SYSTEM AND METHOD OF EXTRACTING WATER FROM ATMOSPHERIC AIR

Abstract

Disclosed is a system to extract water from air using a thermoelectric technology/vapor compression cycle with a combined evaporative cooling. The system extracts high quantity of water by creating more humid air inside the enclosed surface using a pre-humidifier cooling pad. Further, the system consumes less time and energy to extract the water in both hot and dry climates. Further, the system includes a condenser, wherein the condenser temperature does not increase more than 37.8 degree Celsius. Further, the system uses hot side management technology to cool the water and uses the water to reduce the condenser temperature therein. Further, mineral deposited waste Reverse Osmosis (RO) water is collected and may be sold to chemical laboratories for further use.

Description

The current application claims a priority to the Indian Provisional Patent application number 201841030143 filed with Indian Patent Office, Chennai on Aug. 10, 2018 entitled “A system and method of extracting water from atmospheric air with dehumidification and cooling using thermoelectric based/vapor Compression cycle combined with evaporative cooling technology”, which is hereby incorporated in its entirety.

FIELD OF THE INVENTION

The present disclosure relates generally to the field of water extraction. More specifically, the present disclosure relates a system and method to extract water from air using a thermoelectric technology/vapor compression cycle combined with a combined evaporative cooling.

BACKGROUND OF THE INVENTION

Generally, various means have been suggested for generating drinking water. In the recent years, many commercial potable water sources are produced from the ground water, which might be contaminated by pollutants such as pesticides or chemical wastes. Generally, drinking water needs to be highly purified to avoid an adverse effect on those who drink the water for a long period of time. In most of the developed countries, the tap water is generally purified to reach the standards and is used for direct drinking purposes. However, there are still many poorer regions in the world with a relatively high prevalence rate and mortality rate due to the pollution of the water source. Taking the ground water on a large scale may lead to severe problems such as decreasing the ground level of water and shortage of needed water supplies or other environmental problems. Thus, it is needed to provide an alternate source for generation of pure drinking water.

An alternate solution is proposed to generate the drinking water from pure moisture in the atmosphere. Atmospheric air plays a leading role in transport of water and can be tapped as a source of water. The atmospheric air contains a lot of moisture in vapour form and is cooled below dew point to condense the water therein. The condensation of moisture in the atmosphere depends on the degree of moisture and cooling.

Various types of conventional systems and methods to extract water from outside air are known in the prior art. Conventional systems for generating drinking water from atmospheric air comprise a refrigeration system arranged with an evaporator coil for cooling and maintaining the temperature of the atmospheric air below the dew point. A water generating chamber is arranged to enclose the evaporator coil, so that the cold air from the evaporator coil is directed inside the chamber. A water collecting unit is in association with the chamber for collecting water droplets dripped down from the chamber. At least a portion of the chamber is formed of inverted pyramid shape, which is associated with the evaporator coil in such a way that water vapor present in the cold air condenses inside the inverted pyramid portion, which forms and drips the water droplets on the inner surface of the inverted pyramid portion to the water collecting unit. Such system and method increases the efficiency of water generation from the atmospheric air due to the rapid formation of water droplets and reduces the power consumption for cooling by increasing the refrigeration efficiency.

Further, known renewable energy-based atmospheric water generators include an atmospheric potable water generator apparatus and method of use, powered entirely by renewable energy sources, which generates water from atmospheric air. The apparatus uses solar energy to heat atmospheric air in a condensing air chamber, uses wind to cool the air, condenses water on a cooling surface thereby creating potable water from atmospheric air. The apparatus may be used off the energy grid and can be applied on a large scale or for personal portable use.

