The Basics of Refrigeration
Refrigeration is cooling the air and removing the humidity in it. The refrigerator in your house, the air conditioner in your office, home or car; all function in the same way. The functioning principle is evaporation and condensation.
To convert the principles of evaporation and condensation into refrigeration system you require a series of components that are connected by tubing and hoses. The six basic components required for a refrigeration system are the compressor, condenser, receiver drier, thermostatic expansion valve, the evaporator and the refrigerant. The refrigerant is a liquid that is efficient of vaporizing at a low temperature.
The system functions as mentioned below.
– The energy unit of the refrigeration system is the compressor. The compressor pumps refrigerant vapor in high pressure and heat to the condenser.
– The condenser converts the high-pressure refrigerant vapor to liquid by altering the heat from the refrigerant.
– Refrigerant travels to the drier. This device works as storage tank for the liquid refrigerant and also removes dampness from the refrigerant. If the moisture freezes it my cause blockage of the system.
– Continuous compression pressurizes the system forcing the liquid refrigerant under high pressure to flow from the receiver drier to the thermostatic expansion valve. Pressure from the liquid refrigerant is removed by the valve helping it to expand and convert to refrigerant vapor in the evaporator.
– Like the condenser, the evaporator is a device that contain tubes and fins. The pressuried refrigerant vaporizes in the evaporator and absorbs heat and the air cools. This completes the process of fundamental refrigeration, thereby inducing cooling in your refrigerator or in your area or car by an air conditioner.
– The overall process of another refrigeration cycle starts when the heat laden, low-pressure refrigerant vapor is drawn into the compressor.
Thus, by continually circulating, evaporating and condensing a fixed supply of refrigerant in a closed system complete mechanical refrigeration.
The cause to be ascertained in case of failure. Analyzing completely the system and understanding the intended function of each section can do this. This is extremely important before arriving at any conclusion.
The refrigerants used for refrigeration were synthetic refrigerants based mostly on chlorofluocarbon (CFC) chemical. This was considered safe for refrigerators to be used by consumers at home or commercial establishments. During the late 1920s, hydro chlorofluorocarbon (HCFC) and hydro fluorocarbon (HFC) refrigerants were produced and was considered less harmful than the commonly used methyl formate, ammonia, methyl chloride and sulphur dioxide.
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