Periodic Alternation between Intake and Exhaust of Air in Dynamic Insulation: Measurements of Heat and Moisture Recovery Efficiency

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• 作者：Sayaka Murata^a ; ^{s.murata@hro.or.jp" class="auth_mail" title="E-mail the corresponding author} ; Tsukasa Tsukidate^a ; Akira Fukushima^b ; Masaru Abuku^c ; Hirofumi Watanabe^d ; Akihiro Ogawa^d
• 关键词：Dynamic insulation ; Breathable inorganic concrete ; Heat recovery ; Ventilation ; Measurement
• 刊名：Energy Procedia
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：78
• 期：Complete
• 页码：531-536
• 全文大小：456 K

文摘

This paper reports experimentally determined heat and moisture recovery efficiencies of a newly developed dynamic insulation system, so called a “breathing dynamic insulation”. In this system, the outdoor air is drawn through half of walls made of breathable inorganic concrete (BIC), while the indoor air is exhausted through the other half. Intake and exhaust of air through the two halves of the walls are periodically alternated. It is shown that the BIC walls under study have recovery efficiencies of almost 90% for the heat in the exhaust air and 22 to 30% for the heat lost in conduction through the BIC walls within the range of an air flow rate of 10 to20 (m³/h)/m².