| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigeration system that can effectively solve an efficiency reduction due to a reduced low pressure side pressure of a refrigerant circuit. SOLUTION: The refrigeration system 1, in which the refrigerant circuit comprises a controllable displacement compressor 37, a condenser 38, an expansion valve 44 and an evaporator 43, according to a low pressure side pressure of the refrigerant circuit, reduces the displacement of the compressor if the low pressure side pressure lowers to a lower limit value, which is set along with an upper limit value as limits of a given set value, or increases the displacement of the compressor if the upper limit value is reached, and also changes the set value according to the deviation of an actual temperature in a chamber cooled by the evaporator 43 from a set temperature of the chamber. COPYRIGHT: (C)2005,JPO&NCIPI
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