Annual Operation Analysis of a PV/T-Coupled Ground-Source Heat Pump System with Cross-Seasonal Heat Storage in Cold Regions

Lü Xueping; Yu Tao; Song Enqiang; Li Xiangdong; Zhuang Zhaoyi

doi:10.12465/issn.0253-4339.20250321001

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Annual Operation Analysis of a PV/T-Coupled Ground-Source Heat Pump System with Cross-Seasonal Heat Storage in Cold Regions

更新时间：2026-06-01

- Annual Operation Analysis of a PV/T-Coupled Ground-Source Heat Pump System with Cross-Seasonal Heat Storage in Cold Regions
- Journal of Refrigeration Vol. 47, Issue 3, Pages: 93-99(2026)
- 作者机构：
  
  1.山东建筑大学热能工程学院济南 250101
  2. 山东万邦科技发展集团有限公司济南 250100
  3. 山东省建筑设计研究院有限公司济南 250001
- 作者简介：
- 基金信息：
- DOI：10.12465/issn.0253-4339.20250321001
  CLC： TK513.5;TK529;TU83
- Received：21 March 2025，
  
  Revised：2025-04-17，
  
  Accepted：24 April 2025，
  
  Published：16 June 2026
- 稿件说明：
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吕雪平,于涛,宋恩强等.寒冷地区PV/T耦合地源热泵跨季蓄能系统全年运行分析[J].制冷学报,2026,47(03):93-99.

Lü Xueping,Yu Tao,Song Enqiang,et al.Annual Operation Analysis of a PV/T-Coupled Ground-Source Heat Pump System with Cross-Seasonal Heat Storage in Cold Regions[J].Journal of Refrigeration,2026,47(03):93-99.
吕雪平,于涛,宋恩强等.寒冷地区PV/T耦合地源热泵跨季蓄能系统全年运行分析[J].制冷学报,2026,47(03):93-99. DOI： 10.12465/issn.0253-4339.20250321001.

Lü Xueping,Yu Tao,Song Enqiang,et al.Annual Operation Analysis of a PV/T-Coupled Ground-Source Heat Pump System with Cross-Seasonal Heat Storage in Cold Regions[J].Journal of Refrigeration,2026,47(03):93-99. DOI： 10.12465/issn.0253-4339.20250321001.

摘要

基于济南市某办公建筑的PV/T耦合地源热泵跨季蓄能系统，将实测与TRNSYS仿真和GeoStar模拟相结合，探讨耦合系统的全年运行特性，对比分析耦合系统与单一地源热泵系统运行10年的地温和能效变化。结果表明：耦合系统制冷季与供暖季综合能效比均高于1.5，最高可达2.21；可再生能源分数在过渡季表现最佳，4月可达0.9；夏季，PV/T余热的注入对热泵性能存在抑制，热泵平均COP比冬季降低10.5%，综合能效比冬季低4.97%。运行10年，耦合系统土壤温度下降0.13 ℃，综合能效比由1.24降至1.22，可再生热分数从0.459降至0.443；单一地源热泵系统的土壤温度下降0.7 ℃，综合能效比由1.195降至1.15。PV/T耦合地源热泵系统通过“夏蓄冬用”实现了土壤热平衡调控与冷热电协同优化，为寒冷地区提供了高效可持续的清洁能源解决方案。

Abstract

The annual operating characteristics of a photovoltaic/thermal （PV/T）-coupled ground-source heat-pump （GSHP） system with cross-seasonal heat storage for an office building in Jinan were investigated via on-site testing combined with TRNSYS and GeoStar simulations. For a ten-year operation period， the ground temperature and energy efficiency of the coupled and single GSHP systems were compared and analyzed. The results showed that the integrated energy efficiency ratio （IEER） of the coupled system exceeded 1.5 during the heating/cooling seasons， peaking at 2.21. The renewable energy fraction contributed by the PV/T components was highest during the transition season， peaking at 0.9 in April. In summer， the injected heat from PV/T inhibited the performance of the heat pumps， and the coefficient of performance （COP） and the IEER were 10.5% and 4.97% lower than those in winter. Over the ten-year operation period， for the coupled system， the soil temperature decreased by 0.13 ℃， IEER decreased from 1.24 to 1.22， and the renewable heat fraction decreased from 0.459 to 0.443. For the standalone GSHP system， in contrast， the soil temperature decreased by 0.7 ℃ and the IEER decreased from 1.195 to 1.15. The PV/T-coupled ground source heat pump system achieved soil thermal balance regulation and coordinated optimization of cooling， heating， and power， thus providing an efficient and sustainable clean energy solution for cold regions.

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