Xiang Yin

TL;DR: In this paper, an experiment was conducted and the effect of refrigerant charge was evaluated with energy, exergy, economic and environmental analyses, which showed that the optimal normalized fronter charge was 0.214 in the comprehensive analysis.

TL;DR: In this paper, a theoretical model was developed to investigate the effects of the pinch point in gas cooler and the utilization of internal heat exchanger (IHX) on the optimal discharge pressure and system performance.

TL;DR: In this article, a hot gas bypass defrosting method was experimentally investigated for transcritical CO2 heat pumps. And the results showed that the measured parameters change gradually during the defrostation process except for the initial stage and defrost time is within the standard regulations.

TL;DR: In this paper, an experimental investigation on the influence of the various internal heat exchanger (IHX) effectiveness on a transcritical CO2 mobile air conditioning system was presented, where the effects of IHX effectiveness on the cooling capacities and coefficient of performance were studied under various outdoor air temperatures (30, 35 and 40 ℃) and compressor speeds (2000 to 7000 rev·min−1).

TL;DR: In this article, the authors analyzed the influence of various factors on the system performance of the gas engine-driven heat pump system with waste heat recovery, and the experimental test is also carried out to validate the simulation models.