In order to improve the performance of air source heat pump and better meet the special technical requirements of wellhead antifreeze,an air source split heat pipe heat pump heating system ex-perimental platform was built by coupling air source heat pumps with heat pipe technology and using a small pressure ratio heat pump unit.In this coupled system,phase change heat transfer is adopted at both ends of the evaporator and condenser,and their performance characteristics under different opera-ting conditions are studied.The results show that even under outdoor conditions around 0℃,the Coe-fficient of Performance(COP)can still reach 4.5 or above,far superior to traditional air source heat pump units.
split heat pipesmall pressure ratio heat pump unitphase change heat transfernew heating system
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