热泵热水系统的设计及应用

Design and Application of Hot Water System of Heat Pump

众所周知,地源热泵技术集夏季制冷、冬季供暖、常年提供生活热水三种功能于一体,与常规空调相比具有显著的环保、节能的优点。但是在实际的应用案例中,却仅有少部分项目利用了热泵提供生活热水的功能,这是为什么呢?热泵系统因为其造价高,进出水温差小、最高出水温度低等因素的影响,造成了其与给水排水专业设计中生活热水系统的脱轨。同时热泵热水系统又怎么与其他技术的热水系统相结合等因素都限制了热泵热水技术的应用。本文结合热泵提供生活热水的实际案例,介绍了生活热水设计的特点,总结了热泵生活热水系统的分类、设计原理、各自的优缺点和适宜场所。文章最后介绍了热泵热水系统对原水水质的要求和相关设备的选型问题。

As everyone knows, the ground source heat pump technology has the three functions of making cool in summer, supplying heat in winter, and supplying heat living water in the year around. Compared with conventional air-conditioning, it has signifi cant role on environmental protection and energy-saving. But in practice, only a small amount of heat pump projects can be used to provide hot water. Why？ Firstly, the heat pump system costs higher; secondly, the temperature difference of inlet and outlet water is lower; thirdly, the highest water temperature is not higher. These above shortcomings make it hard to meet requirement of living hot water supplying system. In addition, how to make heat pump system to coordinate other hot water system limits its application in a wide sector. In this paper, according to the practical case of heat pump project, introduces the characteristics of supplying system of living hot water, summarizes the classifi cation and working principles of supplying hot water system of heat pump, and compares the advantages and disadvantages of these supplying hot water systems. Finally, this paper introduces the equipments＇ selection problems and water quality requirements of heat pump system.