US20170097167A1

US20170097167A1 - Air cooling system

Info

Publication number: US20170097167A1
Application number: US14/982,436
Authority: US
Inventors: Mithun SRINIVAS PRABHAKAR
Original assignee: HCL Technologies Ltd
Current assignee: HCL Technologies Ltd
Priority date: 2015-10-06
Filing date: 2015-12-29
Publication date: 2017-04-06
Also published as: IN2015DE03212A

Abstract

Disclosed is an air cooling system for cooling a room at lower operational cost. In one aspect, the air cooling system comprises a primary water cooling system for cooling water based on a vapor compression refrigeration methodology and a secondary cooling system for cooling a room utilizing the cold water. The primary cooling system further comprises a liquid line coil for cooling the water based on heat transfer. Further, during operation the liquid line is configured to receive a liquid refrigerant. The secondary cooling system further comprises a container containing water, a pump and an evaporator for cooling ambient air in a room. Further, during operation the water in the container is cooled due to the liquid refrigerant flowing liquid line. Upon cooling, the cold water is pumped by the pump into the evaporator for cooling a room.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS AND PRIORITY

The present application claims benefit from Indian complete patent application No. 3212/DEL/2015, filed on Oct. 6, 2015, the entirety of which is hereby incorporated by reference.

TECHNICAL FIELD

The present subject matter described herein, generally relates to a cooling system, and more particularly to an air cooling system for cooling a room.

BACKGROUND

Generally, air conditioning (frequently referred to as ‘A/C’ or ‘AC’) is the process of altering the properties of air, in particular temperature and humidity to conditions more comfortable to humans. Further, the aim of AC is to distribute the conditioned air in an occupied space such as a building or a vehicle to improve thermal comfort and indoor air quality. In common use, an air conditioner is a device that lowers the air temperature.
Typically, air conditioners use a lot of electricity. This creates both financial disadvantages due to high utility bills, and more generalized enviromnental disadvantages caused by power production. One of the main reasons a lower/middle class family living in hot and humid areas limit AC use at home is because of excessive operating costs. In other words paying higher electric bills even though the market value of the air-conditioner is quite affordable. Furthermore, because a large percentage of electricity is created by coal-burning power plants, air conditioning contributes indirectly to the release of greenhouse gases and other pollutants. Thus, energy saving is a big need for the current society.

SUMMARY

Before the present systems and methods, are described, it is to be understood that this application is not limited to the particular systems, and methodologies described, as there can be multiple possible embodiments which are not expressly illustrated in the present disclosures. It is also to be understood that the terminology used in the description is for the purpose of describing the particular implementations or versions or embodiments only, and is not intended to limit the scope of the present application. This summary is provided to introduce aspects related to an air cooling system for cooling a room.
In one implementation, the air cooling system includes a primary water cooling system for cooling water based on a vapor compression refrigeration methodology and a secondary cooling system for cooling a room utilizing the cold water. The primary cooling system further includes a liquid line for cooling the water based on heat transfer. Further, during operation, the liquid line is configured to receive a liquid refrigerant for cooling the water. The secondary cooling system further includes a container containing water, a pump connected to the container and an evaporator for cooling ambient air in a room, Furthermore, during operation, the water in the container is cooled due to the liquid refrigerant flowing in the liquid line. Upon cooling, the cold water is pumped by the pump into the evaporator for cooling a room.

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing detailed description of embodiments is better understood when read in conjunction with the appended drawings. For the purpose of illustrating of the present subject matter, an example of construction of the present subject matter is provided as figures; however, the invention is not limited to the specific system disclosed in the document and the figures.

The present subject matter is described detail with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawings to refer various features of the present subject matter.

FIG. 1 illustrates an air cooling system at lower operational cost for cooling a room, in accordance with an embodiment of the present subject matter.

