Energy savings of a hybrid reversible ventilation system in a basement parking structure

Kong, Kok-Haw and Chong, Wen Tong and Koh, Voon Li (2020) Energy savings of a hybrid reversible ventilation system in a basement parking structure. Journal of the Chinese Society of Mechanical Engineers, 41 (1). pp. 99-105. ISSN 0257-9731,

Full text not available from this repository.


Urbanization stimulates many large developments. Utilizing the underground space for vehicle storage has become the de facto practice to overcome the high cost of super-high-rise buildings. Underground space requires an efficient mechanical ventilation system for its day-to-day operation as well as in the case of a fire emergency. These two ventilation requirements are often combined into one hybrid ventilation system. The conventional ventilation system in a basement parking structure involves the installation of a full extension of ductwork to prevent pockets of stale air. This paper introduces a semi-ducted reversible ventilation system. In this reversible concept, fans in the fire zone operate as exhaust. whereas fans at the opposing zone operate as supply. The performance of both ventilation systems was investigated in a rectangular basement parking structure. Results based on CFD simulations showed that the semi-ducted ventilation system outperformed the conventional ventilation system in the event of fire emergency. Site measurement showed that the CO level was kept at below 10 parts-per-million in the normal operating mode. The amount of ductwork in the semi-ducted system reduced by approximately 60%, and the fan static pressure reduced by 33%. Hence, an overall energy savings of 45.6% was achieved.

Item Type: Article
Funders: Leong Poon & Assoc (M) Sdn Bhd
Uncontrolled Keywords: Fire safety engineering; CFD simulation; Energy savings; Basement parking structure; Mechanical ventilation
Subjects: T Technology > TH Building construction
Divisions: Faculty of Engineering > Department of Mechanical Engineering
Depositing User: Ms Zaharah Ramly
Date Deposited: 25 Oct 2023 09:38
Last Modified: 25 Oct 2023 09:38

Actions (login required)

View Item View Item