Comparative study of the cooling energy performance of variable refrigerant flow systems and variable air volume systems in office buildings

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• 作者：Xinqiao Yu^a ; Da Yan^a ; ^{yanda@tsinghua.edu.cn} ; Kaiyu Sun^b ; Tianzhen Hong^b ; Dandan Zhu^c
• 关键词：Variable refrigerant flow (VRF) systems ; Variable air volume (VAV) systems ; Field measurement ; Building simulation ; Energy performance ; Comparative analysis
• 刊名：Applied Energy
• 出版年：2016
• 出版时间：1 December 2016
• 年：2016
• 卷：183
• 期：Complete
• 页码：725-736
• 全文大小：1998 K
• 卷排序：183

文摘

We compared energy use of VRF and VAV systems for office buildings in China. We use field measurement, survey and simulation to analyze influencing factors. VRF consumed much less energy than VAV mainly due to different operation modes. VRF systems operate in part-time-part-space mode enabling flexible personal control. VAV systems operate in full-time-full-space mode leading to longer operation hours.