Analysis on the Influence on Heating and Cooling Loads according to PV Panel Installation Conditions

In-Seo Jeong; Sang-Hoon Park

doi:10.7836/kses.2026.46.3.001

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2026 Vol.46, Issue 3 Next Page

Analysis on the Influence on Heating and Cooling Loads according to PV Panel Installation Conditions 태양광 시스템 설치 조건에 따른 하부 음영이 냉난방 부하에 미치는 영향 분석

30 June 2026. pp. 1-12

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Abstract

Installing photovoltaic (PV) systems on rooftops generates shading beneath the panels, which affects the building’s heating and cooling loads. However, previous studies on PV systems have focused predominantly on power generation. Therefore, it is necessary to analyze the impact of shading caused by the PV installation conditions on the heating and cooling loads. In this study, simulations were performed on an educational building in Incheon to analyze how shading, determined by PV installation conditions, affects both loads. The results indicated an inverse relationship between the cooling load and the shading factor, whereas the heating load exhibited no significant correlation. A detailed analysis of the installation conditions revealed that lower panel heights led to greater reductions in the cooling load. Regarding the tilt angle, the cooling load decreased in the low-angle range but increased again as the tilt angle increased. This trend was attributed to the rapid decline in solar altitude during August and September. Furthermore, analyzing these cooling load variations in terms of building energy performance confirmed that the cooling load reduction from shading contributed approximately 5.1%–6.5% to the overall improvement in building energy efficiency. These findings suggest that the cooling load reduction effect can serve as an effective design strategy for meeting Zero Energy Building (ZEB) standards, particularly under site conditions where securing optimal power generation efficiency is restricted.

Keywords

Photovoltaic system

Shading

Installation conditions

Building energy performance

키워드

태양광 시스템

냉난방 부하

음영

설치 조건

건물 에너지 성능

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Information

Publisher :Korean Solar Energy Society
Publisher(Ko) :한국태양에너지학회
Journal Title :Journal of the Korean Solar Energy Society
Journal Title(Ko) :한국태양에너지학회 논문집
Volume : 46
No :3
Pages :1-12
Received Date : 2026-04-06
Revised Date : 2026-04-27
Accepted Date : 2026-05-08
DOI :https://doi.org/10.7836/kses.2026.46.3.001

Journal of the Korean Solar Energy Society ISSN:1598-6411(Print) 2508-3562(Online) 한국태양에너지학회 논문집

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