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Title:
DOMESTIC AIR COOLER WITH AN INBUILT COMPACT/MINI COMPRESSOR WATER CHILLER
Document Type and Number:
WIPO Patent Application WO/2019/025873
Kind Code:
A1
Abstract:
The present disclosure relates to an air cooler with an inbuilt compact/mini compressor water air chilling device which cools water in storage of the air cooler and thereby enables to provide a cooled air to an outlet or dispenser, such as a faucet or the like. An aspect of the present disclosure relates to an air cooler to provide a cooled air to an outlet or dispenser. The air cooler includes a cooling tank having water, and a chiller unit positioned within said cooling tank. In an aspect, the chiller unit is operable to maintain a water temperature within the cooling tank lower than atmospheric temperature outside the cooling tank.

Inventors:
JAIN, Gaurav (36 4th Floor, Shanti Vihar, Delhi 2, 110092, IN)
Application Number:
IB2018/050619
Publication Date:
February 07, 2019
Filing Date:
February 01, 2018
Export Citation:
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Assignee:
JAIN, Gaurav (36 4th Floor, Shanti Vihar, Delhi 2, 110092, IN)
International Classes:
F24F1/02; F25D1/00
Attorney, Agent or Firm:
SAIRAM, Rajeswari (Level 2, KLJ Tower NorthB5 District Centre,Netaji Subhash Place,Wazirpur, New Delhi 4, 110034, IN)
Download PDF:
Claims:
I CLAIM:

1. An air cooler to provide a cooled air to an outlet or dispenser, the air cooler device comprising:

a cooling tank having a water; and

a chiller unit positioned within said cooling tank, wherein the chiller unit is operable to maintain a water temperature within the cooling tank lower than atmospheric temperature outside the cooling tank.

2. The air cooler as claimed in claim 1, wherein the chiller unit comprises a compressor, one or more evaporator tubes or condenser, a capacitor and a fan with motor to implement a vapor-compression refrigeration cycle, and utilizes one or more refrigerants to achieve a refrigeration effect.

3. The air cooler as claimed in claim 2, wherein the one or more refrigerants are selected from any or combination of perfluorocarbons (FCs), hydrofluorocarbons (HFCs), chlorofluorocarbons (CFCs) and hydro chlorofluorocarbons (HCFCs). 4. The air cooler as claimed in claim 2, wherein the compressor is adapted to pump the one or more refrigerants in compressed refrigerant form to the condenser that rejects heat energy from the compressed refrigerant to form cooling water or gas refrigerant.

5. The air cooler as claimed in claim 4, wherein the transfer of heat enables the gas to condense into a liquid refrigerant and restricts the flow of liquid refrigerant which causes a drop in pressure, thereby causing the warm refrigerant liquid to change phase from liquid to gas and in doing so absorbs heat from the water within said cooling tank to be cooled due to adiabatic flash evaporation.

6. The air cooler as claimed in claim 1, wherein said cooling tank being adapted to connect to a water supply or to store the water.

7. The air cooler as claimed in claim 1, wherein the air cooler operates based on water's large enthalpy of vaporization.

8. The air cooler as claimed in claim 1, wherein the chiller unit further comprises one or more pipes to circulate one or more refrigerants to achieve a refrigeration effect for cooling the water temperature within the cooling tank.

9. The air cooler as claimed in claim 1, wherein said air cooling device is characterized in that it delivers cool air with less humidity, low power consumption and less water consumption, preferably 50% less water consumption.

AMENDED CLAIMS

received by the International Bureau on 03 December 2018 (03.12.18)

1. An air cooler (100) to provide a cooled air to an outlet or dispenser, the air cooler device comprising:

a cooling tank having a water; and

wherein said air cooler (100) is characterized in that comprising:

a chiller unit (102) positioned within said cooling tank, the chiller unit comprises a compressor (106) utilizes one or more refrigerants to achieve a refrigeration effect, one or more evaporator tubes or a condenser (112), a capacitor (110), a fan with motor (108), and one or more pipes (104-1, 104-2) immersed in said water to implement a vapor- compression refrigeration cycle, the chiller unit is operable to maintain a water temperature within the cooling tank lower than atmospheric temperature outside the cooling tank,

wherein said one or more pipes (104-1, 104-2) circulates one or more refrigerants to achieve a refrigeration effect for cooling the water temperature within the cooling tank, and wherein a cooled air from the chiller unit is passed to the water using a first pipe of said one or more pipes (104-1), and a warm air from said cooling tank is passed to the chiller unit (102) through a second of said one or more pipes (104-2).

