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The performance of mixture refrigerant R134a/R152a in a novel gas engine-driven heat pump system

机译：混合制冷剂R134a / R152a在新型燃气发动机驱动的热泵系统中的性能

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摘要

In the present article, a novel gas engine-driven heat pump (GEHP) which could independently provide heating,cooling, and hot water for the buildings with its autonomous power supply system was presented, and thecooling performance characteristics of GEHP using mixture refrigerant R134a/R152a were investigatedexperimentally. The thermophysical properties and flammability of this proposed mixture refrigerant wereanalyzed and experimented to approve that it could be used safely in GEHP. The experimental results indicatedthat the cooling capacity, waste heat recovered from cylinder jacket and exhaust gas, gas engine energyconsumption, and compressor power increased with the increase of the gas engine speeds and evaporator waterinlet flow rate, but changed in a small range with the increase of the evaporator water inlet temperature exceptcooling capacity. The generator power remained about 4.90 kW in different operating conditions. Furthermore,the coefficient of performance (COP) and the primary energy ratio (PER) of GEHP also increased with theincrease of the evaporator water inlet flow rate and temperature, but decreased with the increase of gas enginespeeds. Finally, maximum COP and PER with mixture refrigerant R134a/R152a has been estimated with 8.88and 1.69 in the aforementioned conditions.
机译：本文提出了一种新型的燃气发动机驱动的热泵（GEHP），它可以通过其独立的电源系统为建筑物独立地提供供热，制冷和热水，并且GEHP使用混合制冷剂R134a /的制冷性能特征对R152a进行了实验研究。分析并实验了该混合制冷剂的热物理性质和可燃性，并证明该制冷剂可安全用于GEHP。实验结果表明，冷却能力，从汽缸套和废气中回收的废热，燃气发动机的能耗和压缩机功率随燃气发动机转速和蒸发器进水流量的增加而增加，但随着转速的增加而在较小范围内变化。除冷却能力外，蒸发器进水温度。在不同的运行条件下，发电机功率保持在约4.90 kW。此外，GEHP的性能系数（COP）和一次能量比（PER）也随着蒸发器进水流量和温度的增加而增加，但随着燃气发动机转速的增加而降低。最后，在上述条件下，混合制冷剂R134a / R152a的最大COP和PER估计为8.88和1.69。

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