Further, known systems for collecting water from air collect the moisture contained in the atmosphere and condenses it into high purity water. In one embodiment, moist air entering the water making/water cooling system flows across an air filter, then a pre-cooler heat exchanger (where the air stream is cooled to or close to its dew point) and then a water extraction heat exchanger, where the air stream is cooled further and water is extracted. The water that leaves water extraction heat exchanger is collected in a water collection device and passes from there through a primary water filter into a water storage tank. The air stream then passes across a reheat heat exchanger and exhausted to the outside. A water circulation pump extracts water from the water storage tank and circulates the water stream through an evaporator of a vapor compression refrigeration system, where the water stream is chilled, then through the water extraction heat exchanger and pre-cooler, where the incoming air stream is chilled by removing heat to the water stream. The water stream is then circulated through the reheat heat exchanger, where the water stream is again cooled by removing heat to the cool dry air exiting the water extraction heat exchanger. Finally, the cooled water stream is circulated through the water filter to a three-way valve, that directs water flow either to a dispenser or back to the water storage tank.

The conventional systems and methods consume more time and energy to extract the water in both hot and dry climates. Typically, the conventional systems use a bulk compressor and require skilled labor to service thereof, during wear out operations in remote places. The conventional systems do not extract a high quantity of water by creating more humid air inside the enclosed surface using an evaporative cooling pad. Further, the conventional systems do not use a thermo-electric engine to condensate the water content in the humid air. Conventional systems do not use non-potable waste water to flow through the evaporative cooling pad to create more humid air inside the enclosed surface.

Therefore, there is a need for a system and method to extract a high quantity of water in lesser time using low power consumption.

SUMMARY

This summary is provided to introduce a selection of concepts in a simplified form, that are further described below in the Detailed Description. This summary is not intended to identify key features or essential features of the claimed subject matter. Nor is this summary intended to be used to limit the claimed subject matter's scope.

According to some embodiments, a system of extracting water from atmospheric air with dehumidification and cooling using thermoelectric based/vapor compression cycle combined with evaporative cooling technology is disclosed. The system includes a compressor to compress the gases to high pressure and temperature therein. Further, the system includes a condenser to receive and convert the gases into a liquid at high pressure and temperature. Further, the system includes a first water tank with at least one pump, wherein the first water tank is filled with non-potable/Reverse Osmosis (RO) waste water, wherein the pump inside the first water tank pumps the non-potable/RO water to a sprinkler, wherein the sprinkler allows the non-potable/RO water to flow on top of the condenser, wherein the water flow controls and manages the temperature inside the condenser below 37.8 degree Celsius. Further, the system includes an expansion valve to expand and decrease the high-pressure liquid to a low-pressure liquid at a lower temperature. Further, the system includes an evaporative coil to receive and convert the low-pressure liquid into a vapor at a lower temperature and fed back to the compressor and thereby constituting the controlled vapor compression cycle. Further, the system includes a hot side management cooling pad, wherein the hot side management cooling pad is fed and pumped with non-potable/RO water from the first water tank, wherein the hot side management cooling pad lowers/cools the water (removes the heat gained from the condenser and creates more humid air before passing through the condenser. Further, the system includes a fan to dissipate the hot dry air from the condenser, during the vaporization cycle.

Further, the present disclosure overcomes the drawbacks in the prior art and provides a system to extract water from air using vapor compression cycle with the condenser temperature managed through an evaporative cooling technology. In an embodiment, the system comprises a compressor to compress the gases to high pressure and temperature therein. This condenser is used to receive and convert the gases into a liquid at high pressure and temperature. The system also contains first water tank with one or more pumps, and specifically the first water tank is filled with non-potable/Reverse Osmosis (RO) waste water. The pump inside the first water tank pumps the non-potable/RO water to a sprinkler, and this sprinkler allows the non-potable/RO water to flow on top of the condenser. Here, the water flow controls and manages the temperature of the condenser below 37.8 degree Celsius.

The expansion valve is used to expand and decrease the high-pressure liquid to a low-pressure liquid at a lower temperature. After this the evaporative coil to receive and convert the low-pressure liquid into a vapor at a lower temperature and fed back to the compressor and thereby constituting the controlled vapor compression cycle. Here, in addition, an evaporative cooling pad is fed and pumped with non-potable/RO water from the first water tank, where this evaporative cooling pad lowers/cools the water (removes the heat gained from the condenser and also creates more humid air before passing through the evaporative coil. The evaporative coil condenses the humid air into the water and is then collected in a second tank. At last this water in the second tank is further filtered and used for drinking purpose. A fan used here dissipates the hot dry air from the condenser, during the vaporization cycle.