2. The air cooler as claimed in claim 1, wherein the one or more refrigerants are selected from any or combination of perfluorocarbons (FCs), hydrofluorocarbons (HFCs), chlorofluorocarbons (CFCs) and hydro chlorofluorocarbons (HCFCs).

3. The air cooler as claimed in claim 1, wherein the compressor is adapted to pump the one or more refrigerants in compressed refrigerant form to the condenser that rejects heat energy from the compressed refrigerant to form cooling water or gas refrigerant.

4. The air cooler as claimed in claim 3, wherein the transfer of heat enables the gas to condense into a liquid refrigerant and restricts the flow of liquid refrigerant which causes a drop in pressure, thereby causing the warm refrigerant liquid to change phase from liquid to gas and in doing so absorbs heat from the water within said cooling tank to be cooled due to adiabatic flash evaporation.

5. The air cooler as claimed in claim 1, wherein said cooling tank being adapted to connect to a water supply or to store the water.

6. The air cooler as claimed in claim 1, wherein the air cooler operates based on water's large enthalpy of vaporization.

7. The air cooler as claimed in claim 1, wherein said air cooling device delivers cool air with less humidity, low power consumption and less water consumption, preferably 50% less water consumption.

Description:
DOMESTIC AIR COOLER WITH AN INBUILT COMPACT/MINI COMPRESSOR

WATER CHILLER

Field of the Invention

[0001] The present disclosure relates generally to air cooling devices, and more particularly, to an air cooler with an inbuilt compact/mini compressor water air chilling unit which cools water in a storage of the air cooler and thereby enables to provide a cooled air to an outlet, such as a fan or the like. Background

[0002] The background description includes information that may be useful in understanding present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.

[0003] An evaporative cooler (also swamp cooler, desert cooler and wet air cooler) is a device that cools air through the evaporation of water. Evaporative cooling differs from typical air conditioning systems, which use vapor-compression or absorption refrigeration cycles. Evaporative cooling works by exploiting water's large enthalpy of vaporization. The temperature of dry air can be dropped significantly through the phase transition of liquid water to water vapor (evaporation). This can cool air using much less energy than refrigeration. In extremely dry climates, evaporative cooling of air has the added benefit of conditioning the air with more moisture for the comfort of building occupants.

[0004] The cooling potential for evaporative cooling is dependent on the wet bulb depression, the difference between dry-bulb temperature and wet-bulb temperature. In arid climates, evaporative cooling can reduce energy consumption and total equipment for conditioning as an alternative to compressor-based cooling. In climates not considered arid, indirect evaporative cooling can still take advantage of the evaporative cooling process without increasing humidity. Passive evaporative cooling strategies offer the same benefits of mechanical evaporative cooling systems without the complexity of equipment and ductwork.

[0005] Evaporative coolers lower the temperature of air using the principle of evaporative cooling, unlike typical air conditioning systems which use vapor-compression refrigeration or absorption refrigerator. Evaporative cooling is the conversion of liquid water into vapor using the thermal energy in the air, resulting in a lower air temperature. The energy needed to evaporate the water is taken from the air in the form of sensible heat, which affects the temperature of the air, and converted into latent heat, the energy present in the water vapor component of the air, whilst the air remains at a constant enthalpy value. This conversion of sensible heat to latent heat is known as an isenthalpic process because it occurs at a constant enthalpy value. Evaporative cooling therefore causes a drop in the temperature of air proportional to the sensible heat drop and an increase in humidity proportional to the latent heat gain. Evaporative cooling can be visualized using a psychrometric chart by finding the initial air condition and moving along a line of constant enthalpy toward a state of higher humidity.

[0006] A simple example of natural evaporative cooling is perspiration, or sweat, secreted by the body, evaporation of which cools the body. The amount of heat transfer depends on the evaporation rate, however for each kilogram of water vaporized 2,257 kJ of energy (about 890 BTU per pound of pure water, at 95 °F (35 °C)) are transferred. The evaporation rate depends on the temperature and humidity of the air, which is why sweat accumulates more on humid days, as it does not evaporate fast enough.

