Experimental Study of the Performance of an Electrically-driven Free-piston Stirling Heat Pump
Heat pump heating technology can effectively reduce the energy consumption and en-vironmental pollution caused by coal-fired heating.However,the low-temperature adaptability of commonly used heat pump heating systems is poor,making it difficult to meet the heating demand in cold regions.Considering that Stirling heat pump technology has a wide range of available tempera-ture zones,an electrically-driven free-piston Stirling air source heat pump is developed in this paper to investigate its heating performance under different climatic conditions.The experimental results show that the overall coefficient of performance of the Stirling heat pump reaches 2.31,1.97 and 1.78 for normal,cold and very cold regions,respectively.In addition,the relative Carnot efficiency of the Stirling heat pump gradually increases with rising heat-pumping temperature difference.Its advantage is more obvious at large heat-pumping temperature difference.
万方数据
维普
