Performance Analysis of Heat Pump Cycle with an Expander

Performance Analysis of Heat Pump Cycle with an Expander

A simulation investigation have been carried out to research the relationships between rejection pressure and related operating parameters and the performance of a heat pump cycle with an expander (HPCE) respectively using CO2 and R134a as refrigerant. With the increase of exhaust pressure, the CO2...

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Veröffentlicht in:Applied Mechanics and Materials 2013-09, Vol.411-414, p.3006-3009
Hauptverfasser: Liu, Guang Da, Zhou, Zhen Jiang, Xue, Gui Jun, Li, Shui Qing, Ye, Yun Wang, Liang, Da Wei, Xu, Fang
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container_title Applied Mechanics and Materials
container_volume 411-414
creator Liu, Guang Da
Zhou, Zhen Jiang
Xue, Gui Jun
Li, Shui Qing
Ye, Yun Wang
Liang, Da Wei
Xu, Fang
description A simulation investigation have been carried out to research the relationships between rejection pressure and related operating parameters and the performance of a heat pump cycle with an expander (HPCE) respectively using CO2 and R134a as refrigerant. With the increase of exhaust pressure, the CO2 cycle has an optimum rejection pressure that is 8.667MPa, and the maximal COP is 4.189, in addition, R134a cycle is a reducing trend. When the Condensing temperature of compressor is gradually increasing, the performances of CO2 cycles gradually decline, but the R134a cycle just has small changes. With the increasing of evaporating temperature, the performances of all cycles are an increasing trend.
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