In another embodiment, the system comprises an enclosed surface comprising an evaporating cooling pad, an air filter, four tanks, a fan, a louver, a thermoelectric engine having a cold side and a hot side, a multi-flow evaporator having closed loop water circulation, a pre-humidifier, radiator and a water filter unit. Both the pre-humidifier and hot side management tank are filled with non-potable water or waste water. The pre-humidifier cooling pad is fed and pumped with the waste water from the first tank. The fan sucks or draws the air through a louvre from the outside atmosphere and pass through the pre-humidifier cooling pad. The pre-humidifier cooling pad creates more humid air inside the enclosed surface therein.

The thermoelectric engine is energized and thereby the creation of the hot side and the cold side, takes place. The multi-flow evaporator or multi-channel micro flow condenser with the closed loop water circulation is connected to the cold side of the thermoelectric engine. The multi-flow evaporator or multi-channel micro flow condenser having closed loop water circulation is exposed to the humid air to condensate the water content therein. The condensed water is further collected and stored in a second tank. The air with reduced water content/drier air is further passed through the hot side management pad and radiator attached to the hot side of the thermoelectric engine to liberate the heat therein. The water filter unit collects and purifies the condensed water from the second tank and pass the filtered water to a third tank for drinking purpose.

The system further uses a humidity sensor to optimize waste water usage by using a control algorithm, wherein the control algorithm uses the inlet and outlet RH (Rhesus factor) values from the humid sensor to determine whether to turn ON or turn OFF the waste water pump to optimize waste water usage therein.

Further, a method of extracting water from air using a thermoelectric technology with a combined evaporative cooling is disclosed. In an embodiment, the method includes the steps of collecting the non-potable water or waste water in a first tank. After collecting, the collected waste water is allowed to flow through a pre-humidifier cooling pad. The air is extracted using a fan from outside atmosphere through a louver. The extracted air is passed through the pre-humidifier cooling pad. The pre-humidifier cooling pad creates more humid air and is allowed to pass towards a multi-flow condenser or evaporator with a closed loop water circulation which is connected to a cold side of a thermoelectric engine. The multi-flow condenser having the closed loop water circulation is exposed to the humid air to condensate the water content therein. After condensation, the condensed water is collected and stored in a second tank. The drier air/air with less water content is further passed through a hot side management and radiator connected at the hot side of the thermoelectric engine to liberate the heat therein. Finally, the stored condensed water pumped from the second tank through a water filter unit, wherein the water filter unit purifies the condensed collected water and stores in a third tank for the drinking purpose.

The present disclosure provides a portable light-weight system, which is highly reliable and uses Peltier based cooling to extract water from air by condensing therein. The system extracts high quantity of water by creating more humid air inside the enclosed surface using a pre-humidifier cooling pad. The system consumes less time and energy to extract the water in both hot and dry climates.

Both the foregoing summary and the following detailed description provide examples and are explanatory only. Accordingly, the foregoing summary and the following detailed description should not be considered to be restrictive. Further, features or variations may be provided in addition to those set forth herein. For example, embodiments may be directed to various feature combinations and sub-combinations described in the detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate various embodiments of the present disclosure. The drawings contain representations of various trademarks and copyrights owned by the Applicants. In addition, the drawings may contain other marks owned by third parties and are being used for illustrative purposes only. All rights to various trademarks and copyrights represented herein, except those belonging to their respective owners, are vested in and the property of the applicants. The applicants retain and reserve all rights in their trademarks and copyrights included herein, and grant permission to reproduce the material only in connection with reproduction of the granted patent and for no other purpose.

Furthermore, the drawings may contain text or captions that may explain certain embodiments of the present disclosure. This text is included for illustrative, non-limiting, explanatory purposes of certain embodiments detailed in the present disclosure.

FIG. 1 is a block diagram of a system to handle hybrid air to water compressor based with pre-humidifier (PH) and hot side management (HSM) from generated from non-portable/ Reverse Osmosis (RO) waste water Circuit, in accordance with an embodiment of the present disclosure.

