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The principle of compression refrigeration consists of “compression”, “condensation”, “throttling” and
“vaporization”. The compression is undertaken by compressor, the condensation is completed by
condenser, the throttling valve is executed by capillary and the vaporization is implemented by evaporator.
When the coolant is circulating in the closed refrigeration system, the compressor sucks coolant, which
has absorbs heat in evaporator, the coolant becomes a high pressure and high temperature gas. In
condenser, it dissipates heat in air, while the coolant is re-liquefied and throttled in capillary and then
enters into evaporator with low pressure. The liquefied coolant quickly boils and vaporizes into gas when
the pressure suddenly drops. Meanwhile, it absorbs heat inside the refrigerator. And the compressor sucks
the low pressure and low temperature gaseous coolant,……….It is circulating in this way up to realization
of intended refrigeration.
Principle of Refrigeration System and Electric Circuit Diagram
Circuit Diagram
HA-900/1200Z
HA-1500Z
