Annual Operation Analysis of PV/T-Coupled Ground-Source Heat Pump System with Cross-Season Heat Storage in Cold Regions
Based on the photovoltaic/thermal (PV/T) coupld ground-source heat pump (GSHP) system with cross-season heat storage for a office building in Jinan, the annual operating characteristics of the coupled system were explored through on-site testing combined with TRNSYS and Geostar simulations. The grou...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Journal of Refrigeration Magazines Agency Co., Ltd.
2025-01-01
|
| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails?columnId=103685019&Fpath=home&index=0 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Based on the photovoltaic/thermal (PV/T) coupld ground-source heat pump (GSHP) system with cross-season heat storage for a office building in Jinan, the annual operating characteristics of the coupled system were explored through on-site testing combined with TRNSYS and Geostar simulations. The ground temperature and energy efficiency of the coupled system and single GSHP system during a ten-year operation were compared and analyzed. The results showed that the integrated energy efficiency ratio of the system was above 1.5 during heating/cooling seasons, with a maximum of 2.21. The renewable energy fraction contributed by PV/T components performed the best during the transition season, peaking at 0.9 in April. In summer, the injection of PV/T heat inhibits the performance of heat pumps, COP is 10.5% lower and IEER is 4.97% lower than that in winter. After ten years of operation, the soil temperature of the coupled system decreased by 0.13℃, the integrated energy efficiency ratio decreased from 1.24 to 1.22, and the renewable heat fraction decreased from 0.459 to 0.443. However, the soil temperature of the single GSHPs decreased by 0.7℃, and the integrated energy efficiency ratio decreased from 1.195 to 1.15. The PV/T coupled ground source heat pump system achieves soil thermal balance regulation and coordinated optimization of cooling, heating, and power, providing an efficient and sustainable clean energy solution for cold regions. |
|---|---|
| ISSN: | 0253-4339 |