FIG. 2 is a block diagram of a system to handle hybrid air to water compressor based with PH and HSM water generated from air to water circuit, in accordance with another embodiment of the present disclosure.

FIG. 3 shows a block diagram of a system to extract water from air using a thermoelectric technology with a combined evaporative cooling, according to one embodiment of the disclosure.

FIG. 4 shows a block diagram of a system to extract water from air using a thermoelectric technology with a combined evaporative cooling, according to one embodiment of the disclosure.

FIG. 5 is a graph showing a psychometric chart for air to water process, according to an embodiment of the disclosure.

FIG. 6 is a flowchart of a method for extracting water from air using controlled vapor compression cycle through an evaporative technology, according to an embodiment of the disclosure.

FIG. 7 is a flowchart of a method for extracting the water from air using a thermoelectric technology with a combined evaporative cooling, according to one embodiment of the disclosure.

DETAIL DESCRIPTIONS OF THE INVENTION

As a preliminary matter, it will readily be understood by one having ordinary skill in the relevant art that the present disclosure has broad utility and application. As should be understood, any embodiment may incorporate only one or a plurality of the above-disclosed aspects of the disclosure and may further incorporate only one or a plurality of the above-disclosed features. Furthermore, any embodiment discussed and identified as being “preferred” is considered to be part of a best mode contemplated for carrying out the embodiments of the present disclosure. Other embodiments also may be discussed for additional illustrative purposes in providing a full and enabling disclosure. Moreover, many embodiments, such as adaptations, variations, modifications, and equivalent arrangements, will be implicitly disclosed by the embodiments described herein and fall within the scope of the present disclosure.

Accordingly, while embodiments are described herein in detail in relation to one or more embodiments, it is to be understood that this disclosure is illustrative and exemplary of the present disclosure, and are made merely for the purposes of providing a full and enabling disclosure. The detailed disclosure herein of one or more embodiments is not intended, nor is to be construed, to limit the scope of patent protection afforded in any claim of a patent issuing here from, which scope is to be defined by the claims and the equivalents thereof. It is not intended that the scope of patent protection be defined by reading into any claim a limitation found herein that does not explicitly appear in the claim itself.

Thus, for example, any sequence(s) and/or temporal order of steps of various processes or methods that are described herein are illustrative and not restrictive. Accordingly, it should be understood that, although steps of various processes or methods may be shown and described as being in a sequence or temporal order, the steps of any such processes or methods are not limited to being carried out in any particular sequence or order, absent an indication otherwise. Indeed, the steps in such processes or methods generally may be carried out in various different sequences and orders while still falling within the scope of the present disclosure. Accordingly, it is intended that the scope of patent protection is to be defined by the issued claim(s) rather than the description set forth herein.

Additionally, it is important to note that each term used herein refers to that which an ordinary artisan would understand such term to mean based on the contextual use of such term herein. To the extent that the meaning of a term used herein—as understood by the ordinary artisan based on the contextual use of such term—differs in any way from any particular dictionary definition of such term, it is intended that the meaning of the term as understood by the ordinary artisan should prevail.

Furthermore, it is important to note that, as used herein, “a” and “an” each generally denotes “at least one,” but does not exclude a plurality unless the contextual use dictates otherwise. When used herein to join a list of items, “or” denotes “at least one of the items,” but does not exclude a plurality of items of the list. Finally, when used herein to join a list of items, “and” denotes “all of the items of the list.”

The following detailed description refers to the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the following description to refer to the same or similar elements. While many embodiments of the disclosure may be described, modifications, adaptations, and other implementations are possible. For example, substitutions, additions, or modifications may be made to the elements illustrated in the drawings, and the methods described herein may be modified by substituting, reordering, or adding stages to the disclosed methods. Accordingly, the following detailed description does not limit the disclosure. Instead, the proper scope of the disclosure is defined by the appended claims. The present disclosure contains headers. It should be understood that these headers are used as references and are not to be construed as limiting upon the subjected matter disclosed under the header.

