季节条件对于地源热泵系统运行的影响

Effect of Seasonal Conditions on the Operation of a Geothermal Pump System

随着常规能源的不断消耗,人类对可再生能源的需求日渐增强。而地源热泵作为一种先进、高效、节能、环保的技术,得到了众多研究者的关注。地源热泵可以利用建筑地下温度恒定的特点从地下取热/冷,具有零污染的良好品质。通过实验对比了夏季和冬季不同条件对于地源热泵运行系统的影响,得到了如下结论:如果单纯从地下取热或取冷,在地源热泵周围的地下温度在3个月后会发生显著的变化,而使得系统不能够继续正常运行。只有在热泵系统采用交替从地下取热和取冷的模式后,地下土壤才能保持其作为热源的能力。

With the continuous consumption of conventional energy sources,the demand of human beings for regenerative energy sources will grow with each passing day. As a kind of advanced,highly effective,energy-saving and environment-protection technology,geothermal pumps have attracted the attention of numerous researchers. The geothermal pumps can make use of the constant temperature under buildings to take the heat/cooling energy under the ground,achieving a good quality of zero pollution. Through experiments,the effect of different conditions in winter and summer on the operation of a geothermal pump system has been compared. The authors have come to the following conclusion: if the heat or cooling energy under the ground is taken purely and simply,a remarkable change will occur to the underground temperature around the geothermal pumps after three months,causing the system impossible to continue its normal operation. Only when a mode of alternatively taking heat and cooling energy under the ground is adopted for the geothermal pump systems,will the underground soil retain its ability to serve as a heat source.