Component-based SHGC determination of BIPV glazing for product comparison

作者：Helen Rose Wilson, Tilmann E. Kuhn, Hisashi Ishii, Daniel Valencia-Caballero, Nuria Martín-Chivelet, Jinqing Peng, Rebecca Yang, Yukun Zang, Hua Ge, Kai Ye, Jacob C. Jonsson, Konstantinos Kapsis · 发表于：Energy and Buildings · 年份：2024 · DOI：10.1016/j.enbuild.2024.114592 · 被引用次数：11 · 研究领域：Building Energy and Comfort Optimization、Solar Thermal and Photovoltaic Systems、Photovoltaic System Optimization Techniques

Building-integrated photovoltaic (BIPV) systems are intrinsically designed to generate electricity and to provide at least one building-related function. When BIPV modules act as glazing products in windows, skylights or curtain walls, their ability to control the transmission of solar energy into the building must be characterised by a Solar Heat Gain Coefficient (SHGC) or g value (also known as Total Solar Energy Transmittance – TSET – or “solar factor”). For the comparison of BIPV glazing products consisting of one PV laminate and possibly further, conventional glazing layers separated by gas-filled cavities, the procedures documented in international standards for architectural glazing (e.g. ISO 9050 and EN 410) form a suitable starting point. Easily implemented modifications to these procedures are proposed to take both optical inhomogeneity (if relevant) and extraction of electricity from BIPV glazing units into account. Geometrically complex glazing and shading devices, and light-scattering glazing layers, are outside the scope of the proposed methodology; SHGC determination for obliquely incident solar radiation is also excluded. For these cases, the experimental calorimetric approach documented in [ISO 19467:2017; ISO 19467-2:2021] is recommended. The paper also presents results and conclusions from an implementation exercise and sensitivity study carried out by participants of the IEA-PVPS Task 15 on BIPV. The cell coverage ratio in the PV laminate, the thermal resi...