[0007] Vapor-compression refrigeration uses evaporative cooling, but the evaporated vapor is within a sealed system, and is then compressed ready to evaporate again, using energy to do so. A simple evaporative cooler's water is evaporated into the environment, and not recovered. In an interior space cooling unit, the evaporated water is introduced into the space along with the now-cooled air; in an evaporative tower the evaporated water is carried off in the airflow exhaust.

[0008] Having said the above, since long time air coolers are used in countries like

India, Bangladesh, Pakistan, etc. Such air coolers are generally built on a tank preferably in square shape with depth to contain and hold water. Water pumps are installed to uplift to the water for the said tank with use of small water pumps which thereafter is spread over the three enclosed pores walls filled with water absorbent materials. On the fourth vertical side, a fan is fitted which pulls the cool air with water droplets from the cooler in the outer direction. It often would be advantageous to maintain internal temperature near or below the external temperature.

[0009] However, existing air coolers available in the market today are inefficient in terms of performance, comfort, water use, and maintenance frequency. With regards to the performance, most evaporative coolers are unable to lower the air temperature as much as refrigerated air conditioning can. Further, when used in high dew point (humidity) conditions decreases the cooling capability of the evaporative cooler. Furthermore, there exists no dehumidification. Traditional air conditioners remove moisture from the air, except in very dry locations where recirculation can lead to a buildup of humidity. Evaporative cooling adds moisture, and in humid climates, dryness may improve thermal comfort at higher temperatures.

[0010] With regards to comfort, the air supplied by the evaporative cooler is generally

80-90% relative humidity and can cause interior humidity levels as high as 65%; very humid air reduces the evaporation rate of moisture from the skin, nose, lungs, and eyes. Further, high humidity in air accelerates corrosion, particularly in the presence of dust. This can considerably reduce the life of electronics and other equipment. Furthermore, high humidity in air may cause condensation of water. This can be a problem for some situations (e.g., electrical equipment, computers, paper, books, old wood). Odors and other outdoor contaminants may be blown into the building unless sufficient filtering is in place.

[0011] With regards to water use, evaporative coolers require a constant supply of water to wet the pads. Further, water high in mineral content (hard water) will leave mineral deposits on the pads and interior of the cooler. Depending on the type and concentration of minerals, possible safety hazards during the replacement and waste removal of the pads could be present. Bleed-off and refill (purge pump) systems can reduce but not eliminate this problem. Installation of an inline water filter (refrigerator drinking water / ice maker type) will drastically reduce the mineral deposits.

[0012] With regards to maintenance frequency, any mechanical components that can rust or corrode need regular cleaning or replacement due to the environment of high moisture and potentially heavy mineral deposits in areas with hard water. Further, evaporative media must be replaced on a regular basis to maintain cooling performance. Wood wool pads are inexpensive but require replacement every few months. Higher-efficiency rigid media is much more expensive but will last for a number of years proportional to the water hardness; in areas with very hard water, rigid media may only last for two years before mineral scale build-up unacceptably degrades performance. In areas with cold winters, evaporative coolers must be drained and winterized to protect the water line and cooler from freeze damage and then de- winterized prior to the cooling season.

[0013] In view of the above issues and problem available in the prior-art, there exists a dire need to provide an improved and enhanced air cooler which solves at least one or few of the problems available in the prior-art recited above. There is also a need to provide an assistance system to air cooler, also applicable and/or suitable for convention air coolers, which assist the air cooler to enhance and/or improve its working and functionalities.

[0014] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.

[0015] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, reaction conditions, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term "about." Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.

[0016] As used in the description herein and throughout the claims that follow, the meaning of "a," "an," and "the" includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of "in" includes "in" and "on" unless the context clearly dictates otherwise.

[0017] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. "such as") provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.

[0018] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.

Summary

[0019] The present disclosure relates generally to cooling devices, and more particularly, to an air cooler with an inbuilt compact/mini compressor water air chilling device which cools water in a storage of the air cooler and thereby enables to provide a cooled air to an outlet or dispenser, such as a fan or the like.

[0020] Embodiment of the present disclosure provides domestic air cooler with an inbuilt compact/mini compressor water chiller.

[0021] An aspect of the present disclosure relates to an air cooler to provide a cooled air to an outlet or dispenser. The air cooler includes a cooling tank having water, and a chiller unit positioned within said cooling tank. In an aspect, the chiller unit is operable to maintain a water temperature within the cooling tank lower than atmospheric temperature outside the cooling tank.

