is cooled through the heat transfer wall surface.

    The operation of indoor air and outdoor air in the water evaporative cooling device will be described on the wet air diagram of FIG. The room air dehumidified to a point B and heated to a high temperature is cooled by the outdoor air in the lower half of the vertical wall heat exchanger 1 in FIG. This is a normal desiccant air conditioner. At this time, outdoor air as cooling air is heated and humidified from point b to point c in the figure. In this air conditioner, the air is further cooled by the cooling air 18 separated from the processing air by about 20% to reach point D. The blowing temperature is 22.1 ° C. Since the humidity is about 70%, although not shown at the air outlet of the air conditioner, a method of further humidifying and cooling by installing a tap water use humidifier is used.

20% of the cooling air is released to the outside in the state of being heated and humidified up to point F in FIG. 3 and becomes ventilation air. The energy loss when rejoicing the necessary ventilation in a normal building becomes almost zero, so the ventilation loss that occurs in the case of a conductive refrigeration cycle air conditioner without ventilation can be said to be an extremely effective device in terms of energy saving.

  As can be seen from the above explanation, we can provide air conditioners with excellent global environment in a very wide market, so we have penetrated the approximately 4 trillion yen market, which is a vast world market for conventional electric compressor air conditioners. It is expected to go. Even 10% of this can constitute a 400 billion yen business, so we recognize that this is an extremely important invention from an industrial point of view.

1 Vertical wall heat exchanger 2 Cooling device 3 Desiccant dehumidifier 2
4 Tap Water Sprinkling Nozzle 5 Solar Hot Water Pipe Line 6 Hot Water Switch Valve 7 Blow Switch Damper 8 Outdoor Blower 9 Indoor Blower 10 Drain Pan 11 Outdoor Cooling Blower 12 Outdoor Air Path 14 Water Spray 15 Desiccant Dehumidifier 1
16 Drain hose 17 Indoor air path
18 Cooling air separated from process air

Claims (15)

