Patent ID: 8132419
Filing Date: 2012-03-13
Classification: F25B

Abstract:
1. A refrigeration system that comprises a refrigerant circuit configured by connecting a plurality of circuit component parts including a compressor, a pressure reduction device and a plurality of heat exchangers and operates in a refrigeration cycle by circulating refrigerant through the refrigerant circuit, the refrigeration system further comprising: refrigerant state detection section for detecting the refrigerant temperatures and entropies at the entrance and exit of each of the compressor, the pressure reduction device and the heat exchangers; and variation calculation section that uses the refrigerant temperatures and entropies detected by the refrigerant state detection section to separately calculate the magnitude of energy variation of refrigerant produced in each of the circuit component parts; and sets an area of a region indicating an amount of work of a reverse Carnot cycle in a temperature-entropy diagram based on a temperature of fluid exchanging heat with the refrigerant in each of the heat exchangers serving as a radiator, a temperature of fluid exchanging heat with the refrigerant in each of the heat exchangers serving as an evaporator, and refrigerant temperatures and entropies at an entrance and an exit of each of the heat exchangers serving as an evaporator, and the variation calculation section calculates an area of a region indicating energy variation of the refrigerant generated in the refrigeration cycle in the temperature-entropy diagram based on the area of region indicating the amount of work of the reverse Carnot cycle as a reference, according to energy variation of the refrigerant produced in each of the circuit component parts.