[0022] In an aspect, the chiller unit comprises a compressor 106, one or more evaporator tubes or condenser 112, a capacitor 110, and a fan with motor 108 to implement a vapor-compression refrigeration cycle, and utilizes one or more refrigerants to achieve a refrigeration effect.

[0023] In an aspect, the one or more refrigerants are selected from any or combination of perfluorocarbons (FCs), hydrofluorocarbons (HFCs) chlorofluorocarbons (CFCs) and hydro chlorofluorocarbons (HCFCs).

[0024] In an aspect, the compressor pumps the one or more refrigerants in compressed refrigerant form to the condenser that rejects heat energy from the compressed refrigerant to form cooling water or gas refrigerant. [0025] In an aspect, the transfer of heat enables the gas to condense into a liquid refrigerant which restricts the flow of liquid refrigerant which causes a drop in pressure, thereby causing the warm refrigerant liquid to change phase from liquid to gas and in doing so absorbs heat from the water within said cooling tank to be cooled due to adiabatic flash evaporation.

[0026] In an aspect, the cooling tank being adapted to connect to a water supply or to store the water.

[0027] In an aspect, the air cooler operates based on water's large enthalpy of vaporization.

[0028] In an aspect, the chiller unit further comprises one or more pipes to circulate one or more refrigerants to achieve a refrigeration effect for cooling the water temperature within the cooling tank.

[0029] In an aspect, the air cooler further includes one or more sensors and a display unit.

[0030] In an aspect, the sensors can be IR sensors to control the temperature using a remote.

[0031] In an aspect, the temperature can be also controlled by knob or physical buttons on the outer body of the air cooler.

[0032] In an aspect, the display can be LED display OR OLED to display the temperature along with other indications

[0033] In an aspect, the air cooler further includes a temperature regulating device adapted to control the temperature of the cool air from the air cooler.

[0034] In an aspect, said air cooling device is characterized in that it delivers cool air with less humidity, low power consumption and less water consumption, preferably 50% less water consumption.

[0035] In contrast to the conventional air cooler, the proposed air cooler incorporated with the water chiller provides an effective replacement to air conditioners. Also, the proposed air cooler incorporated with the water chiller enables to reduce cost of electricity/power consumption substantially when compared with the conventional air conditioner. The proposed air cooler incorporated with the water chiller operates on a technique of water chiller which regulates the provided water at a very lower temperature.

[0036] In contrast to the conventional air conditioner, the proposed air cooler incorporated with the water chiller consumes less electricity/power, enable faster cooling, and provides more humidity as compared to the conventional air conditioner. Further, as compared to the conventional air conditioner, the proposed air cooler are easy to handle and much cost effective. Further, since the proposed air cooler consumes less electricity/power, the proposed air coolers can operate on household inverters easily.

[0037] Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components. Brief Description of Drawings

[0038] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The diagrams are for illustration only, which thus is not a limitation of the present disclosure, and wherein:

[0039] FIG. 1 illustrates a proposed air cooler, in accordance with an exemplary embodiment of the present disclosure.

[0040] FIG. 2 illustrates an exemplary positon of a proposed chiller unit in the proposed air cooler, in accordance with an exemplary embodiment of the present disclosure.

[0041] FIGs. 3A-3B illustrates various components of the proposed chiller unit, in accordance with an exemplary embodiment of the present disclosure.

Detailed Description of the Invention

[0042] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.

[0043] In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present invention. It will be apparent to one skilled in the art that embodiments of the present invention may be practiced without some of these specific details. [0044] If the specification states a component or feature "may", "can", "could", or

"might" be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.

[0045] As used in the description herein and throughout the claims that follow, the meaning of "a," "an," and "the" includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of "in" includes "in" and "on" unless the context clearly dictates otherwise.

[0046] Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. These exemplary embodiments are provided only for illustrative purposes and so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art. The invention disclosed may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Various modifications will be readily apparent to persons skilled in the art.

[0047] The general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the invention. Moreover, all statements herein reciting embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure). Also, the terminology and phraseology used is for the purpose of describing exemplary embodiments and should not be considered limiting. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure the present invention.

[0048] Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the "invention" may in some cases refer to certain specific embodiments only. In other cases it will be recognized that references to the "invention" will refer to subject matter recited in one or more, but not necessarily all, of the claims. [0049] All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., "such as") provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.