Referring now to figures, FIG. 1 is a block diagram of a system (100) to handle hybrid air to water compressor based with pre-humidifier (PH) and hot side management (HSM) water generated from non-portable/Reverse Osmosis (RO) waste water Circuit, in accordance with an embodiment of the present disclosure. Here the system circuit can mainly be divided into four parts, i.e. cooling circuit, heat management circuit, pre-humidification circuit and non-portable/RO waste water circuit.

In an embodiment, the system (100) comprises a compressor to compress the gases to a high pressure and temperature. A condenser (104) receives and converts the gases into a liquid at high pressure and temperature. A first water tank (101) having one or more pumps (101a and 101c) is filled with non-potable/Reverse Osmosis (RO) waste water. Here, the RO waste water is collected in the first tank (101) through a third tank (111) followed by an RO unit (110). The pump (101a) inside the first water tank (101) pumps the non-potable/RO water to a sprinkler (103). The sprinkler (103) allows the non-potable/RO water to flow on top of the condenser (104). An evaporative cooling pad (105a) is fed and pumped (via the pump 101c) with non-potable/RO waste water from the first water tank (101). The evaporative cooling pad (105a) lowers/cools the water (removes the heat gained from the condenser) and also creates more humid air before passing through the condenser coil of the condenser (104). The water flow controls and manages the temperature inside the condenser (104) below 37.8 degree Celsius. Here, the condenser (104) is cooled by air as well as by water. An expansion valve expands and decreases the high-pressure liquid to a low-pressure liquid at a lower temperature. An evaporative coil (107) receives and converts the low-pressure liquid into a vapor at a lower temperature and fed back to the compressor and thereby constituting the controlled vapor compression cycle. A pre-humidifier pad (105) is fed and pumped (via a pump 101b) with non-potable/RO waste water from the third water tank (111). The evaporative cooling pad (105a) lowers/cools the water and creates more humid air before passing through the evaporative coil (107). The evaporative coil (107) condenses the water vapor in the humidified air into the water and is collected in a second tank (108), wherein the water in the second tank (108) is further filtered and used for drinking purpose. The hot dry air in the condenser (104) is dissipated through the fan (106), during the vaporization cycle. The mineral deposited waste RO water may be further collected and sold to chemical laboratories for further use.

FIG. 2 is a block diagram of a system (200) to handle hybrid air to water compressor based with PH and HSM water from generated air to water circuit, in accordance with another embodiment of the present disclosure. The system (200) includes a condenser (204) (similar to the condenser 104), a first water tank (201) (similar to the first water tank 101) having one or more pumps (201a) and (201c) (similar to the pumps 101a and 101c), a third tank (211) (similar to the third tank 111), a sprinkler (203) (similar to the sprinkler (103)), an evaporative cooling pad (205a) (similar to the evaporative cooling pad 105a), an evaporative coil (207) (similar to the evaporative coil 107), a pre-humidifier pad (205) (similar to the pre-humidifier pad 105), a pump (201b) (similar to the pump 101b), a second tank (208) (similar to the second tank 108), and a fan (206) (similar to the fan (106)). The system (200) mainly lacks the RO unit (110) of the system (100).

FIG. 3 shows a block diagram of a system (300) to extract water from air using a thermoelectric technology with a combined evaporative cooling, according to one embodiment of the disclosure. The system (300) may be configured to handle standalone air to water thermoelectric based with PH and HSM Water from non-Portable/RO Waste Water Circuit. Here the system circuit may be divided into four parts, i.e. cooling circuit, heat management circuit, pre-humidification circuit and non-portable/RO waste water circuit.

