Claims:[Claim 1] A Cooling plate for an evaporative cooling system comprising:
a. porous wall 1;
b. a hollow cavity 6 having inlet and an outlet;
c. hollow cavity 2 immediately adjacent the porous wall;
d. hollow cavity 3 optionally coated with polymer membrane;
e. a fluid is disposed within the hollow cavity, and delivering the fluid to the porous wall through capillary action.

[Claim 2] A Cooling plate of claim 1, wherein the Cooling plate includes;
a. an inlet aperture, an outlet aperture of cavity;
b. the inlet aperture of first plate is connected with fluid outlet of reservoir;
c. the outlet aperture of first plate and the inlet aperture of second plate are attached for fluid communication;
d. multiple pates are connected with each other with inlet aperture, an outlet aperture of cavity with the fluid communication in all the connected plates.

[Claim 3] A Cooling plate of claim 1, wherein polymer membrane is Superabsorbent polymers (SAPs).

[Claim 4] A Cooling plate of claim 3, wherein Superabsorbent polymers (SAPs) polyacrylamide copolymer, ethylene maleic anhydride copolymer, cross-linked carboxymethylcellulose, polyvinyl alcohol copolymers, cross-linked polyethylene oxide, and starch grafted copolymer of polyacrylonitrile

[Claim 5] A Cooling plate of claim 1, wherein fluid is water.

[Claim 6] A Cooling plate of claim 1, wherein walls are made of fins to form a matrix of fines lines precisely spaced both vertically and horizontally to increase surface area for heat exchange between wet walls of cooling plates and air

[Claim 7] A Cooling plate of claim 1, wherein fins are of different shapes.

[Claim 8] A Cooling plate of claim 1, wherein the cooling plates is made from hydrophilic material

[Claim 9] A Cooling plate of claim 8, wherein hydrophilic material such as clay, ceramic clay, plant fibers, or porous material derived or created from naturally available raw material i.e cotton, molasses etc. after preparing membrane, it is coated with super absorbent polymer layer from inside cavity or -synthetic fibers such as polyester, olefin, and nylon, either in fabric form or flocking can be used with or without surface modfication; preferably materials are bonded to an impermeable substrate such as metal or plastic; porous plastic in sheet form; Porous plastic comprise plastic granules, such as PVC, which remain permeable although fused together; an impermeable backing such as paint or thin plastic film is added to the porous plastic.

[Claim 10] A Cooling plate of claim 8, wherein hydrophilic material are preferably clay or ceramic clay

[Claim 11] A Cooling plate of claim 8, wherein the cooling plates is having porosity 0.01 micrometer to 5 micrometer and avaearage porosity is 30%-50 % Vol. which contains water but does not ooze from membrane. pressure regulator at inlet provides constant pressure for capillary action but oozing water

[Claim 12] A Cooling plate of claim 1, wherein cooling plate for an evaporative cooling system attached in cooling units comprising of;
a. air flow through stacks of cooling plates;
b. the evaporative cooling plates 1 inlet aperture of first plate connected with fluid outlet of reservoir, the outlet aperture of first plate and the inlet aperture of second plate are attached using structural glue i.e silicone sealant, elastomeric sealant etc or cement or clay. for fluid communication in consecutive multiple pates are connected with each other with inlet aperture, an outlet aperture of cavity with the fluid communication in all the connected plates consists of even flow of cooling fluid, a water circulating pump 13 and a fan 14 wherein water-to-air heat on cooling plates walls 12;
c. The heat exchanged on cooling plates walls 12 that is on porous matrix, more preferably made of porous material;
d. the heat exchange cooling plates walls 12 are optionally made of fins to form a matrix of fines lines precisely spaced both vertically and horizontally to increase surface area for heat exchange between wet walls of cooling plates and air.

[Claim 13] A Cooling plate of claim 1, wherein Cooling units comprising of air cooler or air flow through stacks of cooling plates on buildings open parts with air circulation.

[Claim 14] A Cooling plate of claim 1, wherein Cooling plate attached on air conditioner comprises:
a. evaporative cooling plates attached on air conditioner unit;
b. the evaporative cooling plates 1 inlet aperture of first plate connected with water outlet of air conditioner unit, the outlet aperture of first plate and the inlet aperture of second plate are attached for fluid communication in consecutive multiple plates are connected with each other with inlet aperture, an outlet aperture of cavity with the fluid communication in all the connected plates consists of even flow of water circulated form air conditioner and a fan of air conditioner unit, water-to-air heat on cooling plates walls 12.

