Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Assessment Age of Air and Thermal Comfort in a Classroom by Adopting Displacement Ventilation with Chilled Ceiling System
This study aims to investigate the effect of the cooling load ratio covered by the chilled ceiling on the age of air and comfort level in a classroom at the hot and dry climate in Iraq-Hilla city. Air age, air exchange efficiency, and concentrations of pollutants in a classroom are investigated numerically by used AIRPAK software under displacement ventilation combined with a chilled ceiling system. Four cases are studied at different values of the cooling load covered by chilled ceiling (0%, 25%, 50%, 80%) respect to total classroom cooling load. Cooling load removes by chilled ceiling varied from (0 to 84.5 W/m2) based on the classroom area, and its temperature varied between (17.5-22.5oC). The displacement ventilation airflow rate was kept at 0.3m3/s, and the air temperature supply varied between (19.5-24.5oC) depend on the amount of cooling load covered by displacement ventilation. The results showed that the mean local air age increasing with height. The room mean air age increase and air exchange efficiency reduce with increasing load portion, which treated by the chilled ceiling . Increasing the portion of the load treated by chilled ceiling tends to improve comfort levels.
Assessment Age of Air and Thermal Comfort in a Classroom by Adopting Displacement Ventilation with Chilled Ceiling System
This study aims to investigate the effect of the cooling load ratio covered by the chilled ceiling on the age of air and comfort level in a classroom at the hot and dry climate in Iraq-Hilla city. Air age, air exchange efficiency, and concentrations of pollutants in a classroom are investigated numerically by used AIRPAK software under displacement ventilation combined with a chilled ceiling system. Four cases are studied at different values of the cooling load covered by chilled ceiling (0%, 25%, 50%, 80%) respect to total classroom cooling load. Cooling load removes by chilled ceiling varied from (0 to 84.5 W/m2) based on the classroom area, and its temperature varied between (17.5-22.5oC). The displacement ventilation airflow rate was kept at 0.3m3/s, and the air temperature supply varied between (19.5-24.5oC) depend on the amount of cooling load covered by displacement ventilation. The results showed that the mean local air age increasing with height. The room mean air age increase and air exchange efficiency reduce with increasing load portion, which treated by the chilled ceiling . Increasing the portion of the load treated by chilled ceiling tends to improve comfort levels.
Assessment Age of Air and Thermal Comfort in a Classroom by Adopting Displacement Ventilation with Chilled Ceiling System
Conference, ICRIE (Autor:in) / Shbeeb, Ali Aedan (Autor:in) / Mahdi , Ala'a Abbas (Autor:in) / Hussein , Ahmed Kadhim (Autor:in)
22.08.2021
doi:10.36909/jer.v9iICRIE.11679
Journal of Engineering Research; Vol 9 No ICRIE (2021): Journal of Engineering Research-ICRIE Special Issue ; 2307-1885 ; 2307-1877 ; 10.36909/jer.v9iICRIE
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC:
690
Designing for Thermal Comfort in Combined Chilled Ceiling/Displacement Ventilation Environments
| British Library Conference Proceedings | 1998
Designing for Thermal Comfort in Combined Chilled Ceiling/Displacement Ventilation Environments
| British Library Online Contents | 1998
| British Library Conference Proceedings | 1997