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Indoor and Built Environment, Vol. 12, No. 4, 281-291 (2003)
DOI: 10.1177/1420326X03035918

Floor-Supply Displacement Ventilation in a Small Office

Nobukazu Kobayashi

Building Technology Program, Massachusetts Institute of Technology

Qingyan Chen

Ray W. Herrick Laboratories, School of Mechanical Engineering, Purdue University, 585 Purdue Mall, West Lafayette, Indiana 47907-2088, USA, yanchen{at}purdue.edu

This paper presents a study of the performance of a floor-supply displacement ventilation system using computational fluid dynamics (CFD). The experiment was carried out in a full-scale environmental chamber with a floor-supply system to obtain reliable flow information for the validation of a CFD program. The validated program was used further to evaluate the performance of the floor-supply displacement ventilation system with different air change rates, diffuser numbers, furniture arrangement, and cooling loads. The evaluation criteria are thermal comfort level and indoor air quality.

Key Words: Displacement ventilation • Computational fluid dynamics • Experimental measurements • Floor supply • Indoor air quality • Thermal comfort


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