Experimental assessment of dedicated and integrated mechanical subcooling systems vs parallel compression in transcritical CO2 refrigeration plants

Mechanical subcooling systems, both dedicated and integrated, have attracted lot of attention in the recent years due to their great potential improve transcritical CO2 refrigeration systems. Numerous studies theoretically determined COP increments that these systems can offer compared classic experimental works evaluated optimum working conditions for each individual system. However, they not been contrasted experimentally. In this work, integrated mechanical are experimentally parallel compression one, which is considered as base The energy performance three heat rejection levels: 25.0 °C, 30.4 °C 35.1 °C. tests show 4.1% at 7.2% 9.5% thanks use 7.8%, 13.7% 17.5% respectively when using dedicated. It concluded system best system, however also performed better than reference