Experiments on heating capacity of air-source heat pump based on gas-injection technology for scroll compressor

Based on gas-injection technology for scroll compressor, develops the prototype of low-temperature air-source heat pump unit, and performs the performance test. Compares the performances of the prototype and conventional heat pump units by experiments, and the results show that under the environmental condition with temperature between -10 ℃ and 2 ℃, the heating capacity of the prototype can be improved by up to 28.9%, which is increased by 16.7% on average, and the coefficient of performance is improved by up to 29.5%,which is increased by 15.7% on average.