Air cooling system

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.

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.