Experimental investigation of the heating performance of refrigerant injection heat pump with a single-cylinder inverter-driven rotary compressor

Comparative research on vapor injection heat pump with a novel flash tank

“…To compare the effects of different size flash tanks on the system heating performance, the amount of refrigerant charge is fixed at 1380 g. It is determined by debugging the CSVC system with the condenser subcooling degree of 4 K at the compressor frequency of 60 Hz, the ambient temperature of 7°Cand the indoor environment temperature of 20 °C, which is also the rated condition. The CSVC system could achieve a higher COP h compared with the FTVIC [ 18 , 39 ] at the rated condition. Table .3 shows the test condition during the experiments.…”

“…The flash tank or economizer (sub-cooler) was the necessary additional component for the typical vapor injection configuration to obtain injecting vapor [ 5 ]. To study the effects of vapor injection with different features, the improvement of heating performances is investigated comprehensively through numerical simulation [ [14] , [15] , [16] ] and experiment [ 10 , 12 , [17] , [18] , [19] ].…”

Experimental Investigation on a Vapor Injection Heat Pump System with a Single-Stage Compressor

“…Therefore, a vapor compression heat pump system has high efficiency and is considered to be competitive to decrease energy consumption and thus reduce CO 2 emission [5,6]. Continuous efforts with regard to research on more efficient systems have mainly focused on viewpoints using alterative cycles [7][8][9][10] and the use of new refrigerants [7,11].…”