| 摘要 |
High-efficiency operation can be rapidly achieved in a refrigeration apparatus that performs a refrigeration cycle operation in which the high-pressure side attains a pressure that exceeds the critical pressure of the refrigerant. The refrigeration apparatus is a refrigeration apparatus for performing a refrigeration cycle operation in which a high-pressure side attains a pressure that exceeds the critical pressure of a refrigerant, the refrigeration apparatus having a refrigerant circuit that includes a compressor, a cooler, an expansion mechanism, and a heater. A constituent component of the refrigeration apparatus is controlled so that a quasi-subcooling degree, which is the temperature difference between a quasi-condensation temperature and a cooler outlet refrigerant temperature, is within a predetermined temperature range, the quasi-condensation temperature being the refrigerant temperature at which the isobaric specific heat capacity of the refrigerant at the refrigerant pressure on the high-pressure side of the refrigeration cycle is at a maximum. |
