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Effect of supply air temperature on air distribution in a room with radiant heating and mechanical ventilation

  • Xiaozhou Wu
  • , Lei Fang
  • , Bjarne W. Olesen
  • , Jianing Zhao
  • , Fenghao Wang
  • Xi'an Jiaotong University
  • Technical University of Denmark
  • Harbin Institute of Technology

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The present study focused on the effect of supply air temperature on air distribution in a room with floor heating (FH) or ceiling heating (CH) and mixing ventilation (MV) or displacement ventilation (DV). The vertical distribution of air temperature and velocity in the occupied zone and the horizontal distribution of containment concentration in the breathing zone were measured as the supply air temperature ranged from 15.0°C(59°F) to l9.0°C(66.2°F). The results showed that the vertical air temperature differences were less than 0.3°C (32.5°F) with FH+MV or CH+MV and between 1.9°C (35.4°F) and 4.2°C (39.6°F) with FH+DVor CH+DV. The turbulence intensity variedfrom 12.5% to 15.5% with FH+MV or CH+MV and from 6.0% to 10.8% with FH+D Vor CH+D V. The air-distribution effectiveness was close to 1.0 with FH+MV or CH+MV and between 1.06 and 1.16 with FH+DV or CH+D V. The results in this paper are relevant to the design and control of the hybrid systems with radiant heating systems and mechanical ventilation systems.

源语言英语
主期刊名ASHRAE Transactions
出版商American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)
120-128
页数9
ISBN(电子版)9781939200655
出版状态已出版 - 2017
活动2017 ASHRAE Winter Conference - Las Vegas, 美国
期限: 28 1月 20171 2月 2017

丛书

姓名ASHRAE Transactions
123
ISSN(印刷版)0001-2505

会议

会议2017 ASHRAE Winter Conference
国家/地区美国
Las Vegas
时期28/01/171/02/17

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