[Claim 15] A Cooling plate of previous claims, wherein cooling plate wall will reduces the temperature around the air conditioner unit.

[Claim 16] A Cooling plate of previous claims, wherein cooling plate for an evaporative cooling system controls condensation and prevents water spill around cooling plate.

[Claim 17] A Cooling plate of previous claims, wherein cooling plate for an evaporative cooling system can be placed in any direction irrespective of gravitational direction and matrix of stack of any number of plates.

[Claim 18] A Cooling plate of previous claims, wherein cooling plate allow free flow of air over surface, water evaporation is reduced and less water consumption can be obtained with new design.

[Claim 19] A Cooling plate of previous claims, wherein cooling plate is coated with antimicrobial, insect repellent chemical externally so that it prevents breeding of insect’s i.e mosquitoes, and bacterial, fungal growth over surface.
, Description:FIELD OF THE INVENTION:

The present invention relates to novel cooling plates for evaporative cooling technology by using hydrophilic material. The present invention mainly relates to an improved evaporative cooling plates that is made up from naturally available hydrophilic material such as clay, ceramic clay, plant fibers, or porous material derived or created from naturally available raw material i.e. clay or ceramic clay.

BACKGROUND OF THE INVENTION:

Evaporative cooling methodology has been used for centuries with different mode of designs, materials. Air conditioning is used worldwide to provide comfortable and healthy indoor environments that are properly ventilated and cooled and that have adequate humidity control. While being useful for conditioning supply air, conventional air conditioning systems are costly to operate as they use large amounts of energy (e.g., electricity) with additional energy loss due to mechanical in efficiency of system reflected as additional heat energy in environment. With the growing demand for energy, the cost of air conditioning is expected to increase, and there is a growing demand for more efficient air conditioning methods and technologies. Additionally, there are increasing demands for cooling technologies that do not use chemicals and materials, such as many conventional refrigerants, that may damage the environment if released or leaked. Maintenance is also a concern with many air conditioning technologies, and, as a result, any new technology that is perceived as having increased maintenance requirements, especially for residential use, will be resisted by the marketplace.

Evaporative coolers are used in some cases to address air conditioning demands or needs, but, due to a number of limitations, conventional evaporative coolers have not been widely adopted for use in commercial or residential buildings. Evaporative coolers, which are often called swamp coolers, are devices that use simple evaporation of water in air to provide cooling in contrast to conventional air conditioners that use refrigeration or absorption devices using the vapor-compression or absorption refrigeration cycles. The use of evaporative cooling has typically been limited to climates where the air is hot and humidity is low. In such dry climates, the installation and operating costs of a conventional evaporative cooler can be lower than refrigerate air conditioning. Residential and industrial evaporative coolers typically use direct evaporative cooling with warm dry air being mixed with water to change the water to vapor and use the latent heat of evaporation to create cool moist air (e.g., cool air with a relative humidity of 50 to 70 percent). For example, an evaporative cooler may be provided in an enclosed metal or plastic box with vented sides containing a fan or blower, an electric motor to operate the fan, and a water pump to wet evaporative cooling pads. To provide cooling, the fan draws ambient air through vents on the unit's sides and through the dampened pads. Heat in the air evaporates water from the pads, which are continually moistened to continue the cooling process. The cooled, moist air is then delivered to the building via a vent in the roof or a wall.

While having an operation cost of about one fourth of refrigerated air conditioning, evaporative coolers have not been widely used to address needs for higher efficiency and lower cost conditioning technologies. The problem may get worse as temperatures increase such as to temperatures well over 100°F. As a result, the air conditioning system may need to include refrigerated air conditioning to cool the outlet air from the evaporative cooler, which results in a system that is more expensive to purchase, operate, and maintain.

