太阳能-土壤储热方式的研究
王恩宇¹，张鑫¹，樊海鹰²，于浦³，张学友¹，沈海笑¹
（1.河北工业大学能源与环境工程学院，天津 300401；2.怀安县住房和城乡建设局，河北 怀安 075000；3.河北工业大学（张北）
产业技术研究院，河北 张北 075000）
摘要： 太阳能-土壤储热是解决地源热泵热源不足问题的重要措施。储热方式不同，集热量、储热量和储热能效比也
不同。实验结果表明：当日总辐照量由10 MJ/m²增加至30 MJ/m² 时，直接储热模式下日均集热效率由0.474 7 增长至
0.502 1，日总储热量由63.10 kW·h 增长至208.90 kW·h；间接储热模式下日均集热效率由0.359 8 增至0.507 2，日总储
热量由53.53 kW·h 增长至195.81 kW·h；当日总辐照量高于13.94 MJ/m²时，间接储热模式下日均热损率大于直接储热模
式日均热损率，且差值逐步增大；直接储热模式日均储热能效比随日总辐照量变化但维持在35 以上，而间接储热模式的
日均储热能效比范围为15.54 ～17.28；直接储热模式在张北县更加适用，可以有效提高系统在非供热季的运行效率。
关键词： 太阳能；土壤储热；储热模式
中图分类号： TU83      文献标志码： A      文章编号： 2095-0802-(2023)09-0001-05
Study on Solar-soil Heat Storage Mode
WANG Enyu¹, ZHANG Xin¹, FAN Haiying², YU Pu³, ZHANG Xueyou¹, SHEN Haixiao¹
(1. School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China; 2. Housing and
Urban-rural Development Bureau of Huai'an, Huai'an 075000, Hebei, China; 3. Industrial Technology Research Institute, Hebei
University of Technology (Zhangbei), Zhangbei 075000, Hebei, China)
Abstract: Solar-soil heat storage is an important measure to solve the problem of insufficient heat source of ground source heat
pump. The different ways of heat storage will affect the difference of heat collection, heat storage and heat storage efficiency ratio.
The experimental results show that when the total irradiation of the day increases from 10 MJ/m² to 30 MJ/m², the average daily
heat collection efficiency under the direct heat storage mode increases from 0.474 7 to 0.502 1, and the daily total heat storage
increases from 63.10 kW·h to 208.90 kW·h; under the indirect heat storage mode, the average daily heat collection efficiency
increased from 0.359 8 to 0.507 2, and the total daily heat storage increased from 53.53 kW·h to 195.81 kW·h; when the total
irradiation of the day is higher than 13.94 MJ/m², the average daily heat loss rate under the indirect heat storage mode is higher
than that under the direct heat storage mode, and the difference gradually increases; the average daily heat storage efficiency ratio
of the direct heat storage mode varies with the total daily irradiation but maintains above 35, while the average daily heat storage
efficiency ratio of the indirect heat storage mode varies between 15.54 - 17.28; the direct heat storage mode is more applicable in
Zhangbei County, which can effectively improve the operation efficiency of the system in non-heating seasons.

 Key words: solar energy; soil heat storage; heat storage mode