TY - JOUR
T1 - Evaluation of different air distribution systems for sleeping spaces in transport vehicles
AU - Zhang, Yue
AU - Li, Jiayu
AU - Sun, Hejiang
AU - Liu, Junjie
AU - Chen, Qingyan
N1 - Funding Information:
Funding: this research was supported by a faculty research grant of Yonsei University College of Medicine (6-2019- 0184) and a grant from the Korea Health Technology R&D Project through the Korea Health Industry Development Institute, funded by the Ministry of Health and Welfare, Republic of Korea (HI14C1324). Competing interests: none declared.
Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/12/1
Y1 - 2015/12/1
N2 - Air distribution in the sleeping space of a transport vehicle is important for sleep quality, especially during a long journey. In order to design a thermally comfortable sleeping space with fresher air, this investigation used a verified computational fluid dynamics (CFD) method to obtain the distributions of air velocity, air temperature, and CO2 concentration in the sleeping space with displacement, personalized, and mixing ventilation systems. This study used the facial-area speed ratio, mean age of air, and draft risk obtained by CFD to evaluate the air distribution effectiveness. The results showed that the performance of the personalized ventilation system was better than that of the displacement and mixing ventilation systems because it provided superior thermal comfort and higher air quality. The distributions of air velocity, air temperature, and contaminant concentration computed by CFD were validated with corresponding experimental data obtained in a full-scale test rig.
AB - Air distribution in the sleeping space of a transport vehicle is important for sleep quality, especially during a long journey. In order to design a thermally comfortable sleeping space with fresher air, this investigation used a verified computational fluid dynamics (CFD) method to obtain the distributions of air velocity, air temperature, and CO2 concentration in the sleeping space with displacement, personalized, and mixing ventilation systems. This study used the facial-area speed ratio, mean age of air, and draft risk obtained by CFD to evaluate the air distribution effectiveness. The results showed that the performance of the personalized ventilation system was better than that of the displacement and mixing ventilation systems because it provided superior thermal comfort and higher air quality. The distributions of air velocity, air temperature, and contaminant concentration computed by CFD were validated with corresponding experimental data obtained in a full-scale test rig.
KW - Air quality
KW - CFD
KW - Displacement ventilation
KW - Mixing ventilation
KW - Personalized ventilation
KW - Sleeping space
KW - Thermal comfort
UR - http://www.scopus.com/inward/record.url?scp=84946828465&partnerID=8YFLogxK
U2 - 10.1016/j.buildenv.2015.11.004
DO - 10.1016/j.buildenv.2015.11.004
M3 - Journal article
AN - SCOPUS:84946828465
SN - 0360-1323
VL - 94
SP - 665
EP - 675
JO - Building and Environment
JF - Building and Environment
ER -