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The motivation for the study analysed is the fact that photovoltaic systems applied to a building envelope limit their efficiency and durability due to insufficient cooling mechanisms. An extensive experimental campaign has been carried out in this research to identify the thermo-responsive interaction between the Phase Change Material (PCM) and the real outdoor conditions regarding the exploitation of its total latent heat. Accordingly, this contribution presents a comprehensive experimental study analysing several variants of facades incorporating PV modules enhanced with a microencapsulated PCM honeycomb structure. Using an outdoor test cell, four facade samples (three reference PV facades without PCM and one experimental facade with PCM) were subjected to long-term measurements in a south-facing orientation. The experimental data are used to determine the correct functioning of the latent thermal energy storage based on the PCM. The experimental results provide insight into the actual climatic behaviour of four PV facade constructions. The PCM layer behind the PV panels can reduce the peak PV operating temperature in the range of 9–13 K at vertical solar radiation of around 600 W/m2 and an ambient air temperature of 30 ℃ (summer). In addition, with vertical solar radiation of around 800 W/m2 and an ambient air temperature below 0 ℃ (winter), the peak PV operating temperature can be reduced up to 8 K. Through this approach, a real thermal response of facades has been obtained comprehensively.

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Outdoor Performance of a Photovoltaic Façade System Enhanced with Microencapsulated Phase Change Material Embedded in a Honeycomb Structure

  • 会议论文

  • 发表日期：

    2025年

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  • Jakub Čurpek,
  • Miroslav Čekon,
  • Richard Slávik,
  • Ladislav Kómar,
  • Peter Matiašovský

摘要

The motivation for the study analysed is the fact that photovoltaic systems applied to a building envelope limit their efficiency and durability due to insufficient cooling mechanisms. An extensive experimental campaign has been carried out in this research to identify the thermo-responsive interaction between the Phase Change Material (PCM) and the real outdoor conditions regarding the exploitation of its total latent heat. Accordingly, this contribution presents a comprehensive experimental study analysing several variants of facades incorporating PV modules enhanced with a microencapsulated PCM honeycomb structure. Using an outdoor test cell, four facade samples (three reference PV facades without PCM and one experimental facade with PCM) were subjected to long-term measurements in a south-facing orientation. The experimental data are used to determine the correct functioning of the latent thermal energy storage based on the PCM. The experimental results provide insight into the actual climatic behaviour of four PV facade constructions. The PCM layer behind the PV panels can reduce the peak PV operating temperature in the range of 9–13 K at vertical solar radiation of around 600 W/m2 and an ambient air temperature of 30 ℃ (summer). In addition, with vertical solar radiation of around 800 W/m2 and an ambient air temperature below 0 ℃ (winter), the peak PV operating temperature can be reduced up to 8 K. Through this approach, a real thermal response of facades has been obtained comprehensively.