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Innovative building materials developed to enhance thermal mass significantly contribute to passive building design. This study examines building components and proposes an exterior wall incorporating transparent insulation material and bricks embedded with phase change material (PCM). The impact of this wall on building energy performance was analyzed under the climatic conditions of Ankara, Türkiye, which features continental climate characteristics. Granular aerogel was used as the transparent insulation material in the TIM-PCM wall, while five organic-based PCMs with different melting points (RT10HC, RT18HC, RT21HC, RT22HC, RT28HC) were selected. In the first phase, the appropriate PCM for the climate was determined using MATLAB-based simulations. In the second phase, experimental studies were conducted using test units with a volume of 1 m3. The southern wall of the test units was designed with bricks embedded with RT18HC and RT22HC in equal proportions and a transparent insulation unit filled with granular aerogel between two single glasses, incorporating a roller blind within the air gap. Temperature measurements were conducted under actual conditions. Simultaneous measurements were taken for both the standard and TIM-AG-PCM rooms for performance comparison. The impact of the TIM-AG-PCM wall on indoor temperature was evaluated based on average indoor temperature reduction (AITR) and thermal load leveling (TLL). Results indicated an average 10% lower AITR during the heating season and an average 5% higher AITR in the cooling season. The fluctuations in TLL in the TIM-AG-PCM room were attributed to heat loss and gain from the standard walls.

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Experimental Investigation of the Effect Of TIM-AG-PCM External Wall on Building Energy Performance

  • 会议论文

  • 发表日期：

    2026年

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  • Cansu Bekler,
  • İdil Ayçam,
  • Mustafa Zeki Yılmazoğlu,
  • Asena Soyluk

摘要

Innovative building materials developed to enhance thermal mass significantly contribute to passive building design. This study examines building components and proposes an exterior wall incorporating transparent insulation material and bricks embedded with phase change material (PCM). The impact of this wall on building energy performance was analyzed under the climatic conditions of Ankara, Türkiye, which features continental climate characteristics. Granular aerogel was used as the transparent insulation material in the TIM-PCM wall, while five organic-based PCMs with different melting points (RT10HC, RT18HC, RT21HC, RT22HC, RT28HC) were selected. In the first phase, the appropriate PCM for the climate was determined using MATLAB-based simulations. In the second phase, experimental studies were conducted using test units with a volume of 1 m3. The southern wall of the test units was designed with bricks embedded with RT18HC and RT22HC in equal proportions and a transparent insulation unit filled with granular aerogel between two single glasses, incorporating a roller blind within the air gap. Temperature measurements were conducted under actual conditions. Simultaneous measurements were taken for both the standard and TIM-AG-PCM rooms for performance comparison. The impact of the TIM-AG-PCM wall on indoor temperature was evaluated based on average indoor temperature reduction (AITR) and thermal load leveling (TLL). Results indicated an average 10% lower AITR during the heating season and an average 5% higher AITR in the cooling season. The fluctuations in TLL in the TIM-AG-PCM room were attributed to heat loss and gain from the standard walls.