| 摘要 |
PROBLEM TO BE SOLVED: To properly achieve effect of split-cycle by obtaining an appropriate medium pressure of a refrigerant circuit of a refrigerating apparatus, thus performance of a refrigerating apparatus is improved. SOLUTION: In this refrigerating apparatus R including a so-called split cycle device, a control device C operates a first controlled variable obtained from a temperature DT of a refrigerant discharged from a compressor 11, a second controlled variable obtained from an over compression determination value MPO obtained from a pressure MP of a medium pressure region and a low pressure side pressure LP of the refrigerant circuit, and a high pressure-side pressure HP, and a third controlled variable obtained from the difference between a temperature GCT of the refrigerant passing through the gas cooler and a temperature LT of a second refrigerant flow through an intermediate heat exchanger, and a manipulated variable of a valve opening of an auxiliary expansion valve 83 is determined by totalizing these controlled variables. COPYRIGHT: (C)2011,JPO&INPIT |
