SERVEL
Air Cooled Absorption Cooling System Simplified Cycle of Operation

The sealed refrigeration system consists of the following basic components:

1. Generator

2. Condenser Coil

3. Evaporate Coil

4. Solution Cooled Absorber (SCA)

5. Solution Pump

The solution in the sealed refrigeration system is an environmentally friendly mixture of ammonia and water. Ammonia is the refrigerant, and water is the absorbent. When the thermostat calls for cooling, a high efficiency burner, fired by natural (or propane) gas, ignites, heating the generator (1), causing the solution in the generator to boil. During this boiling process, the ammonia is separated from the water. The ammonia vapor leaves the generator and enters the condenser coil (2) where it is condensed to a liquid. As the liquid ammonia leaves the condenser, it passes through a restriction which lowers the pressure as it enters the evaporator coil (3).

As liquid ammonia vaporizes to gas in the evaporate, heat is absorbed from the water dripping over the outer surface of the evaporator coil, thus cooling the water to 45 degrees fahrenheit. The chilled water is then pumped to the location to be cooled.

The ammonia gas from the evaporator now enters the absorber (4) where it is absorbed into water. This saturated solution is pumped by a solution pump (5) back to the generator and the cycle repeats itself.

Strong Solution

Weak Solution

Vapor Refrigerant

Liquid Refrigerant

Chilled Water

 SIMPLIFIED CYCLE OF OPERATION

Robur Corporation North American Headquarters
2300 Lynch Road
Evansville, IN 47711-2951
1-812-424-1800
Fax: 1-812-422-5117
Email: robur@robur.com
Web Site: http://www.robur.com