College of Energy Science and Engineering, Xi’an University of Science and Technology
Key Laboratory of Western Mine Exploitation and Hazard Prevention, Ministry of Education,Xi’an University of Science and Technology
College of Architecture and Civil Engineering, Xi’an University of Science and Technology

为明确太阳能耦合充填体热泵跨季节蓄热系统参数,选取对充填体温度场变化和蓄/释热效果的影响,通过正交试验法对集热器面积、蓄热水箱体积与集热器面积比、充填体导热系数、地埋管管间距、埋管管材导热系数进行多因素研究,通过建筑负荷对太阳能耦合充填体热泵跨季节蓄热系统进行设计并采用TRNSYS软件建模,开展五水平五因素正交试验,通过选择系统蓄热率以及蓄热耗电比2个指标得出最优参数方案并进行10a运行模拟。结果表明:集热器面积和充填体导热系数变化对充填体蓄热率有显著影响,蓄热水箱体积与集热器面积比则对其基本无影响;集热器面积和充填体导热系数以及埋管管材导热系数对蓄热耗电比有显著影响,蓄热水箱体积与集热器面积比和地埋管管间距则对其影响程度很小;将优化后的方案与原方案进行对比,蓄热率提高了12.65%;蓄热耗电比降低了28.17%,集热器集热量和充填体蓄热量分别提高了30.73%和39.49%。优化后系统应用价值显著提升,为后期研究太阳能耦合充填体热泵系统提供理论支持。

In order to determine the influence of parameter selection of cross-season heat storage system of solar coupled backfill heat pump on the change of backfill temperature field and heat storage / release effect, multi-factor studies on collector area, storage tank volume to collector area ratio, backfill thermal conductivity, buried pipe spacing and buried pipe thermal conductivity were carried out by orthogonal test method, and the optimal scheme was selected. The cross-season heat storage system of solar cou- pled backfill heat pump was designed by building load and modeled by TRNSYS software, and then the five-level and five-factor orthogonal test was carried out. The optimal parameter scheme was obtained by selecting the heat storage rate and the power consumption ratio of the system, and the ten-year opera- tion simulation was carried out. The results show that the collector area and the thermal conductivity of the backfill have significant effects on the heat storage rate of the backfill, but the ratio between the volume of the storage tank and the collector area has little effect. The collector area, the thermal con- ductivity of the backfill and the thermal conductivity of the buried pipe have significant effects on the ratio of heat storage and power consumption, while the ratio of the volume of the storage tank to the col- lector area and the distance between the buried pipes have little effects. By comparing the optimized scheme with the original scheme, the heat storage rate is increased by 12. 65% . The heat storage and power consumption ratio is decreased by 28. 17% , the collector heat and the backfill heat storage are increased by 30. 73% and 39. 49% , respectively. After optimization, the application value of the system is significantly improved, which provides theoretical support for the later research of solar coupled backfill heat pump system.

国家自然科学基金项目(52104148,52274063);中国博士后科学基金项目(2021M692593)第一作者:赵玉娇,女,陕西西安人,博士,副教授,E-mail:zhaoyujiao@xust.edu.cn

赵玉娇,王梦瑶,刘浪,等.太阳能耦合充填体热泵跨季节蓄热系统影响因素[J].西安科技大学学报,2024,44(2):349-358.

ZHAO Yujiao, WANG Mengyao, LIU Lang, et al. Influencing factors of cross-season heat storage system of solar coupled backfill heatpump[ J] . Journal of Xi’an University of Science and Technology, 2024, 44( 2) : 349-358.