Additionally, conventional evaporative coolers provide no dehumidification of the air and, in fact, often output air at 80 to 90 percent relative humidity, which may only be acceptable in very dry environments as very humid air reduces the rate of evaporation for occupants of the building (e.g., reduces comfort levels) and can cause condensation resulting in corrosion or other problems. Dehumidification is provided as a second or later stage in some evaporative coolers such as by wicking a liquid desiccant along a wall of the air flow channel or chamber, but such systems have not been widely adopted due to increased operating and maintenance costs and concerns of having the desiccant expelled with the conditioned air. In general, maintenance is a concern with conventional evaporative coolers as the evaporation process can result in mineral deposits on the cooling pads and other surfaces of the cooler that need to be cleaned or replaced to maintain the efficiency of the system, and the water supply line needs to be protected against freezing during the off season such as by draining the system. Due to these and other concerns, conventional evaporative cooling is unlikely to be widely used to provide an energy efficient, air conditioning alternative for commercial and residential applications until significant improvements are made that address maintenance concerns while improving achievable cooling (e.g., providing adequately cooled output air for direct use in a building).

US6581402B2 has attempted to disclose new method for cooling fluid to its due point by using wicks and perforated plates. These system is having drawback which is a water pool that is exposed with direct environment. Such design allows free breeding of mosquitoes. In addition to that there are several moving parts that needs continuous maintenance for optimal and efficient performance.

US5727394A has disclosed improved method for indirect cooling of air for building air conditioning. Such system is used to maintain humidity level by using desiccant wheel. Relatively this system is used for large infrastructure i.e. buildings, hospitals, shopping mall etc. but it might be non-practical for small scale set up such as small house, individual office etc.

US5800595A has disclosed a wick that cools air by using plurality of corrugated sheets arranges such a way so that it separates water flow and air flow. Wick is water absorbent that absorbs water form wet channels and evaporates water into dry channels. As a result humid cool air come out from air exit area. This invention is having two limitations with compared to disclose invention herewith. First is open circulating water system. If it is closed wick is having non uniform water oozing in depend part. With compared to US5800595A, disclosed invention is having closed water system that do not required continuous circulation. Apart from that, super absorbent polymer layer keeps water enclosed into gel form and clay layer absorbs water from gel by capillary action. These design allows disclosed system to perform optimally without oozing of water onto dry surface.

US20140260398A1 has disclosed indirect evaporative cooling by single separate membrane having wet and dry for evaporative cooling and inlet air cooling respectively. Again like US5727394A, it is mainly suitable for industrial or large scale systems. It needs continuous direct water and air circulation so require space and continuous operation for air conditioning.

SUMMARY OF THE INVENTION:

The present invention relates to an evaporative cooling system using ceramic or clay with significant improvements and advantages over prior art plates for evaporative heat exchangers.

One of the aspect of the present invention is a cooling plate for an evaporative cooling system comprising of:
i. porous wall 1;
ii. a hollow cavity 6 having inlet and an outlet;
iii. hollow cavity 2 immediately adjacent the porous wall;
iv. hollow cavity 3 optionally coated with polymer membrane; and
v. a fluid is disposed within the hollow cavity, and delivering the fluid to the porous wall through capillary action.
One of the aspect of the present invention is a cooling plate, wherein the Cooling plate includes;
an inlet aperture, an outlet aperture of cavity;
the inlet aperture of first plate is connected with fluid outlet of reservoir;
the outlet aperture of first plate and the inlet aperture of second plate are attached for fluid communication;
multiple pates are connected with each other with inlet aperture, an outlet aperture of cavity with the fluid communication in all the connected plates.

One of the aspect of the present invention is a cooling plate for an evaporative cooling system wherein the cooling plates is made from hydrophilic material such as clay and designed in such a way so that it contains water but does not ooze from membrane.

One of the aspect of the invention to provide a cooling plate for efficiently cooling a stream of ambient air.

One of the aspect of the present invention is a cooling plate for an evaporative cooling system wherein the ceramic cooling plate controls condensation as well as prevents water spill around cooling plate unlike currently used honeycomb condensation membrane.

One of the aspect of the present invention is a cooling plate for an evaporative cooling system wherein the cooling plates can be placed in any direction irrespective of gravitational direction and the cooler design would have more freedom for compact design.

One of the aspect of the present invention is a cooling plate for an evaporative cooling system wherein the cooling plates it allow free flow of air over surface, water evaporation is reduced and less water consumption can be obtained with new design.

One of the aspect of the present invention is a cooling plate coated with antimicrobial, insect repellent chemical externally so that it prevents breeding of insect’s i.e. mosquitoes, and bacterial, fungal growth over surface of the cooling plate.

