适用于低温工况的空气源热泵热水器研究现状

Research situation of air-source heat pump water heater applied to low-temperature conditions

CO2热泵热水器、双级压缩热泵热水器和复叠式热泵热水器均具有良好的低温适应性,可以较好解决普通单级热泵热水器在低温环境下无法稳定有效运行的问题。本文通过归纳总结这3种热泵系统国内外研究现状,详细分析各自的优点以及主要发展制约因素,并提出今后的研究与发展方向,为进一步的研究提供参考依据。

The CO2 heat pump,double-stage heat pump and cascade heat pump water heaters all have better low-temperature adaptability,which can solve the problem that single stage heat pump water heater couldn＇t effectively work in low-temperature environment.Through concluding both domestic and international research situation,analyzing the advantages and the main restricting development factors of these three type heat pump systems,the future research and development directions are put forward,which provides references for the further study.