Abstract: In this paper,an energy-efficient air source gas engine-driven heat pump（GHP）experimental platform was built innovatively based on the use of scroll compressors with R410A.The cooling performance characteristics of the GHP system were investigated.The changes of cooling capacity（Q·c）,gas consumption power(P_gas),compressor power(P_comp),primary energy ratio(R_PER),total primary energy ratio(R_PER,all)and coefficient of performance(R_COP)were obtained under the conditions of a wide range of water inlet temperatures t_w,in（8.8-18.8℃），engine speeds N_eng（1400-2400 r/min）,ambient air temperatures T_amb（24-43℃）and water inlet flow rates G_w（9.16-18.32 m~3/h）.The results show that R_PERis affected by both R_COPand engine thermal efficiency η_eng.In cooling operation,R_PER,R_PER,alland η_engare between 0.935-1.224,1.388-1.720 and 27.56%-35.25%,respectively.According to the uncertainty analysis,the maximum relative uncertainties of Q_c,P_gasand R_PERare 5.61%,1.00%and 5.70%respectively,indicating that the test results are stable and reliable.