Abstract
Groundwater source heat pump (GWSHP) as a promising renewable energy utilization technology has been widely used in building heating and cooling. But heat breakthrough and groundwater injection have become gradually revealed engineering problems in groundwater heat utilization process. Testing evaluation is an important means to understand the reliability of the practical application of GWSHP. This paper took a residential use of GWSHP system in Yangling Normal Community as study object, focusing on the analysis of “heat breakthrough,” briefly illustrating the groundwater injection. Collected a year’s operating data, mainly including pumping and injection wells water temperature, supply and return water temperature of water source heat pump unit’s evaporator/condenser and outdoor air temperature in winter and summer. The relationship between groundwater temperature repair and heat breakthrough and injection rate were obtained through analyzing the operation test data. These operating parameters are all in the safe operation range of heat pump unit. The results show that heat transport between production water well and injection water well is not significant, and the groundwater temperature restoration is suitable, thus the GWSHP system runs normally and meets the requirement of reliability for residential building air-conditioning application in Yangling Normal Community.
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