One of the aspect of the present invention is a cooling plate for an evaporative cooling system attached in cooling units comprising of;
air flow 15 through stacks of cooling plates;
the evaporative cooling plates 1 inlet aperture of first plate connected with fluid outlet of reservoir, the outlet aperture of first plate and the inlet aperture of second plate are attached for fluid communication in consecutive multiple pates are connected with each other with inlet aperture, an outlet aperture of cavity with the fluid communication in all the connected plates consists of even flow of cooling fluid, a water circulating pump 13 and a fan 14 wherein water-to-air heat on cooling plates walls 12;
The heat exchanged on cooling plates walls 12 that is on porous matrix, more preferably made of porous material;
the heat exchange cooling plates walls 12 are optionally made of fins to form a matrix of fines lines precisely spaced both vertically and horizontally to increase surface area for heat exchange between wet walls of cooling plates and air.

One of the aspect of the present invention is cooling plate attached on air conditioner comprises:
evaporative cooling plates attached on air conditioner unit
the evaporative cooling plates 1 inlet aperture of first plate connected with water outlet from condensing coil of air conditioner unit, the outlet aperture of first plate and the inlet aperture of second plate are attached for fluid communication in consecutive multiple plates are connected with each other with using water resistant glue/ adhesive inlet aperture, an outlet aperture of cavity with the fluid communication in all the connected plates consists of even flow of water circulated form air conditioner and a fan of air conditioner unit, water-to-air heat on cooling plates walls 12.

One of the aspect of the invention is to provide a cooling plate for an improved air conditioning system comprised of a combination of desiccant and improved indirect evaporative cooling comprising cooling plates.

The present invention provides an cooling plates for evaporative cooler wherein fluids of all types flowing through cavity/ channels and through capillary action fluid follows through the fin wall for heat exchange which allows heat transfer through the plate due to thin layer or moisture formed on the ouster side of the fin wall. The cooling plates are made from the suitable materials that prevents or minimizes oozing out of fluid form the cooling plates and increase heat transfer laterally along the plate. For purposes of application, we wish to define certain terms:

1) Heat transfer surface or heat exchange surface has many configurations. All are encompassed within the subject of this disclosed invention with appropriate adjustment to the wetting and flows as are well known in the industry. For the example of the illustration we make use of a plate configuration.

2) Wet side or portion of the heat exchange surface means that portion having evaporative liquid on or in its surface, thus enabling evaporative cooling of the surface and the absorption of latent heat from the air which passes over this surface.

3) Working stream or working fluid stream is the liquid flow that flows along the heat exchange surface inside the cavity / channels of cooling plates, fluid passes through the fins and wall through capillary action inside the surface to the wet outer side and picks up vapor and by evaporation takes latent heat from the heat exchange surface and transports it out into the exhaust. In some embodiments, the working stream may be disposed of as waste and in others it may be used for special purposes, such as adding humidity or scavenging heat.

4) The fluid stream flow through cavity / channels of the cooling plates the fluid passes along the fins and wall of the plates wherein heat exchange on the wet surface and is cooled by the absorption of heat by the air stream absorbing latent heat by the evaporation in the wet area.

The cooling plate also has passageways or perforations or transfer means between the two plates and the cavity / channels in defined areas providing flow from the one plate to another plate cavity / channels to the working wet channels in which direct evaporative cooling takes place.

It is therefore on object of the invention to provide an evaporative cooling plates having perforations allowing flow from dry channels to wet channels for the heat exchange.

It is another object of the invention to provide an evaporative cooler having a temperature gradient across the surface of the plate, and thus providing fluid stream channels.

It is another object of the invention to provide an evaporative cooling plates allowing the fluid for use in cooling, in particular, the fluid streams exiting with super absorbent gel to hold the extra fluid for continuous and even capillary diffusion of water into fins.

It is another object of the invention to provide an evaporative cooling plates having efficient wicking action allowing easy wetting of substantially all of the surface area of the fins without excess water that cools air.

It is another object of the invention to provide an evaporative cooling plates having cavity / channels as feeders wicks providing water uniformly to all fins through channels of the device.

Additional objects of the present invention will become apparent from the following description. The method and apparatus of the present invention will be better understood by reference to the following detailed discussion of specific embodiments and the attached figures which illustrate and exemplify such embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS:

Figure 1 illustrates the unit of Said evaporative cooling plates.

