The modern air conditioning system cools an indoor space by using the refrigeration cycle. This refrigeration cycle works by controlling the level of energy in the system’s refrigerant: Some parts of ...

In three previous articles, we have presented an overview of CO2 (R-744) as a refrigerant, its applications in industrial refrigeration, and a case study of a CO2 cascade system in a European ...

Fujitsu General has been granted a patent for a hermetic compressor design featuring a compression unit with upper and lower cylinders connected to suction tubes, and an accumulator vessel with ...

Tests on two in–service compressors show corrected performance maps can predict a compressor's performance within 5% relative error under most situations. The ...