Field tests of centralized and decentralized ventilation units in residential buildings - Specific fan power, heat recovery efficiency, shortcuts and volume flow unbalances
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- 作者：Alexander Merzkirch ; alexander.merzkirch@uni.lu" class="auth_mail" title="E-mail the corresponding author ; Stefan Maas ; Frank Scholzen ; Daniele Waldmann
- 关键词：Mechanical ventilation ; Specific fan power ; Heat recovery ; Recirculation
- 刊名：Energy & Buildings
- 出版年：2016
- 出版时间：15 March 2016
- 年：2016
- 卷：116
- 期：Complete
- 页码：376-383
- 全文大小：1184 K
文摘
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Field tests with 20 centralized and 60 decentralized mechanical ventilation systems.
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High deviations between supply and exhaust of up to 60%.
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The mean total recirculation was 6.5% for centralized and 13% for decentralized devices.
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The specific fan power was measured with 0.475 Wh/m3 for centralized and 0.22 Wh/m3 for decentralized systems.
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The mean temperature change rate was 0.65 for centralized systems and 0.7 for decentralized systems.