Multi-objective optimization of a hybrid PVT assisted ground source and air source heat pump system for large space buildings using transient metamodel

IF 9 1区工程技术 Q1 ENERGY & FUELS

Energy Pub Date : 2025-05-10 DOI:10.1016/j.energy.2025.136473

Naihua Yue , Lingling Li , Congbao Xu

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引用次数: 0

Abstract

The ground source heat pump (GSHP) system is widely employed as a clean, efficient and economical renewable energy technology for HVAC and hot water supply. In cold zone of China, however, the building heating load is much larger than that of cooling load, which may cause significant soil temperature drop and GSHP performance deterioration. To solve this problem, a novel PVT assisted GSHP and ASHP system (PVT-GA) for gymnasium was proposed in this research. Using transient FEDformer as metamodel, NSGAII was employed for multi-objective optimization of grid power consumption, CO₂ emission, and LCC. Six systems with different configuration were compared. Results show that the optimal PVT-GA system has best performance. Compared with the original system, it reduces the grid power requirement by 70.80 %, CO₂ emission by 70.53 %, and LCC by 54.57 %. The system also could improve the PV array power generated efficiency by 14.81 %. Furthermore, the average soil temperature of PVT-GA system could stable at 15.88 °C, and the COP of GSHP and whole system also could keep stable at a high level with 5.365 kW/kW and 6.296 kW/kW. This research offers a solution to soil thermal imbalance problem in GSHP system and efficiency attenuation issue of PV caused by overheating.

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基于瞬态元模型的混合PVT辅助地源和空气源热泵系统多目标优化

地源热泵系统作为一种清洁、高效、经济的可再生能源技术被广泛应用于暖通空调和热水供应。然而，在中国寒区，建筑热负荷远大于冷负荷，这可能导致土壤温度明显下降，地源热泵性能恶化。为了解决这一问题，本研究提出了一种新的体育馆PVT辅助地源热泵和空气源热泵系统（PVT- ga）。以暂态馈变换器为元模型，采用NSGAII对电网功耗、CO2排放和LCC进行多目标优化。对6种不同结构的系统进行了比较。结果表明，最优PVT-GA系统具有最佳性能。与原系统相比，电网需电量降低70.80%，二氧化碳排放量降低70.53%，LCC降低54.57%。该系统还可以将光伏阵列的发电效率提高14.81%。PVT-GA系统的平均土壤温度稳定在15.88℃，地源热泵和整个系统的COP稳定在5.365 kW/kW和6.296 kW/kW的较高水平。本研究解决了地源热泵系统土壤热平衡问题和光伏系统过热引起的效率衰减问题。

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来源期刊

Energy 工程技术-能源与燃料

CiteScore

15.30

自引率

14.40%

发文量

审稿时长

14.2 weeks

期刊介绍： Energy is a multidisciplinary, international journal that publishes research and analysis in the field of energy engineering. Our aim is to become a leading peer-reviewed platform and a trusted source of information for energy-related topics. The journal covers a range of areas including mechanical engineering, thermal sciences, and energy analysis. We are particularly interested in research on energy modelling, prediction, integrated energy systems, planning, and management. Additionally, we welcome papers on energy conservation, efficiency, biomass and bioenergy, renewable energy, electricity supply and demand, energy storage, buildings, and economic and policy issues. These topics should align with our broader multidisciplinary focus.