太阳能+地源热泵并联热水系统冬季运行特性研究
Operating characteristics of solar energy and GSHP parallel connection hot water system in winter
摘要：
利用笔者设计的太阳能+地源热泵并联热水系统实验平台，研究了该系统在冬季太阳能辐照量不足的情况下的运行特性。结果表明，采用太阳能+地源热泵并联热水系统不但可以满足学生公寓对生活热水的需求，而且总体效率保持在4.0以上，其中地源热泵系统在日均运行时间达16 h的冬季依然保持着较高的性能，其COP值均值为3.0。太阳能+地源热泵并联热水系统在冬季宜采用地源热泵为主热源、太阳能为辅助热源或完全采用地源热泵制热的运行模式。
关键词：热水系统,太阳能,地源热泵,并联系统
Abstract：
Using the experimental platform designed by the authors, studies the operating characteristics in winter when the solar radiation is insufficient. The results indicate that the system can satisfy the domestic hot water demand in the student hostel, and the overall efficiency maintains above 4.0, the average COP of the GSHP is 3.0 when the daily running hours are up to 16 in winter. Suggests that it is better to use the GSHP as primary heat source and solar energy as secondary heat source, or only the GSHP as heat source in winter.
Keywords:hot water system, solar energy, GSHP, parallel connection system