DETAILED DESCRIPTION

Some embodiments of an air cooling system for cooling a room, illustrating all its features, will now be discussed in detail. The words “comprising,” “having,” “containing,” and “including,” and other forms thereof, are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items, or meant to be limited to only the listed item or items. It must also be noted that as used herein and in the appended claims, the singular forms “a,” “an,” and “the” include plural references unless the context clearly dictates otherwise. Although any systems and methods similar or equivalent to those described herein of an air cooling system for cooling a room can be used in the practice or testing of embodiments of the present disclosure, the exemplary, systems and methods are now described. The disclosed embodiments of an air cooling system for cooling a room are merely examples of the disclosure, which may be embodied in various forms.
Various modifications to the embodiment of an air cooling system will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. However, one of ordinary skill in the art will readily recognize that the present disclosure of an air cooling system is not intended to be limited to the embodiments described, but is to be accorded the widest scope consistent with the principles and features of an air cooling system described herein.
In an implementation, of an air cooling system for cooling a room, is described. In the implementation, the air cooling system may cool the room at a low operation cost. In the implementation, the air cooling system comprises a primary water cooling system and a secondary cooling system. In one example, the primary water cooling system may be based on a vapor compression refrigeration methodology. Further, the primary water cooling system includes a liquid line partially submerged or fully submerged in water for cooling the water based on heat transfer. Furthermore, during operation the liquid line may be configured to receive a liquid refrigerant for cooling the water.
In the implementation, the secondary cooling system includes a container containing cold water, a pump connected to the container, and an evaporator for cooling ambient air in the room. Further, during operation, the water in the container is cooled due to the liquid refrigerant flowing in the liquid line. Upon cooling, the cold water is pumped by the pump into the evaporator for cooling a room. In one embodiment, a fan is placed next to the evaporator in order to blow the cold air across the room.
Referring now to FIG. 1, an air cooling system 100 for cooling a room in accordance with an embodiment of the present subject matter is described. In an embodiment of the air cooling system 100, the air cooling system 100 includes a primary water cooling system 140 for cooling water and a secondary air cooling system 142 for effective cooling of a room minimal consumption of electricity. In one example, the air cooling system 100 consumes 1.2 amperes of total power for room cooling the capacity being 1 ton.
In the embodiment of the air cooling system 100, the primary cooling system 140 may be utilized to cool the water or a water glycol mixture, which may be further utilized to cool the room. In one example, the primary water cooling system 140 may cool the water based on a vapor compression refrigeration methodology. In one other example, the primary water cooling system 140 may cool the water glycol mixture based on a vapor compression refrigeration methodology In one example the primary water cooling system 140 may cool the water to at least 3-5° C. below room temperature. Vapor-compression refrigeration methodology may be understood as a methodology in which the refrigerant undergoes phase changes.
In the embodiment of the air cooling system 100, the primary cooling system 140 may comprise a compressor 102, a condenser 104 configured to receive the refrigerant from the compressor 102. In one example, a first fan 118-A may be located next to the condenser 104 for blowing air over the condenser 104 to achieve an enhanced heat transfer and rejection of latent heat. Further the primary cooling system 140 may comprise an expansion valve 106 and a liquid line 108. In one example, coil(s) of liquid line 108 is partially submerged in the water. In one other example, the may be fully submerged in the water, In one example, in order to have a larger surface area for facilitating an increased rate of heat transfer, the liquid line 108 may be manufactured utilizing copper tube. In one more example, liquid line 108 manufactured in a spiral shape for increasing the surface area, and in turn increasing the rate of heat transfer.
Furthermore, the primary cooling system 140 may comprise a primary control system configured to control the primary water cooling system 140 based on the water temperature. In one example, the primary control system may switch-off the primary cooling system 140 when the temperature of the water falls below a pre-defined limit. In this embodiment, the power consumption may be controlled based on switching off the compressor 102.
in the embodiment of the air cooling system 100, during operation of air cooler system 100, the compressor 102 may receive a refrigerant at a low-pressure and gaseous form during operation. Upon receiving, the compressor 102 may compress the refrigerant to a high-pressure and high-temperature gaseous state. Further to the compression, the condenser 104 may receive the refrigerant and the refrigerant may be converted to a liquid refrigerant due to the heat transfer. Subsequently, the expansion valve 106 receives the liquid refrigerant from the condenser 104 and upon receiving the liquid refrigerant the expansion valve 106 expands the liquid refrigerant to lower its temperature. Finally, the liquid line 108 may to receive the liquid refrigerant. Further the liquid refrigerant absorbs the heat from the water thus cooling the water to 3-5° C.
In the embodiment, the secondary air cooling system 142 for cooling a room utilizing cold water, comprises a container 110 containing water, a pump 114 connected to the container 110, and an evaporator 116 coupled to the pump 114 for cooling ambient air in a room. In one example, the pump 114 may be submerged in the container 110 containing water. In one example, the container 110 may be buried in a sand filled earthen pot for effective insulation and achieving better efficiency. In one other example, the container 110 may be an earthen pot for effective insulation and achieving better efficiency. Further the secondary air cooling system 142 may comprise, a secondary control system configured to control the secondary air cooling system 142 based on the water temperature based on room temperature. In one example, the secondary control system may switch-off the primary air cooling system 140 when the temperature of the room or the water in the container 110 falls below a pre-defined limit. In one example, the secondary control system may switch-off the secondary air cooling system 140 when the temperature of the room or the water in the container 100 falls below a pre-defined limit.
In the embodiment during operation of air cooler system 100, the water in the container 110 is cooled due to the liquid refrigerant flowing in through the liquid line 108 and heat transfer. In one example, the water may be mixed with glycol in order to avoid freezing of water. In one other example, salt water mixture may be utilized. Further to cooling, the cold water is pumped in to the evaporator 116 by the pump 114. Upon the flow of cold water in the evaporator 116 the cold water absorbs the heat from the room, thus cooling the room. In one example a second fan 118-B may be place next to the evaporator 116 and may be configured to blow air over the evaporator 116 for cooling the room. In the embodiment, based on active control of the air cooler system 100 utilizing on the primary control system, the secondary control system and the completed configuration of the air cooler system 100 effective cooling of a room at low operational cost may be achieved.
Exemplary embodiments discussed above may provide certain advantages. Though not required to practice aspects of the disclosure, these advantages may include those provided by the following features.
Sonic embodiments of the air cooler system enable cooling of a room at lower operational cost.
Sonic embodiments of the air cooler system enable in reduction in electricity consumption.
Some embodiments of the air cooler system enable in reduction in electricity consumption to 1.2 amps.
Some embodiments of the air cooler system enable reduction in the utility bills.
Exemplary embodiments discussed above may provide certain advantages. Though not required to practice aspects of the disclosure, these advantages may include an air cooling system at lower operational cost for cooling a room.
Although implementations for an air cooling system for cooling a room have been described in language specific to structural features and/or methods, it is to be understood that the appended claims are not necessarily limited to the specific features or methods described. Rather, the specific features and methods are disclosed as examples of an air cooling system for cooling a room.

