PERFORMANCE ANALYSIS OF SOLAR-ASSISTED GROUND SOURCEHEAT PUMP SYSTEM WITH SEASONAL THERMAL ENERGY STORAGE IN COLD REGIONS

Huang Lizhe; Li Jiadong; Du Chuang; Jia Yimeng; Sun Gang; Zhang Dongwei

doi:10.19912/j.0254-0096.tynxb.2024-1805

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (7) : 579-589. DOI: 10.19912/j.0254-0096.tynxb.2024-1805

PERFORMANCE ANALYSIS OF SOLAR-ASSISTED GROUND SOURCEHEAT PUMP SYSTEM WITH SEASONAL THERMAL ENERGY STORAGE IN COLD REGIONS

Huang Lizhe¹, Li Jiadong², Du Chuang¹, Jia Yimeng¹, Sun Gang¹, Zhang Dongwei³

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Abstract

To address the instability of standalone solar heating systems and the imbalance between heating and cooling demands in ground source heat pump （GSHP） systems, a solar collector-ground source heat pump system with seasonal thermal energy storage is proposed to stabilize building heating demand. The proposed solar-assisted seasonal thermal storage GSHP system was modeled using the TRNSYS simulation software and compared with a conventional standalone GSHP system. The impacts of soil temperature variation, heat pump performance, system electricity consumption, and equipment cost were systematically investigated. The results indicate that after five years of operation, the soil temperature in the standalone GSHP system decreases significantly, leading to a reduction in the system coefficient of performance （COP） from 3.75 to 3.51, with an annual electricity consumption of 83965 kW·h. In contrast, the soil temperature in the solar-assisted GSHP system remains nearly stable, and the system COP is maintained at approximately 3.91, with a reduced annual electricity consumption of 77428 kW·h. Although the initial equipment cost of the solar-assisted GSHP system increases by 145100 yuan, the annual operating cost is reduced by 19200 yuan, resulting in a payback period of 7.55 years. Overall, the results demonstrate that the solar-assisted ground source heat pump system with seasonal thermal energy storage is well suited for building heating applications in cold regions.

Key words

solar energy / thermal energy storage / ground source heat pumps / seasonal thermal energy storage / coefficient of performance / cold regions

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Huang Lizhe, Li Jiadong, Du Chuang, Jia Yimeng, Sun Gang, Zhang Dongwei. PERFORMANCE ANALYSIS OF SOLAR-ASSISTED GROUND SOURCEHEAT PUMP SYSTEM WITH SEASONAL THERMAL ENERGY STORAGE IN COLD REGIONS[J]. Acta Energiae Solaris Sinica. 2026, 47(7): 579-589 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1805