The system (300) includes an enclosed surface (301a) comprising an evaporating cooling pad (303), an air filter, five tanks (301), (302), (308), (311) and (312), a fan (304), a louver (305), a cooling pad (305a), a thermoelectric engine (307) having a cold side (307a) and a hot side (307b), a multi-flow condenser or evaporator having closed loop water circulation, a radiator (306) and a water filter unit (310). In an embodiment, the tanks (301) & (302) are filled with non-potable water or waste water and is fitted with a float switch and a solenoid operated water valve. The solenoid operated water valve automatically refills the first tank with the non-potable water, when there is a less waste water therein. The non-potable water in the tank (302) is passed through the pre-humidifier evaporative cooling pad (303). The fan (304) sucks or draws the air through the louvre (305) from the outside atmosphere and is passed through the pre-humidifier evaporative cooling pad (303). The enclosed surface (301a) uses the air filter to filter the sucked or extracted air from the outside atmosphere. The pre-humidifier evaporative cooling pad (303) creates more humid air (307c) inside the enclosed surface (301a) therein. Further, the thermoelectric engine (307) is energized and thereby creating the hot side (307b) and the cold side (307a). The multi-flow condenser or multi-channel micro flow condenser with the closed loop water circulation is connected to the cold side (307a) of the thermoelectric engine (307). The humid air inside the enclosed surface flow towards the multi-flow condenser having closed loop water circulation. The multi-flow condenser or evaporator having closed loop water circulation is exposed to the humid air (307c) to condensate the water content therein. The condensed water is collected and stored in a second tank (308). In an embodiment, the air inside the enclosed surface (301a) with reduced water content/drier air is further passed through the radiator (306), which is attached to the hot side of the thermoelectric engine (307) to liberate the heat therein. Further, the water filter unit (310) collects and purifies the condensed water from the second tank (308) and pass the filtered water to the third tank (311) for drinking purpose.

FIG. 4 shows a block diagram of a system (400) to extract water from air using a thermoelectric technology with a combined evaporative cooling, according to one embodiment of the disclosure. The system (400) may be configured to handle Standalone

Air To Water Thermoelectric Based with PH and HSM Water from Generated air to water Circuit. The system (400) includes an enclosed surface (401a) (similar to the enclosed surface 301a), an evaporating cooling pad (403) (similar to the evaporating cooling pad 303), an air filter, five tanks (401), (402), (408), (411) and (412) (similar to the five tanks 301, 302, 308, 311, 312), a fan (404) (similar to the fan 304), a louver (405) (similar to the louver 305), a cooling pad (405a) (similar to the cooling pad 305a), a thermoelectric engine (407) (similar to the thermoelectric engine 307) having a cold side (407a) and a hot side (407b), a radiator (406) (similar to the radiator 306), a water filter unit (410) (similar to the water filter unit 310). The system (400) mainly lacks the water filter unit (310) of the system (300).

The present disclosure provides a portable light-weight system, which is highly reliable and uses Peltier based cooling to extract water from air by condensing therein. The system extracts a high quantity of water by creating more humid air inside the enclosed surface using an evaporative cooling pad. The system consumes less time and energy to extract the water in both, hot and dry climates.

FIG. 5 is a graph showing a psychometric chart 500 for air to water process, according to an embodiment of the disclosure. The X-axis of the chart 500 represents the dry bulb temperature of Air (in Degrees Centigrade units). The Y-axis represents the moisture content of the air (in g/kg). A point 502 on the chart 500 at Relative Humidity (RH) 10 represents the inlet condition and a point 504 at approximately RH 90 represents the humidified and pre-cooled air, which is the result of the evaporative cooling of air, as it passes over the evaporative pad wetted with waste water. The curve though the points 504, 506 and 508 (the points 506 and 508 lie on the 100 percent saturation line) show the condition of air as it passes over cooling coil and de-humidifies.

