Experimental investigation of the energy performance of a photovoltaic-thermal assisted ground source heat pump system for net plus energy houses

IF 6.4 2区工程技术 Q1 THERMODYNAMICS Case Studies in Thermal Engineering Pub Date : 2025-03-02 DOI:10.1016/j.csite.2025.105974

Won-Jong Choi , Wangje Lee , Deuk-Won Kim , Youngsub An , Hong-Jin Joo , Joo Young Hong , Min-Hwi Kim

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Abstract

This study investigates the experimental analysis of the energy saving potential of integrating a photovoltaic-thermal (PVT) assisted ground source heat pump system under heating season operation. The demonstration building is an energy plus solar house located in Daejeon, South Korea. The coefficient of performance (COP) was measured during heating and domestic hot water operations to compare the energy supply efficiency of the proposed system and conventional systems. The results showed that the COP of the heat pump system was observed 4.5 for heating and 3.9 for domestic hot water. The ground source operation achieved COPs of 4.6 for heating and 4.4 for domestic hot water, while the PVT assisted ground source operation achieved COPs of 5.2 for heating and 4.4 for domestic hot water. The electrical and thermal utilization ratio of the PVT system were 7.5 %–21.2 % during the heating season. The seasonal performance factor and seasonal performance factor in grid of the proposed system showed 4.9 and 5.3, respectively. The experimental results confirmed that the PVT assisted ground source heat pump system is more energy-efficient with reducing carbon emissions compared to conventional systems.

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净+能源住宅光伏热辅助地源热泵系统能源性能的实验研究

本文研究了在采暖季运行下集成光伏热（PVT）辅助地源热泵系统的节能潜力。该示范建筑是位于韩国大田的能源加太阳能住宅。在供暖和生活热水运行期间测量了性能系数（COP），以比较所提出系统和常规系统的能源供应效率。结果表明：供热热泵系统COP为4.5，生活热水系统COP为3.9。地源运行供暖的cop为4.6，生活热水的cop为4.4，PVT辅助地源运行供暖的cop为5.2，生活热水的cop为4.4。采暖季PVT系统的电、热利用率为7.5% ~ 21.2%。该系统的季节性能因子为4.9，网格中的季节性能因子为5.3。实验结果证实，与传统系统相比，PVT辅助地源热泵系统具有更高的能源效率，减少了碳排放。

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来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.