低温强热型空气源热泵热水器实验研究

Experiments of Heat-flash Type Pump Water Heater Low Temperature Air Source Heat

采用中间喷射的涡旋热泵热水器专用压缩机及带经济器的系统设计，构成低温喷气增焓热泵热水器实验系统。实验结果表明：该系统能在-20℃-45℃环境下正常运行，制取65℃较高温度的热水。系统在环境温度高于20℃，且最高出水温度达到65℃时，能效此（COP）在5．4以上；在-15℃环境温度下COP依然能够保持在2：0以上；在-7℃-7℃段制热能力比目前常规热泵系统提高21％-28．9％。有效的扩大了（非二氧化碳）热泵系统的气候适应范围。

Adopting the midinjection compressor that exclusive for scroll type heat pump water heater and the designed system with economized equipment, to form a low-temperature Economized Vapor Injection heat pump water heater experimental system. Theexperiment results shows that this system could operate normally at ambient temperature-20℃ to 43 ℃, and be able to produce 65℃ hot water. When this system operate at an ambient temperature more than 20℃, and the hightest outlet water reachs 65℃, the COP could be and even more than 3.4, the COP of system still maintained at 2.0 even at ambient temperature -15 ℃; when operating at -7℃- 7℃, the heating capacity could increase 21% -- 28.9% compare to the conventional heat pump system. It efficiently enlarge the acclimation scope of heat pump system （Non- Carbon Dioxide）.