References

[1] Zhao L Y, Jia H N.Study on the energy-saving reconstruction method of the outer architecture envelope of urban public architecture[J]. International Journal of Global Energy Issues, 2020, 42(5/6): 443.
[2] Li H Y, Bi Y H, Wang H Y, et al.Multi-objective optimization of an absorption solar-ground source heat pump considering the environmental and economic performance[J]. International Journal of Green Energy, 2023, 20(11): 1177-1190.
[3] Lu S L, Zhai X, Wang R, et al.System optimization and mode modification of the solar assisted ground source heat pump system for primary schools in northern rural areas of China[J]. Solar Energy, 2023, 262: 111879.
[4] 孙畅, 张磊, 张广宇, 等. 太阳能-地源热泵系统控制策略及运行特性研究[J]. 太阳能学报, 2024, 45(1): 95-101.
Sun C, Zhang L, Zhang G Y, et al.Study on control strategy and operation characteristics of solar-ground source heat pump system[J]. Acta Energiae Solaris Sinica, 2024, 45(1): 95-101.
[5] Nardecchia F, Pompei L, Egidi E, et al.Exergoeconomic and environmental evaluation of a ground source heat pump system for reducing the fossil fuel dependence: a case study in Rome[J]. Energies, 2023, 16(17): 6167.
[6] Xu Z, Lu J R, Xing S G.Thermal performance of greenhouse heating with loop heat pipe solar collector and ground source heat pump[J]. Results in Engineering, 2022, 15: 100626.
[7] Zhang X Y, Wang E Y, Liu L S, et al.Analysis of the operation performance of a hybrid solar ground-source heat pump system[J]. Energy and Buildings, 2022, 268: 112218.
[8] Liu X B, Spitler J D, Qu M, et al.Recent developments in the design of vertical borehole ground heat exchangers for cost reduction and thermal energy storage[J]. Journal of Energy Resources Technology, 2021, 143(10): 100803.
[9] Wu W, You T, Wang B L, et al.Evaluation of ground source absorption heat pumps combined with borehole free cooling[J]. Energy Conversion and Management, 2014, 79: 334-343.
[10] Allaerts K, Coomans M, SalenbieN R. Hybrid ground-source heat pump system with active air source regeneration[J]. Energy Conversion and Management, 2015, 90: 230-237.
[11] Girard A, Gago E J, Muneer T, et al.Higher ground source heat pump COP in a residential building through the use of solar thermal collectors[J]. Renewable Energy, 2015, 80: 26-39.
[12] Yang W B, Sun L L, Chen Y P.Experimental investigations of the performance of a solar-ground source heat pump system operated in heating modes[J]. Energy and Buildings, 2015, 89: 97-111.
[13] Razavi S H, Ahmadi R, Zahedi A.Modeling, simulation and dynamic control of solar assisted ground source heat pump to provide heating load and DHW[J]. Applied Thermal Engineering, 2018, 129: 127-144.
[14] Georgiev A, Popov R, Toshkov E.Investigation of a hybrid system with ground source heat pump and solar collectors: charging of thermal storages and space heating[J]. Renewable Energy, 2020, 147: 2774-2790.
[15] Yang W B, Zhang H, Liang X F.Experimental performance evaluation and parametric study of a solar-ground source heat pump system operated in heating modes[J]. Energy, 2018, 149: 173-189.
[16] Naranjo-Mendoza C, Oyinlola M A, Wright A J, et al.Experimental study of a domestic solar-assisted ground source heat pump with seasonal underground thermal energy storage through shallow boreholes[J]. Applied Thermal Engineering, 2019, 162: 114218.
[17] 刘启明, 高朋, 魏俊辉, 等. 土壤排取热量不均衡地区地源热泵系统应用研究[J]. 制冷与空调(四川), 2020, 34(2): 224-229.
Liu Q M, Gao P, Wei J H, et al.Application research of ground source heat pump systemin soil discharge unbalanced area[J]. Refrigeration & Air Conditioning, 2020, 34(2): 224-229.
[18] 徐辉, 蔡颖玲. 上海地区太阳能-地源热泵联合供暖土壤温变特性的研究[J]. 太阳能学报, 2016, 37(9): 2314-2319.