Figure 2 illustrates arranging the plurality of units in any directions either vertically, horizontally

Figure 3 illustrates different possible designs of Fins of cooling plates that increase surface area to increase heat exchange between hot air and evaporating plates.

Figure 4 illustrates possible application of making Evaporative cooling plates based air cooler can be manufactured in capsized form as compared to conventional evaporative cooler.

Figure 5 illustrates possible application to retrofit said cooling plates on outer cooling unit of air conditioners to increase temperature operation rage i.e ~>50?c and operation efficiency.

Figure 6 illustrates possible application to use for animal house, Storage where humidity and cooling is desired.

Figure 7 illustrates structural design of a cooling plates unite where super absorbent polymer which absorbs water and allows it to diffuse water into fins by capillary action.

DETAILED DESCRIPTION OF THE INVENTION:

The evaporative cooling in the present invention cooling plates holds fluid / water which moist outer side of the wall by wicking action, the air has an ability to absorb moisture that it comes in contact with. The amount of moisture that the air will absorb depends on the condition of the air, or specifically, (i) how much moisture the air already contains and (ii) the temperature of the air. If the air is warm and contains only a small amount of moisture, then it will more readily absorb moisture.

As air cools, its volume decreases, and with it, its ability to absorb moisture decreases.

The term “relative humidity” describes the quantity of water in the air in relation to its total capacity. Any volume of air at any given temperature has an ability to hold a certain quantity of moisture. If the air contains 20% of its total capacity to hold moisture, the relative humidity is said to be 20%. A relative humidity of 100% indicates that the air at this temperature and pressure is holding all the moisture it can. If the air has a low relative humidity when entering an evaporative cooler (explained in the next section), then it has the ability to hold more moisture, and will thus evaporate more water and cool more effectively.

Evaporative cooling occurs when water is brought in contact with air that has a wet bulb temperature lower than that of the water. As the air and water remain in contact, the heat required for evaporation is taken from the water and the air causing both the water and the air to be cooled. Therefore, evaporative cooling by cooling plates can be used to cool water or air. For the system of the present invention, evaporative cooling plates is used to directly cool water, which in turn cools air. Therefore system may be considered to cool both water and air.

The amount of cooling that can be accomplished through the evaporative process depends on the humidity level of the air the dryer the air, the greater the evaporative cooling potential. However, the water and/or air cannot be cooled by evaporative cooling to a temperature lower than the wet bulb temperature of the air. The wet bulb temperature can be measured by placing a wet wick over a thermometer and blowing air across it. For example, on a day when the dry bulb temperature is 35°C and the relative humidity is 50%, the corresponding wet bulb temperature is 25°C the lower limit for evaporative cooling.

When a liquid changes to a vapor, it evaporates and absorbs heat. One Gram of water evaporation in 1 second can absorb about 2.43 KW heat at a temperature of 30?C.

Evaporative cooling plates get their name from this process. These cooling plates are affixed and air is blow over a water-soaked cooling plates. As the water evaporates, it cools the air. Various models are available that mount in air coolers, mounted on air conditioner unit to cool the immediate atmosphere air conditioner unit which will increase efficiency of air conditioner; mounted on the roof, wall or window.

The present invention evaporative cooling plates are “direct” type wherein outside air is blow over the wet cooling plates and then into your home. This will increase the humidity. Slightly higher indoor humidity usually isn't a problem for many inland areas. Another type of evaporative cooling plates is called “indirect.” This type of cooling plates puts no outer unit of the cooling to cool the immediate atmosphere near the cooling unit wherein additional humidity is controlled by the unit into the indoor air.

The following preferred embodiment as exemplified by the drawings is illustrative of the invention and is not intended to limit the invention as encompassed by the claims of the application. An apparatus and method for indirectly evaporative cooling plates the ambient air is disclosed herein. As will be appreciated by those persons skilled in the art, a major advantage provided by the present invention is cooling air by utilizing a simple, efficient apparatus which has a high efficiency, uses a minimum of energy, and consumes a minimum of space.

Referring now to FIG. 1, which is the structure of Unit/plate of Ceramic cooling plates. One can make any size and shape of membrane by arranging plurality of units in any directions either vertically, horizontally as shown in FIG 2.

