Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43346
Title: Computational fluid dynamics (CFD) modelling of air flow field, mean age of air and CO2 distributions inside a bedroom with different heights of conditioned air supply outlet
Authors: Mao, B
Song, M
Chan, MY 
Dongmei, P
Deng, SM 
Keywords: Air change efficiency
CFD method
CO2 concentration
Height of supply air outlet
Mean age of air
Sleeping environments
Issue Date: 2016
Publisher: Pergamon Press
Source: Applied energy, 2016, v. 164, p. 906-915 How to cite?
Journal: Applied energy 
Abstract: It was revealed in a previous related study that for an air conditioning (A/C) system used in a sleeping environment, the height of its supply air outlet would significantly affect its ventilation performance in terms of effectiveness. To further examine the underlying reasons of the differences in ventilation performance, the air flow field, distributions of mean age of air, air change efficiency and distributions of CO2 concentrations inside an experimental bedroom were numerically studied using CFD method under five different settings, where its supply air outlet was positioned at 5 different heights. The study results suggested that positing a supply air outlet at a lower level was effective in both saving energy and removing the exhaled CO2 in a breathing zone, and when a supply outlet was positioned at a higher level, less CO2 was removed from the region near the mouth of a sleeper.
URI: http://hdl.handle.net/10397/43346
ISSN: 0306-2619
EISSN: 1872-9118
DOI: 10.1016/j.apenergy.2015.10.096
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