[0050] Various terms as used herein are shown below. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.

[0051] The present disclosure relates generally to cooling devices, and more particularly, to an air cooler with an inbuilt compact/mini compressor water air chilling device which cools water in a storage of the air cooler and thereby enables to provide a cooled air to an outlet or dispenser, such as a faucet or the like.

[0052] Embodiments of the present disclosure relates to an air cooler installed with an inbuilt small and compact sized water chiller. The water chiller is preferably based on a miniature/compact compressor technology. Such technology incorporated into the water chiller enables the air cooler to maintain water temperature lower than the usual temperature at which the existing product lines available in the market performs/operates.

[0053] In an exemplary embodiment, the proposed water chiller uses a technique to lower the water temperature which ultimately performs a better cooling breeze and cooling effect in the domestic use.

[0054] In an exemplary embodiment, the air cooler incorporated with the proposed water chiller can be made in different sizes and shapes/models which can be utilized in accordance with the use/requirements of the user making it more user-friendly and accommodable.

[0055] In an embodiment, the present invention provides an air cooler incorporated with a mini-compressor (also interchangeably referred to as "chiller" or "water chiller" hereafter). In an exemplary embodiment, the proposed air cooler according to the present disclosure can be described in between an air cooler and air conditioning unit with respect to its usage and usefulness. [0056] In an exemplary embodiment, the proposed air cooler delivers cool air with less humidity and low power consumption.

[0057] In an exemplary embodiment, the proposed air cooler delivers economics value and saving against the existing product.

[0058] In an embodiment, the proposed air cooler incorporated with the water chiller operates on cold water for which the temperature is preferably in the range of 5 degree to 15 degree Celsius.

[0059] In exemplary embodiment, the proposed air cooler is small, compact, and consumes less power as compared to the conventional air conditioner.

[0060] In an exemplary embodiment, the proposed air cooler produces less humidity due to cold water circulation as a part of inbuilt process.

[0061] An aspect of the present disclosure relates to an air cooler to provide a cooled air to an outlet or dispenser. The air cooler includes a cooling tank having water, and a chiller unit positioned within said cooling tank. In an aspect, the chiller unit is operable to maintain a water temperature within the cooling tank lower than atmospheric temperature outside the cooling tank.

[0062] In an aspect, the chiller unit comprises a compressor, one or more evaporator tubes or condenser, a capacitor, and device fan with motor to implement a vapor-compression refrigeration cycle, and utilizes one or more refrigerants to achieve a refrigeration effect.

[0063] In an aspect, the one or more refrigerants are selected from any or combination of perfluorocarbons (FCs), hydrofluorocarbons (HFCs) chlorofluorocarbons (CFCs) and hydro chlorofluorocarbons (HCFCs).

[0064] In an aspect, the compressor pumps the one or more refrigerants in compressed refrigerant form to the condenser that rejects heat energy from the compressed refrigerant to form cooling water or gas refrigerant.

[0065] In an aspect, the transfer of heat enables the gas to condense into a liquid refrigerant which restricts the flow of liquid refrigerant which causes a drop in pressure, thereby causing the warm refrigerant liquid to change phase from liquid to gas and in doing so absorbs heat from the water within said cooling tank to be cooled due to adiabatic flash evaporation.

[0066] In an aspect, the cooling tank being adapted to connect to a water supply or to store the water. [0067] In an aspect, the air cooler operates based on water's large enthalpy of vaporization.

[0068] In an aspect, the chiller unit further comprises one or more pipes to circulate one or more refrigerants to achieve a refrigeration effect for cooling the water temperature within the cooling tank.

[0069] In an aspect, said air cooling device is characterized in that it delivers cool air with less humidity, low power consumption and less water consumption, preferably 50% less water consumption.

[0070] FIG. 1 illustrates a proposed air cooler, in accordance with an exemplary embodiment of the present disclosure. As shown, a proposed air cooler 100 is incorporated with a proposed chiller unit 102.

[0071] FIG. 2 illustrates an exemplary positon of a proposed chiller unit in the proposed air cooler, in accordance with an exemplary embodiment of the present disclosure.

[0072] In an exemplary embodiment, the proposed chiller unit is proposed to be set in cut-out area of the air cooler.

[0073] The cut-out area is also used for the cross-ventilation and it also protects the compressor for excessive heating.

