Wednesday, September 7, 2011

OPERATION OF A WATER CHILLER

The heated cooling agent steam is sucked out of the evaporator by the compressor and is compressed to the condensation pressure.The overheated gas flows from the compressor into the aircooled condenser.In the condenser the cooling agent is cooled down by the air to such an extent,that it changes from gas to liquid. It flows on into the collector through the filter dryer and the inspection glass to the thermally controlled expansion valve.From here it flows as expanded cooling agent liquid to the non circulating water cooler.Here the cooling agent evaporates.The amount of heat required for this evaporation is taken from the circulating water and so the cycle can start a new. In the suction pipe between evaporator and compressor there is a fluid absorber.At standstill of the plant,drops,which are not evaporated in the evaporator,seperate in the fluid absorber. When starting the compressor,this fluid is sucked through the suction pipe.Thus a suction of too much cooling agent at starting the compressor,which could cause trouble,is prevented.

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