Zhen Bing, Liu Zonghua, Wang Qixiao, et al. Research on Improving the Performance of Air- source Heat Pump[J]. Journal of Refrigeration, 2007, 28(1): 12-17.
DOI:
Zhen Bing, Liu Zonghua, Wang Qixiao, et al. Research on Improving the Performance of Air- source Heat Pump[J]. Journal of Refrigeration, 2007, 28(1): 12-17. DOI: 10.3969/j.issn.0253-4339.2007.01.003.
Research on Improving the Performance of Air- source Heat Pump
The problems for heat pumps operating at low ambient temperatures were analyzed.A by-pass capillary tube was added on the discharge pipe behind the four-way valve and a tube was added in an accumulator in a heat pump system to solve the problem.The minimum heat transfer area of the tube for subcooling and the optimal length range of the by-pass capillary tube were determined.The experiment results show that heat output of the improved heat pump increased greatly at low ambient temperatures.