文献类型：期刊文献

英文题名：Multi-mode ventilation: An efficient ventilation strategy for changeable scenarios and energy saving

作者：Shao, Xiaoliang[1];Li, Xianting[2];Ma, Xiaojun[3];Liang, Chao[2]

第一作者：Shao, Xiaoliang

通讯作者：Li, XT[1]

机构：[1]Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China;[2]Tsinghua Univ, Sch Architecture, Dept Bldg Sci, Beijing 100084, Peoples R China;[3]Beijing Union Univ, Coll Biochem Engn, Beijing 100023, Peoples R China

第一机构：Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China

通讯机构：[1]corresponding author), Tsinghua Univ, Sch Architecture, Dept Bldg Sci, Beijing 100084, Peoples R China.

年份：2017

卷号：115

起止页码：332-344

外文期刊名：BUILDING AND ENVIRONMENT

收录：;EI(收录号：20170703345452);Scopus(收录号：2-s2.0-85012049339);WOS:【SCI-EXPANDED(收录号:WOS:000397363000027)】；

基金：This study is supported by the National Natural Science Foundation of China (Grant No. 51508299, 51578065 and 51478468), Fundamental Research Funds for the Central Universities (Grant No. FRF-TP-16-006A1), China Postdoctoral Science Special Foundation (Grant No. 2015T80092) and the State Sports General Administration Foundation of Key Research Field (Grant No. 2014B095).

语种：英文

外文关键词：Ventilation; Airflow pattern; Non-uniform environment; Control strategy; Building energy efficiency

摘要：The advanced air distribution methods such as displacement ventilation and personalized ventilation attempt to seek a balance between better indoor air environment and energy efficiency. However, multiple demand scenarios including variable locations of occupants and indoor sources may exist in daily operation of the ventilation system. Most of existing airflow patterns are single mode and cannot always be efficient when responding to changeable scenarios. In this paper, a novel ventilation strategy, i.e., multi-mode ventilation (MMV), is proposed to address multiple scenarios. MMV is designed by the combination of several single airflow patterns and aims to utilize the individual advantages of each airflow pattern in controlling specific scenarios. The energy saving potential of MMV is demonstrated by numerical studies of a meeting room. An indexed local cooling load (LCL) is adopted to evaluate the performance of airflow patterns. As a key parameter in LCL calculation, the required supply temperature to maintain the set temperature at the target zone is determined by computational fluid dynamics (CFD) method. The results show that each single airflow pattern can only be efficient for part of 8 scenarios. MMV performs better by combining single airflow patterns 1 and 2 regardless of the changes of the location and magnitude of the occupied zone as well as the location of the heat source. MMV achieves a reduction rate of up to 56.8% in cooling load compared with airflow pattern 4. MMV may provide a reference for real projects in controlling temperature, humidity and contaminant concentration under changeable scenarios. (C) 2017 Elsevier Ltd. All rights reserved.