STUDY ON PERFORMANCE OF HEATING SYSTEM USING PV/T-HEAT PUMP-THERMAL STORAGE BY OFF-PEAK ELECTRICITY

Yao Jianhua; Yan Huaizhe; Wang Lin; Zhao Yuetian; Shi Guohua

doi:10.19912/j.0254-0096.tynxb.2024-1043

PDF(2422 KB)

Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (10) : 476-486. DOI: 10.19912/j.0254-0096.tynxb.2024-1043

STUDY ON PERFORMANCE OF HEATING SYSTEM USING PV/T-HEAT PUMP-THERMAL STORAGE BY OFF-PEAK ELECTRICITY

Yao Jianhua¹, Yan Huaizhe¹, Wang Lin¹, Zhao Yuetian², Shi Guohua²

Author information +

History +

Abstract

Considering the demands of clean and efficient heating with grid peak shaving and valley filling, a novel building heating system combined with photovoltaic/thermal, heat pump and heat storage using off-peak electricity （PV/T-HP-VEHSH） was proposed. The optimization design method for PV/T-HP-VEHSH was developed targeting optimal heating reliability, minimal carbon emissions and initial investment based on the pattern search algorithm. The operating performance of PV/T-HP-VEHSH was studied by TRNSYS software and the performance improvement was also investigated in comparison with the photovoltaic-air source heat pump heating system and the heating system without thermal storage by off-peak electricity. The results show that the PV/T-HP-VEHSH has the optimal comprehensive benefits at the ratio of flow rate of the thermal collection water pump to PV/T area of 13.8 （kg/h）/m², the ratio of volume of thermal collecting tank to PV/T area of 0.1 m³/m², and the ratio of electric boiler capacity to volume of thermal storage tank of 1.2 kW/m³. The average monthly COP of PV/T-HP-VEHSH varies from 2.8 to 3.2 and the comprehensive photoelectric and photothermal efficiencies of PV/T are higher than 56% during the heating season in cold zones. The operation cost of PV/T-HP-VEHSH is reduced by 3.3 ¥/m² due to the thermal storage using off-peak electricity.

Key words

solar energy / heat pump systems / heating / thermal storage / Hook-Jeeves / control strategy

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Yao Jianhua, Yan Huaizhe, Wang Lin, Zhao Yuetian, Shi Guohua. STUDY ON PERFORMANCE OF HEATING SYSTEM USING PV/T-HEAT PUMP-THERMAL STORAGE BY OFF-PEAK ELECTRICITY[J]. Acta Energiae Solaris Sinica. 2025, 46(10): 476-486 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1043