Air in the space is taken into the apparatus as treated air, dehumidified by an adsorber, then cooled by outside air, and then a continuous flat thin partition wall is used as the heat transfer surface. The temperature is lowered by sprinkling water on the heat transfer surface on the side through which the air flows or part of the air separated from the processing air using an air-to-air heat exchanger that exchanges heat between air flowing on both sides. A cooling apparatus characterized in that the processing air is dehumidified and cooled by further cooling the processing air flowing in contact with the heat transfer surface on the back side of the heat transfer surface by the air or the heat transfer surface. Air in the space is taken into the apparatus as treated air, dehumidified by an adsorber, then cooled by outside air, and then a continuous thin flat partition wall is used as a heat transfer surface to cover both sides of the heat transfer surface. A part of the separated air is separated before or after the processing air is blown into the space by using an air-to-air heat exchanger for exchanging heat between the flowing air. The air that has been lowered in temperature by spraying water on the heat transfer surface or the heat transfer surface is in contact with the heat transfer surface on the back side of the heat transfer surface and the process air is flowed to further cool the air. A cooling device characterized by dehumidifying and cooling air. Air in the space is taken into the device to form processing air, this processing air is brought into contact with the adsorbent in the first step, adsorbed and dehumidified, and in the second step, this processing air is heat exchanged with outside air. This is cooled, and as a third step, the treated air is allowed to flow along the surface of the wall surface of the air-to-air heat exchanger composed of a vertical thin flat heat transfer wall surface. Most of the air excluding the air is blown into the space, and the part of the treated air before being blown into the space is opposed to the majority of the air along the opposite surface of the vertical heat transfer wall surface. The water is sprinkled so that a thin water film can be formed on the opposite surface, and the sprinkled water evaporates to humidify and cool the part of the air to near the wet bulb temperature. Vertical heat transfer wall However, the processing air flowing in contact with the surface of the wall surface is cooled, and the processing air blown into the space is dehumidified and cooled by these three steps, and the part of the air that has not blown into the space is exhausted out of the space. The cooling device is characterized by the ventilation air. Air in the space is taken into the device to form processing air, this processing air is brought into contact with the adsorbent in the first step, adsorbed and dehumidified, and in the second step, this processing air is heat exchanged with outside air. In the process of cooling this, and as a third step, this process air flows along the surface of the wall of the air-to-air heat exchanger consisting of a vertical heat transfer wall, cools it and blows it into the space. A part of the treated air before blowing out is separated, and this air flows in the opposite direction of the vertical heat transfer wall along the opposite surface of the majority of the air and downwards, and on the opposite surface. Is sprayed into the part of the air so that a thin water film can be formed, and the sprinkled water evaporates to humidify the part of the air and cool it to near the wet bulb temperature, while simultaneously A water film is formed on the heat transfer wall The step of cooling this and cooling the processing air flowing upward in contact with the opposite surface of the wall surface is configured, and the processing air blown into the space is dehumidified and cooled by these three steps, and is not blown into the space. In addition, a cooling apparatus characterized in that the part of the air is exhausted out of the space to obtain ventilation air. It is a heat exchanger that is divided into two by a heat transfer surface composed of many fin pitches by repeatedly folding a continuous aluminum thin plate with a flat air flow path in a zigzag so that all the heat transfer surfaces are vertical In other words, the air-to-air heat is a method in which the horizontal cut surface is arranged in the zigzag shape and the air flows through the flow paths on both sides sandwiching the vertical heat transfer surface to transfer heat to each other. In the exchanger
One air flows from bottom to top along one side of the heat transfer surface, the other air flows from top to bottom along the other surface of the heat transfer surface, and any air or The surface of the heat transfer surface is sprinkled to form a water film on the surface of the heat transfer surface so that the heat transfer surface is covered with the water film and wetted. Vertical wall surface heat for a cooling device, wherein the one air flowing in contact with the opposite surface through the heat transfer surface is cooled by cooling to a temperature close to the wet bulb temperature of the air flowing through Exchanger. The cooling apparatus according to any one of claims 1, 2, 3, and 4, wherein the vertical wall heat exchanger is used as the air-to-air heat exchanger. The outside air is taken in and integrated with the air taken in from the space to form the processing air, and the amount of air taken from outside the space and the air amount of the exhaust air are approximately matched. Item 5. The cooling device according to any one of items 3 and 4. The vertical wall surface heat exchanger according to claim 5, wherein the heat transfer wall surface is formed of a resin. The shape of the heat transfer wall surface is such that the pitch between the wall surfaces on the side of the heat transfer surface on which the water film is formed is larger than the pitch between the wall surfaces on the opposite surface side where the water film is not formed. The vertical wall surface heat exchanger according to any one of claims. The vertical wall surface heat exchange according to any one of claims 5, 8, and 9, wherein the heat transfer wall has a hydrophilic coating formed on the wall surface on the side of the heat transfer surface forming the water film. vessel. The cooling apparatus according to any one of claims 1, 2, 3, and 4, wherein the vertical wall heat exchanger is used as a heat exchange apparatus when the processing air is cooled by the outside air. .   When the air conditioner is operated and the water sprayed on the heat transfer surface satisfies the standard based on a certain standard such as the concentration of the chlorinated acid or the operation time, a part or a constant amount or continuous or intermittent The cooling according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11, wherein a certain amount of water is discarded from the cooling device. apparatus.   The cooling device is operated, and the water sprayed on the heat transfer surface is cooled by communicating with the cooling piping provided in the adsorption device, and the evaporation effect is exhibited in the air-to-air heat exchanger. Further, the present invention contributes to the improvement of the adsorption characteristics of the adsorption device, according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12. The cooling apparatus as described. Reuse of water and use of rainwater The water used to spray water on the heat transfer surface is water stored with rainwater around the space. , 9, 10, 11, 12, or 13. Solar heat, kitchen heat As a heat source used for regeneration of the adsorbent in the adsorption and dehumidification step, solar heat, exhaust heat from the fuel cell power generator, exhaust heat from the combustion gas used for cooking in the restaurant kitchen, or cooling Any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14 using exhaust heat of an operating electric heat pump air conditioner. The cooling device according to item.