基于建筑负荷特性的地埋管地源热泵系统适用性研究
Applicability research on ground-source heat pump system based on building load characteristics
摘要：
基于建筑负荷对地埋管地源热泵系统运行性能的影响给出了2个建筑负荷特性指标：建筑全年累计冷热负荷比R和建筑峰值冷热负荷比K。针对寒冷气候区的典型办公建筑，计算了5种R值和2种K值条件下地埋管地源热泵系统的地埋管进出口温度、土壤温度及热泵性能系数，得出了适用于地埋管地源热泵系统的R值范围为0.6~0.8，同时给出了不同K值条件下地埋管换热器的设计依据。
Abstract：
Presents two indexes of building load characteristics which influencing the operation performance of ground-source heat pump system. One is the ratio of the annual accumulated cooling load to the annual accumulated heating load, represented by R, and the other is the ratio of the maximum cooling load to the maximum heating load, represented by K. Taking a typical office building in cold climate zone as an example, simulates the inlet and outlet temperature of the ground heat exchanger, the soil temperature and the COP of heat pump for five types of R values and two types of K values. The results indicate that it is suitable for ground-source heat pump system when the R value ranges from 0.6 to 0.8. Also gives the design basis for ground heat exchanger in the conditions of different K values.
Keywords:ground-sourceheatpump,buildingloadcharacteristic,ratioofannualaccumulatedcoolingloadtoannualaccumulatedheatingload,ratioofmaximumcoolingloadtomaximumheatingload,inletandoutlettemperatureofgroundheatexchanger,soiltemperat