Chiller Evaporator Shell and Tube Heat Exchanger
Air-cooled screw chiller because of its key components - the
compressor used screw-type air-cooled
screw chiller, the unit from the evaporator out of the state of the
gas refrigerant; compressed by the
compressor after compression, into a high temperature and high
Compressed gas refrigerant, in the condenser, isostatic cooling
condensation, after condensation into
liquid refrigerant, and then through the throttle valve to low
pressure, into a gas-liquid mixture. Which low-
temperature low-pressure liquid refrigerant, in the evaporator to
absorb the heat of cold matter, re-
become a gaseous refrigerant.
The gaseous refrigerant is reintroduced into the compressor via
piping to start a new cycle. This is the
four cycles of the refrigeration cycle. It is also the main working
principle of the screw chiller.
Chillers because of different forms of condensation so divided into
air-cooled and water-cooled type of
The air-cooled chiller directly uses the air condenser on the unit
to drain the heat into the air. Water-
cooled machines need to be circulated through external cooling
water. Heat the heat through the cooling
tower or the cooling pool into the air.
The screw unit is a medium-sized refrigeration unit. Water
condensers are usually used. The advantage is
that the cooling capacity is relatively high relative to air
cooling. And by the environmental shadow is
small. Performance is more stable. And in the absence of water, or
water is not convenient to the water will
be used in areas of air-cooled machines.