[0074] In an exemplary embodiment, the air cooler 100 can be any device for cooling the air inside a building, room, or vehicle. Air coolers are used in thermally insulated casings to form refrigerators and are also used in buildings to cool rooms. In buildings they are only required when the building itself is not constructed so that it is able to dissipate enough heat. Methods to construct buildings in such a fashion that additional air coolers are not required are e.g., earth sheltering or specific building design.

[0075] In an exemplary embodiment, the air cooler 100 can be an evaporative cooler (also swamp cooler, desert cooler and wet air cooler) is a device that cools air through the evaporation of water. Evaporative cooling differs from typical air conditioning systems, which use vapor-compression or absorption refrigeration cycles. Evaporative cooling works by exploiting water's large enthalpy of vaporization. The temperature of dry air can be dropped significantly through the phase transition of liquid water to water vapor (evaporation). This can cool air using much less energy than refrigeration. In extremely dry climates, evaporative cooling of air has the added benefit of conditioning the air with more moisture for the comfort of building occupants. [0076] In an exemplary embodiment, the cooling potential for evaporative cooling is dependent on the wet bulb depression, the difference between dry-bulb temperature and wet- bulb temperature. In arid climates, evaporative cooling can reduce energy consumption and total equipment for conditioning as an alternative to compressor-based cooling. In climates not considered arid, indirect evaporative cooling can still take advantage of the evaporative cooling process without increasing humidity. Passive evaporative cooling strategies offer the same benefits of mechanical evaporative cooling systems without the complexity of equipment and ductwork.

[0077] In an exemplary implementation, air cooler 100 may lower the temperature of air using the principle of evaporative cooling, unlike typical air conditioning systems which use vapor-compression refrigeration or absorption refrigerator. Evaporative cooling is the conversion of liquid water into vapor using the thermal energy in the air, resulting in a lower air temperature. The energy needed to evaporate the water is taken from the air in the form of sensible heat, which affects the temperature of the air, and converted into latent heat, the energy present in the water vapor component of the air, whilst the air remains at a constant enthalpy value. This conversion of sensible heat to latent heat is known as an isenthalpic process because it occurs at a constant enthalpy value. Evaporative cooling therefore causes a drop in the temperature of air proportional to the sensible heat drop and an increase in humidity proportional to the latent heat gain. Evaporative cooling can be visualized using a psychrometric chart by finding the initial air condition and moving along a line of constant enthalpy toward a state of higher humidity.

[0078] In an exemplary embodiment, the chiller unit 102 is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle. This liquid can then be circulated through a heat exchanger to cool equipment, or another process stream (such as air or process water). As a necessary by product, refrigeration creates waste heat that must be exhausted to ambience, or for greater efficiency, recovered for heating purpose.

[0079] In an exemplary embodiment, the chilled water produced by the chiller unit

102 can used to cool and dehumidify air in mid- to large-size commercial, industrial, and institutional facilities. Water chillers can be water-cooled, air-cooled, or evaporative cooled. Water-cooled systems can provide efficiency and environmental impact advantages over air- cooled systems

[0080] In an exemplary implementation, the chiller unit 102 can operate based on vapor-compression chiller technology. In an example, there can be four basic types of compressors used in vapor compression chillers: Reciprocating compression, scroll compression, screw-driven compression, and centrifugal compression are all mechanical machines that can be powered by electric motors, steam, or gas turbines. They produce their cooling effect via the reverse-Rankine cycle, also known as vapor-compression. With evaporative cooling heat rejection, their coefficients of performance (COPs) are very high; typically 4.0 or more.

[0081] In another exemplary implementation, the current vapor-compression chiller technology is based on the "reverse-Rankine" cycle known as vapor-compression.

[0082] In an exemplary working, refrigeration compressors are essentially a pump for refrigerant gas. The capacity of the compressor, and hence the chiller cooling capacity, is measured in kilowatts input (kW), Horse power input (HP), or volumetric flow (m3/h, ft3/h). The mechanism for compressing refrigerant gas differs between compressors, and each has its own application. Common refrigeration compressors include reciprocating, scroll, screw, or centrifugal. These can be powered by electric motors, steam turbines, or gas turbines. Compressors can have an integrated motor from a specific manufacturer, or be open drive- allowing the connection to another type of mechanical connection. Compressors can also be either Hermetic (welded closed) or semi hermetic (bolted together).