Xu H, Cai Y L.Study on the soil temperature variation characteristics of solar-ground source heat pump heating in Shanghai area[J]. Acta Energiae Solaris Sinica, 2016, 37(9): 2314-2319.
[19] 李好, 李勇, Shunkei Suzuki, 等. 上海地区复合式太阳能-地源热泵季节性蓄热供热系统的模拟研究[J]. 制冷技术, 2020, 40(1): 9-15.
Li H, Li Y, Shunkei Suzuki, et al.Simulation study on seasonal heat storage and heating system of hybrid solar with ground-source heat pump in Shanghai[J]. Chinese Journal of Refrigeration Technology, 2020, 40(1): 9-15.
[20] 李新国, 赵军, 王一平, 等. 太阳能、蓄热与地源热泵组合系统的应用与实验[J]. 太阳能学报, 2009, 30(12): 1658-1661.
Li X G, Zhao J, Wang Y P, et al.The application and experiment of solar-ground coupled heat pump wtth heat storage[J]. Acta Energiae Solaris Sinica, 2009, 30(12): 1658-1661.
[21] 李金平, 李彩军, 李天澍, 等. 寒冷地区户用大平板太阳能集热器-空气源热泵系统性能研究[J]. 太阳能学报, 2023, 44(5): 246-256.
Li J P, Li C J, Li T S, et al.Study on performance of household large flat plate solar collector-air source heat pump system in cold area[J]. Acta Energiae Solaris Sinica, 2023, 44(5): 246-256.
[22] 蒋能照, 刘道平. 水源·地源·水环热泵空调技术及应用[M]. 北京: 机械工业出版社, 2007.
Jiang N Z, Liu D P.Water source, ground source and water loop heat pump air conditioning technology and application[M]. Beijing: China Machine Press, 2007.
[23] GB 50495—2019 太阳能供热采暖工程技术标准[S].
GB 50495—2019 Technical standard for solar heating system[S].
[24] 李瑞, 高岩, 张世红, 等. 基于寒冷地区季节性蓄热太阳能-土壤源热泵系统太阳能集热器设计参数研究[J]. 建筑科学, 2018, 34(10): 26-31.
Li R, Gao Y, Zhang S H, et al.Research on design parameters of solar thermal collectors based on seasonal heat storage solar-soil source heat pump system in cold areas[J]. Building Science, 2018, 34(10): 26-31.
[25] 李双双. 寒冷地区跨季节蓄热型太阳能耦合地源热泵系统的优化设计[D]. 天津: 天津大学, 2020.
Li S S.Optimal design of a solar assisted ground source heat pump system with seasonal thermal energy storage in cold area[D]. Tianjin: Tianjin University, 2020.
[26] Li M,Lai A C K. Analytical model for short-time responses of ground heat exchangers with U-shaped tubes: model development and validation[J]. Applied Energy, 2013, 104: 510-516.
[27] Hlanze P, Elhefny A, Jiang Z, et al.In-duct phase change material-based energy storage to enhance building demand flexibility[J]. Applied Energy, 2022, 301: 118520.
[28] Damiano E R, Duling B R, Ley K,et al.Axisymmetric pressure-driven flow of rigid pellets through a cylindrical tube lined with a deformable porous wall layer[J]. Journal of Fluid Mechanics,1996, 314: 163-189.
[29] 张雪丹. 竖直地埋管换热器不确定性设计传热模型研究[D]. 哈尔滨: 哈尔滨工业大学, 2016.
Zhang X D.Research on heat transfer model for vertical ground heat exchanger uncertainty design[D]. Harbin: Harbin Institute of Technology, 2016.
[30] 张长兴, 郭占军, 刘玉峰, 等. 土壤源热泵非稳态热流热响应试验中岩土热物性参数的确定[J]. 农业工程学报, 2014, 30(12): 192-199.
Zhang C X, Guo Z J, Liu Y F, et al.Determining parameters of rock-soil thermal properties in thermal response test of ground-coupled heat pump under working condition of transient heat flow[J]. Transactions of the Chinese Society of Agricultural Engineering, 2014, 30(12): 192-199.
[31] Kim E J.TRNSYS g-function generator using a simple boundary condition[J]. Energy and Buildings, 2018, 172: 192-200.
[32] Ma L, Li Y, Wang J Y, et al.A thermal-dissipation correction method for in-situ soil thermal response test: experiment and simulation under multi-operation conditions[J]. Energy and Buildings, 2019, 194: 218-231.
[33] 李建伟, 鲍玲玲, 苗壮, 等. PV/T耦合中深层地源热泵供暖系统运行特性研究[J]. 太阳能学报, 2024, 45(9): 219-227.
Li J W, Bao L L, Miao Z, et al.Study on operation characteristics of PV/T coupled middle-deep ground source heat pump heating system[J]. Acta Energiae Solaris Sinica, 2024, 45(9): 219-227.