Referring to FIG 3, the system relates to the flow of water in the Ceramic unit. As shown in the figure water (10) enters through an inlet and then is circulated in the remaining unit of the membrane. The circulation is illustrated in the figure as 11.

The evaporative cooling plates 100 comprises
i) a planar sheets with fins (4) of ceramic (1) extending longitudinally and laterally;
ii) a cavity(2) in which the water is pass;
iii) a cavity(2) is lined with polymer membrane (3) .
iv) a coating between the ceramic membrane and the gel.

The cooling plates 100, as illustrated generally in FIGS. 1-3 is a unit which can be kept in an enclosure or a housing. The water enters at the upper portion 9 is a collection inlet through which the water enters the unit. The water enters the cavity (2) and is circulated in the unit 11. The cavity 2 is adapted for the intake of the water which is absorbed in the polymer membrane 3. The water enters the ceramic fins 4 from the membrane 3 through capillary action of the membrane 3. The unit illustrated herein is cooled approximately up to 20°C. The cooled ambient air is discharged to the enclosure/housing as shown in FIG 4-6 through the discharge openings/ pore 10. The ambient air stream flows in a straight path from the intake side to the discharge openings propelled by the fan to the user. As the ambient air flows from the plates 4 to the discharge openings/ pore 10, the water flows through cavity 2 to the plates 4 creating an ambient and cool air in the housing or enclosure. A pressure regulator 12 removes the impurities of the water and soften the water increasing the durability of the membrane. Filter prevents clogging of capillaries by impurities or clogging by scaling.

The term Pressure regulator used herein describes a control valve that reduces the input pressure of a fluid to a desired value at its output. This valve brings down the pressure to a safe level before the water reaches any plumbing fixtures.

The term “Water Softeners” used herein is a device or substance that softens hard water by removing certain minerals. It can be any substance that lessens the hardness of water, usually by precipitating or absorbing calcium and magnesium ions.

Water softener reduces maintenance and down time of cooler, while pressure regulator is used to prevent oozing of water due to high pressure”

It might also be noted here that by use of the term “plate”, the applicants do not intend to limit the contour of the surface of the heat exchange plate to a flat shape. Indeed, the term plate may be taken to mean any shape including curved, spiraled, corrugated or otherwise contoured shape that meets the requirements of a particular installation as described in FIG 4. FIG 4 illustrates different possible designs of Fins of cooling plates that increase surface area to increase heat exchange between hot air and evaporating cooling plates.

The diameter of the pores is approximately in the range of 0.01 micrometer to 5 micrometer and average porosity is 30%-50 % Vol.

During the course of some of the herein described evaporative cooling processes, the of plate 4 is cooled by an condensation process that has taken place in the plate 4 by the circulation of water, This cooled condition of the plate 4 can be used to reduce the temperature of the incoming gas (e.g., air) (preferably, without increasing the humidity of the incoming gas). With combination to coolant gas based Air conditioner, high efficiency can be obtained even at high environmental temperature i.e. 45-47 degree centigrade. When such filter is used in outer unit of AC, efficiency can be increased because if pre cools environment air and send across condenser of AC unit. Hence AC needs to work in low temperature gradient and power consumption becomes less.

Figure 5 shows possible application of making Evaporative cooling plates based air cooler can be manufactured in capsized form as compared to conventional evaporative cooler.

Figure 6 Shows possible application to retrofit said cooling plates on outer cooling unit of Air conditioners to increase Temperature operation rage i.e ~>50?c and Operation efficiency.

Figure 7 shows possible application to use for animal house, Storage where humidity and cooling is desired. The structural design of a cooling plates unite wherein super absorbent polymer 2 which absorbs water and allows it to diffuse water into fins 4 by capillary action. Because of this polymer layer, Water does not oozes in dependent part of membrane. Ceramic membrane unit is coated with antimicrobial, insect repellent chemical externally so that it prevents breeding of insect’s i.e mosquitoes, and bacterial, fungal growth over surface.

As used herein Superabsorbent polymers (SAPs) are materials that have the ability to absorb and retain large volumes of water and aqueous solutions. Polymers such as superabsorbent polymer, such as polyacrylamide copolymer, ethylene maleic anhydride copolymer, cross-linked carboxymethylcellulose, polyvinyl alcohol copolymers, cross-linked polyethylene oxide, and starch grafted copolymer of polyacrylonitrile can be used. The superabsorbent can be provide with an air filtration system having an air filter that can be easily removed and replaced.