References

[1] 中国建筑节能协会. 中国建筑能耗研究报告2020[J]. 建筑节能(中英文), 2021, 49(2): 1-6.
China Building Energy Conservation Association. China building energy consumption annual report 2020[J]. Journal of building energy efficiency, 2021, 49(2): 1-6.
[2] 李昌祖, 牛东晓, 张欣岩, 等. 基于改进的粒子群优化BP神经网络浙江电能替代潜力预测模型[J]. 科学技术与工程, 2020, 20(13): 5173-5179.
LI C Z, NIU D X, ZHANG X Y, et al.Zhejiang province electric power substitution potential prediction model based on improved particle swarm optimization BP neural network[J]. Science technology and engineering, 2020, 20(13): 5173-5179.
[3] 金满, 徐洪涛, 张剑飞, 等. 太阳能辅助地源热泵联合供暖系统模拟研究[J]. 上海理工大学学报, 2021, 43(2): 111-117.
JIN M, XU H T, ZHANG J F, et al.Numerical study on the combined heating system of a ground-source heat pump assisted by the solar energy[J]. Journal of University of Shanghai for Science and Technology, 2021, 43(2): 111-117.
[4] 杨先亮, 牛帅, 毛杭倩媛, 等. 基于光伏发电余热的地源热泵系统动态模拟分析[J]. 太阳能学报, 2021, 42(10): 341-348.
YANG X L, NIU S, MAO H Q Y, et al. Dynamic simulation analysis of ground source heat pump system based on photovoltaic power waste heat[J]. Acta energiae solaris sinica, 2021, 42(10): 341-348.
[5] ANDREW PUTRAYUDHA S, KANG E C, EVGUENIY E, et al.A study of photovoltaic/thermal(PVT)-ground source heat pump hybrid system by using fuzzy logic control[J]. Applied thermal engineering, 2015, 89: 578-586.
[6] 刘仙萍, 雷豫豪, 田东, 等. 夏热冬冷地区太阳能光伏/光热-地源热泵联合供热系统运行性能模拟[J]. 中南大学学报(自然科学版), 2021, 52(6): 1892-1900.
LIU X P, LEI Y H, TIAN D, et al.Numerical simulation for performance of solar photovoltaic/thermal-ground source heat pump hybrid heating system in hot summer and cold winter zone[J]. Journal of Central South University (science and technology), 2021, 52(6): 1892-1900.
[7] 俞准, 梁柯, 郭志勇, 等. 一种新型三水箱太阳能热水系统及控制策略[J]. 湖南大学学报(自然科学版), 2023, 50(5): 214-222.
YU Z, LIANG K, GUO Z Y, et al.A novel triple-tank solar water heating system and control strategy[J]. Journal of Hunan University (natural sciences), 2023, 50(5): 214-222.
[8] 冯国会, 李艾浓, 常莎莎, 等. 热泵谷电蓄热供暖系统设计匹配模式的研究[J]. 沈阳建筑大学学报(自然科学版), 2022, 38(4): 714-722.
FENG G H, LI A N, CHANG S S, et al.Study on the design and matching mode of heat pumpvalley electric storage heating system[J]. Journal of Shenyang Jianzhu University (natural science edition), 2022, 38(4): 714-722.
[9] QU M L, YAN X F, WANG H Y, et al.Energy, exergy, economic and environmental analysis of photovoltaic/thermal integrated water source heat pump water heater[J]. Renewable energy, 2022, 194: 1084-1097.
[10] MA J L, FUNG A S, BRANDS M, et al.Effects of photovoltaic/thermal (PV/T) control strategies on the performance of liquid-based PV/T assisted heat pump for space heating[J]. Renewable energy, 2021, 172: 753-764.
[11] 刘寒, 马小晶, 王宏伟, 等. 太阳能热泵联合风电蓄热供暖系统优化研究[J]. 太阳能学报, 2022, 43(10): 104-112.
LIU H, MA X J, WANG H W, et al.Optimization on solar heat pump combined with wind power thermal storage heating system[J]. Acta energiae solaris sinica, 2022, 43(10): 104-112.
[12] 赵学林. 太阳能光伏光热耦合热泵供热系统动态模拟与性能研究[D] . 北京: 华北电力大学, 2020.
ZHAO X L.Dynamic simulation and performance study of solar photovoltaic/thermal coupled heat pump heating system[D]. Beijing: North China Electric Power University, 2020.
[13] 张昕宇, 殷翀, 张磊, 等. 太阳能光伏光热组件(PV/T)性能评价方法研究[J]. 建筑科学, 2019, 35(12): 152-156.
ZHANG X Y, YIN C, ZHANG L, et al.Research on the method of evaluating the performance of photovoltaic/thermal unit[J]. Building science, 2019, 35(12): 152-156.
[14] GB 50364—2018, 民用建筑太阳能热水系统应用技术标准[S].
GB 50364—2018, Technical standard for solar water heating system of civil buildings[S].
[15] JGJ 26—2018, 严寒和寒冷地区居住建筑节能设计标准[S].
JGJ 26—2018, Design standard for energy efficiency of residential buildings in severe cold and cold zones[S].
[16] 刘涛. 基于TRNSYS的多源热电联产系统仿真模拟与性能分析 [D]. 青岛: 青岛大学, 2020.
LIU T.Simulation and performance analysis of multi-source cogeneration system based on TRNSYS[D]. Qingdao: Qingdao University, 2020.
[17] 单宝琦. 基于PV/T的多能互补供热系统性能研究[D]. 济南: 山东建筑大学, 2021.
SHAN B Q.Study on performance of multi-energycomplementary heating system based on PV/T[D]. Jinan: Shandong Jianzhu University, 2021.
[18] 张宁, 贺姝峒, 王军锋, 等. 碳交易背景下天津市电力行业碳排放强度与基准线[J]. 环境科学研究, 2018, 31(1): 187-193.
ZHANG N, HE S T, WANG J F, et al.Carbon intensity and benchmarking analysis of power industry in Tianjin under the context of cap-and-trade[J]. Research of environmental sciences, 2018, 31(1): 187-193.