[0083] Condensers can be air-cooled, water-cooled, or evaporative. The condenser is a heat exchanger which allows heat to migrate from the refrigerant gas to either water or air. Air cooled condenser are manufactured from copper tubes (for the refrigerant flow) and aluminum fins (for the air flow). Each condenser has a different material cost and they vary in terms of efficiency. With evaporative cooling condensers, their coefficients -of- performance (COPs) are very high; typically 4.0 or more.

[0084] The expansion device or refrigerant metering device (RMD) restricts the flow of the liquid refrigerant causing a pressure drop that vaporizes some of the refrigerant; this vaporization absorbs heat from nearby liquid refrigerant. The RMD is located immediately prior to the evaporator so that the cold gas in the evaporator tubes can absorb heat from the water in the evaporator. There is a sensor for the RMD on the evaporator outlet side which allows the RMD to regulate the refrigerant flow based on the chiller design requirement.

[0085] Evaporators can be plate type or shell and tube type. The evaporator is a heat exchanger which allows the heat energy to migrate from the water stream into the refrigerant gas. During the state change of the remaining liquid to gas, the refrigerant can absorb large amounts of heat without changing temperature. [0086] FIGs. 3A-3B illustrates various components of the proposed chiller unit, in accordance with an exemplary embodiment of the present disclosure.

[0087] Referring now to FIG. 3A, the chiller unit 102 can include a compressor

106, a fan with motor 108, capacitor 110 and one or more evaporator tubes or condensorl l2. The chiller unit 102 typically utilizes HCFC or CFC refrigerants to achieve a refrigeration effect. Compressor 106 is the driving force in chiller unit 102 and act as a pump for the refrigerant.

[0088] Compressed refrigerant gas is sent from the compressor 106 to an evaporator tubes or condensorl l2 unit that rejects the heat energy from the refrigerant to cooling water or air outside of the chiller unit 102.

[0089] The transfer of heat allows the refrigerant gas to condense into a liquid which is then sent to a metering device (not shown). The metering device (not shown) restricts the flow of liquid refrigerant which causes a drop in pressure. The drop in pressure causes the warm refrigerant liquid to change phase from liquid to gas and in doing so absorbs heat from the water to be cooled due to adiabatic flash evaporation.

[0090] The metering device (not shown) is positioned so that the expanding refrigerant gas is contained within the evaporator tubes or condenser 112, transferring the heat energy from the water to be cooled into the refrigerant gas. The warm refrigerant gas is then sent back to the compressor to start the cycle over again and the newly chilled water in the separate loop can now be used for cooling.

[0091] Referring now to FIG. 3B, the pipes 104-1 and 104-2 which may be merged in the water inside the cooling tank. The cooled air from the chiller unit 102 may be passed to the water using at least one of these pipes say via. 104-1, and the warm air from cooling tank is passed to the chiller unit 102 through at least one of these pipes, say via. 104-2.

[0092] In an exemplary implementation, the vapor or heated water dissipated inside the cooling tank 100 in response to which the refrigerant inside the pipe say via. 104-1 is heated and lows upward into the capacitor 110, dissipates heat and converts back to a liquid. The liquid ammonia makes its way to the evaporator tubes or condenser 112 where it mixes with refrigerant and evaporates, producing cool temperatures inside the cooling tank 100.

[0093] As used herein, and unless the context dictates otherwise, the term "coupled to" is intended to include both direct coupling (in which two elements that are coupled to each other or in contact each other) and indirect coupling (in which at least one additional element is located between the two elements). Therefore, the terms "coupled to" and "coupled with" are used synonymously. Within the context of this document terms "coupled to" and "coupled with" are also used euphemistically to mean "communicatively coupled with" over a network, where two or more devices are able to exchange data with each other over the network, possibly via one or more intermediary device.

[0094] Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms "comprises" and "comprising" should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refers to at least one of something selected from the group consisting of A, B, C ....and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc.

[0095] While some embodiments of the present disclosure have been illustrated and described, those are completely exemplary in nature. The disclosure is not limited to the embodiments as elaborated herein only and it would be apparent to those skilled in the art that numerous modifications besides those already described are possible without departing from the inventive concepts herein. All such modifications, changes, variations, substitutions, and equivalents are completely within the scope of the present disclosure. The inventive subject matter, therefore, is not to be restricted except in the spirit of the appended claims.