Claims

We claim:

1. An air cooling system for cooling a room, the air cooling system comprising:

a primary water cooling system configured for vapor compression refrigeration for cooling water, the primary cooling system comprising:

a liquid line for cooling water based on heat transfer, wherein the liquid line is configured for water submersion, and wherein during operation the liquid line is configured to receive a liquid refrigerant; and

a secondary cooling system configured for cooling a room utilizing cold water, the secondary cooling system comprising:

a container containing water, and wherein during operation the water is cooled due to the liquid refrigerant flowing through the liquid line and heat transfer;

a pump wherein during operation the pump is configured to pump the cold water; and

an evaporator configured for cooling ambient air in a room based on heat transfer; wherein during operation the evaporator is configured to receive the cold water from the pump, and wherein the cold water absorbs heat from the room.

2. The air cooling system of claim 1, wherein the liquid line is a spiral form shape.

3. The air cooling system of claim 1, wherein the liquid line is copper.

4. The air cooling system of claim 1, wherein the pump is at least partially submerged in the container.

5. The air cooling system of claim 1, further comprising:

a compressor configured to receive a refrigerant in a low-pressure, moderate-temperature, and gaseous form and compress the refrigerant to a high-pressure and high-temperature gaseous state during operation;

a condenser configured to receive the refrigerant from the compressor during operation, and wherein the refrigerant is converted to the liquid refrigerant based on the heat transfer; and

an expansion valve configured to receive the liquid refrigerant from the condenser and control the flow of the liquid refrigerant to the liquid line.

6. The air cooling system of claim 2, further comprising:

a first fan configured to blow air over the condenser for heat transfer; and

a second fan configured to blow air over the evaporator for cooling the room.

7. The air cooling system of claim 1, further comprising:

a control system for controlling the air cooling system, the control system comprising:

a primary control system configured to control the primary water cooling system based on one of the water temperature and room temperature; and

a secondary control system configured to control the secondary cooling system based on one of the water temperature and room temperature.

8. The air cooling system of claim 1, wherein primary water cooling system is configured to cool the water to at least 5° C. below room temperature.

9. The air cooling system of claim 1, wherein the container is buried in an earthen pot filled with sand.

10. The air cooling system of claim 1, wherein the container is an earthen pot.