FIG. 6 is a flowchart of a method 600 for extracting water from air using controlled vapor compression cycle through an evaporative technology, according to an embodiment of the disclosure. The method 600 includes steps 601-608. The method 600 includes the steps of compressing the gases in a condenser to high pressure and temperature, at step (601). After compressing, the gases are received and converted into a liquid at high pressure and temperature through a condenser therein, at step (602). The stored non-potable/Reverse Osmosis (RO) is pumped from a first water tank to a sprinkler, at step (603). The non-potable/RO water is allowed to flow on top of the condenser from the condenser, wherein the water flow controls and manages the temperature inside the condenser below the 37.8 degree Celsius, at step (604). The high-pressure liquid is decreased to a low-pressure liquid at a lower temperature using an expansion valve, at step (605). The low-pressure liquid at lower temperature is received and converted into a vapor form using an evaporative coil. The vapor is fed back to the compressor and thereby constituting the controlled vapor compression cycle, at step (606). The non-potable/RO water is pumped from the third water tank to a pre-Humidifier cooling pad, wherein the pre-humidifier cooling pad extracts the ambient air from the outside atmosphere and creates more humid air before passing through the evaporative coil, at step (607). The water is extracted from the humidified air using the evaporative coil and is collected in a second tank. The water in the second tank is further filtered and used for drinking purpose, at step (608). Finally, the hot dry air is dissipated from the condenser using a fan, during the vaporization cycle.

According to some embodiments, a method to extract water from air using controlled vapor compression cycle through an evaporative technology is disclosed. The method comprising the steps of compressing the gases in a condenser to high pressure and temperature (601). Further, the method includes receiving and converting the gases into a liquid at high pressure and temperature through a condenser therein (602). Further, the method includes storing and pumping the non-potable/Reverse Osmosis (RO) water from a first water tank to a sprinkler (603). Further, the method includes allowing the non-potable/RO water to flow on top of the condenser from the first water tank, wherein the water flow controls and manages the temperature inside the condenser below the 37.8 degree Celsius (604). Further, the method includes decreasing the high-pressure liquid to a low-pressure liquid at a lower temperature using an expansion valve (605). Further, the method includes receiving and converting the low-pressure liquid at lower temperature into a vapor form using an evaporative coil, wherein the vapor is fed back to the compressor and thereby constituting the controlled vapor compression cycle (606). Further, the method includes pumping the non-potable/RO water from the third water tank to a pre-humidifier cooling pad, wherein the pre-humidifier cooling pad lowers/cools the water (removes the heat gained from the condenser) and also creates more humid air before passing through the evaporative coil (607). Further, the method includes condensing the water vapor in the humidified air into the water using the evaporative coil and is collected in a second tank, wherein the water in the second tank is further filtered and used for drinking purpose (608). Further, the method includes dissipating the hot dry air from the condenser using a fan, during the vaporization cycle.

FIG. 7 is a flowchart of a method 700 for extracting the water from air using a thermoelectric technology with a combined evaporative cooling, according to one embodiment of the disclosure. The method 700 includes steps 701-706. The method 700 includes the steps of collecting the non-potable water or waste water in a first tank, at step (701). After collecting, the waste water can flow through an evaporative cooling pad, at step (702). The air is extracted using a fan from outside atmosphere through a louvre, at step (703). The extracted air is passed through the evaporative cooling pad, at step (704). The evaporative cooling pad creates more humid air and can pass towards a multi-flow condenser with a closed loop water circulation, which is connected to a cold side of a thermoelectric engine. The multi-flow condenser having the closed loop water circulation is exposed to the humid air to condensate the water content therein. After condensation, the condensed water is collected and stored in a second tank, at step (705). The drier air/air with less water content is further passed through a radiator connected at the hot side of the thermoelectric engine to liberate the heat therein. Finally, at step (706), the stored condensed water pumped from the second tank which can be used for drinking purpose.

According to some embodiments, a method to extract water from air using a thermoelectric technology with a combined evaporative cooling is disclosed. The method includes collecting the non-potable water or waste water in a first tank (701). Further, the method includes allowing the collected waste water to flow through a pre-humidifier cooling pad (702). Further, the method includes sucking or extracting the air using a fan from outside atmosphere through a louvre (703). Further, the method includes passing the extracted air through the pre-humidifier cooling pad, wherein the pre-humidifier cooling pad creates more humid air and is allowed to pass towards a multi-flow evaporator or condenser with a closed loop water circulation which is connected to a cold side of a thermoelectric engine, wherein the multi-flow condenser having the closed loop water circulation is exposed to the humid air to condensate the water content therein (704). Further, the method includes collecting and storing the condensed water in a second tank, wherein the drier air/air with less water content is further passed through a radiator connected at the hot side of the thermoelectric engine to liberate the heat therein (705). Further, the method includes pumping the stored condensed water from the second tank (706).