Figure 8 shows structural design of a cooling plates unite where super absorbent polymer which absorbs water and allows it to diffuse water into fins by capillary action. Because of this polymer layer, Water does not oozes in dependent part of cooling plates. Ceramic cooling plates unit is coated with antimicrobial, insect repellent chemical externally so that it prevents breeding of insect’s i.e mosquitoes, and bacterial, fungal growth over surface.

Therefore, the temperature of the air coming out of the apparatus of the heat transfer surface will be lower than the temperature of the ambient air entering the apparatus. Consequently, the temperature of the air during evaporation of the moisture from the cavity will be lower than the temperature of the ambient air entering the apparatus. As a result, the lower temperature limit of the cooling plate walls will be the dew point of the air entering the apparatus.

By varying the size, shape, and relative positions and locations of the cooling plate walls, greater surface area greater heat transfer efficiencies can be realized in the cooling plate walls. It is optimal to have a thin completely wet surface of cooling plate walls. Such a thin, completely wet surface will evaporate quickly and uniformly. However, this is achieved by uniform movement of the water in the channel / cavity of cooling plate. In order to approach a thin, equally evaporating surface cooling plate walls, the proper porosity of the material having uniform porosity and sizing and placement of the through openings is a design consideration. For example, by uniform size of the pores as one progresses in the direction of air flow, one can approach optimal conditions for heat transfer as water form channel / cavity will move uniformly towards wall by capillary action and pressure differences. Similarly, porosity which are in the direction of the air flow can be provided. Optionally, an increase in the number of sized porosity in the direction of air flow can also be provided. Any combination of pores so provided can achieve the design criteria necessary to the heat transfer efficiencies desired.

It has been further found that various materials can be used for the porous capillary surface of the plates. For example, naturally available hydrophilic material such as clay, ceramic clay, pant fibers, or porous material derived or created from naturally available raw material i.e cotton, molasses etc. after preparing membrane, it is coated with super absorbent polymer layer from inside cavity or non-organic fibers such as polyester, olefin, and nylon, either in fabric form or flocking can be used. These materials are typically bonded to an impermeable substrate such as metal or plastic. Another suitable material is porous plastic in sheet form. Porous plastic may comprise plastic granules, such as PVC, which remain permeable although fused together. An impermeable backing such as paint or thin plastic film is added to the porous plastic.

An exemplary evaporative cooling plates in accordance with the present invention, usable in air cooler or air flow through stacks of cooling plates on buildings, is diagrammatically shown in FIGS. 4 and 6. The evaporative cooling plates 1 inlet aperture of first plate connected with fluid outlet of reservoir, the outlet aperture of first plate and the inlet aperture of second plate are attached for fluid communication in consecutive multiple pates are connected with each other with inlet aperture, an outlet aperture of cavity with the fluid communication in all the connected plates consists of even flow of cooling fluid, a water circulating pump 13 and a fan 14 wherein water-to-air heat on cooling plates walls 12. The heat exchanged on cooling plates walls 12 that is shown is a porous matrix, more preferably made of ceramic or clay porous matrix material. The evaporative cooler, or “swamp” cooler design arts that the heat exchange cooling plates walls 12 optionally made such as, by way of example, fins to form a matrix of fines lines precisely spaced both vertically and horizontally to increase surface area for heat exchange between wet walls of cooling plates and air.

An exemplary evaporative cooling plates in accordance with the present invention, usable on air conditioner, is diagrammatically shown in FIGS. 5. The evaporative cooling plates are attached or fixed around the air conditioner unit. The evaporative cooling plates 1 inlet aperture of first plate connected with water outlet of air conditioner unit, the outlet aperture of first plate and the inlet aperture of second plate are attached for fluid communication in consecutive multiple pates are connected with each other with inlet aperture, an outlet aperture of cavity with the fluid communication in all the connected plates consists of even flow of water circulated form air conditioner and a fan of air conditioner unit, water-to-air heat on cooling plates walls 12. The heat exchanged on cooling plate wall 12 reduces the temperature around the air conditioner unit which will increase the efficiency of air conditioner functioning even at higher temperature.

It is to be understood that the above-described representation of the present invention is not intended to restrict the present invention since many more modifications may be made within the scope of the claims without departing from the spirit thereof.