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Performance study of split type ground source heat pump systems combining with solar photovoltaic-thermal modules for rural households in North China
Energy and Buildings ( IF 6.7 ) Pub Date : 2021-06-17 , DOI: 10.1016/j.enbuild.2021.111190
Yan Ruoping , Yang Xiangru , Yu Xiaohui , Bai Yunpeng , Wang Huajun

Ground source heat pump systems are gradually accepted and used for space heating in winter and air-conditioning in summer for rural households in North China. To keep geothermal equilibrium, a split type ground source heat pump system combining with solar photovoltaic-thermal (STGSHP-PV/T) simulation model is established. The operating performance of the STGSHP-PV/T system has been investigated. Results show that the coefficient of performance (COP) of heat pump units during the heating and cooling period is 3.53 and 2.81, respectively. Except providing spacing heating and cooling for separated rural households, the system offers other accessibility options including power generation and domestic hot water supply. During the operation of STGSHP-PV/T system, the PV panel temperature maintains at a relatively lower operating temperature and higher PV efficiency. The comprehensive performance coefficient of PV/T component is about 66 %, and the power generated by PV/T module is greater than that consumed by heat pump units by approximately 1278.1 kWh, which can achieve zero-energy buildings during the whole year. Moreover, the average soil temperature increases gradually under the long term operation of the STGSHP-PV/T system, and the increase rate is 0.12 to 0.26 °C per year, within an acceptable range.



中文翻译:

华北农村家庭分体式地源热泵系统结合太阳能光伏热能组件的性能研究

地源热泵系统逐渐被华北地区农村家庭接受并用于冬季采暖和夏季空调。为保持地热平衡,建立 了分体式地源热泵系统结合太阳能光热(STGSHP-PV/T)模拟模型。研究了 STGSHP-PV/T 系统的运行性能。结果表明,热泵机组在制热和制冷期间的性能系数(COP)分别为3.53和2.81。除了为分离的农村家庭提供间隔供暖和制冷外,该系统还提供其他无障碍选项,包括发电和生活热水供应。STGSHP-PV/T系统运行过程中, 光伏面板温度保持在相对较低的工作温度和较高的光伏效率。PV/T组件综合性能系数约为66%,PV/T组件产生的电能比热泵机组消耗的电能多约1278.1千瓦时,可实现全年建筑零能耗。此外,在STGSHP-PV/T系统长期运行的情况下,平均土壤温度逐渐升高,每年增加0.12~0.26℃,在可接受的范围内。

更新日期:2021-06-17
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