A performance analysis of absorption heat pump using R1234ze(E) and ionic liquid for PEMFC(Proton-Exchange Membrane Fuel Cells) vehicles

摘要

Absorption heat pump system using R1234ze(E)/ionic fluid is developed for cooling and heatingapplication in Proton-Exchange Membrane Fuel Cells (PEMFC) vehicles. Waste heat from thePEMFC is utilized as the heat source of the absorption heat pump system. A low global warmingpotential (GWP) refrigerant of (R1234ze(E)) and an ionic fluid of [hmim][Tf2N] are used as refrigerantand absorbent, respectively. Additionally, the heat pump system is assisted by a compressor placedbetween evaporator and absorber. Cooling and heating performance of the absorption heat pump isevaluated under various generator and absorber temperatures and concentrations. The results showthat the coefficient of performance of refrigeration (COP_c) is up to 0.566 and the COP of heatpump(COP_H) is up to 1.517.