Although the disclosure has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the disclosure.

Claims

1. A system of extracting water from atmospheric air with dehumidification and cooling using thermoelectric based/vapor compression cycle combined with evaporative cooling technology, the system comprises:

i. a compressor to compress the gases to high pressure and temperature therein;

ii. a condenser to receive and convert the gases into a liquid at high pressure and temperature;

iii. a first water tank with at least one pump, wherein the first water tank is filled with non-potable/Reverse Osmosis (RO) waste water, wherein the pump inside the first water tank pumps the non-potable/RO water to a sprinkler, wherein the sprinkler allows the non-potable/RO water to flow on top of the condenser, wherein the water flow controls and manages the temperature inside the condenser below 37.8 degree Celsius;

iv. an expansion valve to expand and decrease the high-pressure liquid to a low-pressure liquid at lower temperature;

v. an evaporative coil to receive and convert the low-pressure liquid into a vapor at lower temperature and fed back to the compressor and thereby constituting the controlled vapor compression cycle;

vi. a hot side management cooling pad, wherein the hot side management cooling pad is fed and pumped with non-potable/RO water from the first water tank, wherein the hot side management cooling pad lowers/cools the water (removes the heat gained from the condenser and creates more humid air before passing through the condenser,

vii. a fan to dissipate the hot dry air from the condenser, during the vaporization cycle.

2. The system of claim 1, wherein water is simultaneously pumped and circulated through the pre-humidifier cooling pad from the third water tank, wherein the water circulation through the pre-humidifier cooling pad increases the humidity thereof and keeps the water cool at all-time.

3. The system of claim 1, wherein the system generates pure drinking water from waste water using thermoelectric engine wherein to extract water from air using controlled thermoelectric based through an evaporative technology, the system further comprising:

a. an enclosed surface comprising: i. at-least three tanks wherein the first tank is filled with non-potable water or waste water; ii. a pre-humidifier cooling pad, wherein the pre-humidifier cooling pad is fed and pumped with the waste water from the first tank; iii. a fan, wherein the fan sucks or draws the air through a louvre from the outside atmosphere and pass through the pre-humidifier cooling pad, wherein the pre-humidifier cooling pad creates more humid air inside the enclosed surface therein; vi. a thermoelectric engine, wherein the thermoelectric engine is energized and thereby creates a hot side and a cold side; v. a multi-flow condenser or multi-channel micro flow condenser with a closed loop water circulation connected to the cold side of the thermoelectric engine, wherein the multi-flow condenser having closed loop water circulation is exposed to the humid air to condensate the water content therein, wherein the condensed water is collected and stored in a second tank, wherein the air with reduced water content/drier air is further passed through a hot side management and radiator attached to the hot side of the thermoelectric engine to liberate the heat therein; and vi. a water filter unit, wherein the water filter unit collects and purifies the condensed water from the second tank and passes the filtered water to a third tank for drinking purpose.

4. The system of claim 2, wherein the system further comprises a fourth tank which is filled with the water and allows to flow towards the cold side of the thermoelectric engine continuously, wherein the outlet of the multi-flow condenser is first passed through third tank to make the drinking water more cool at all times, before connecting to fourth tank.

5. The system of claim 2, wherein the system further comprises an air filter to filter the sucked or extracted air from the atmosphere.

6. The system of claim 2, wherein the system is energized through various sources such as AC power and DC power, wherein the DC power is extracted through various sources but not limited to solar, battery or waste heat, etc.

7. The system of claim 2, wherein the system generates more quantity of pure water by using less quantity of waste water by means of creating additional humidity thereby speeding up the condensation process.

8. The system of claim 2, wherein the system further uses a humidity sensor to optimize waste water usage by using a control algorithm, wherein the control algorithm uses the inlet and outlet relative humidity (RH) values from the humid sensor to determine whether to turn ON or turn OFF the waste water pump to optimize waste water usage therein.