Study of Ventilation Character for an UFAD Room with Cooling Wall

Xiao Hua Li; Dao Guang Lin

doi:10.4028/www.scientific.net/AMM.137.275

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 137Study of Ventilation Character for an UFAD Room...

Study of Ventilation Character for an UFAD Room with Cooling Wall

Abstract:

This study mainly investigated the wall temperature affects on the ventilation performance of the UFAD system with multi-zone mode simulation and experiment methods. A room which has dimensions 4.4×2.7×2.5m and consists of a single source of heat and a cooling wall was developed. Laboratory experiments were carried out to measure the air temperature distribution of the main space and the cooling boundary layer under three cases. From the model simulated and the experimental results it is obvious that the stratification in the room disappears as the temperature of the cooling wall decreases, the downdraught generated by the cooling wall reverses with the main zone airflow. The conclusions can provide the guidance on designing the UFAD systems.

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Periodical:

Applied Mechanics and Materials (Volume 137)

Pages:

275-279

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.137.275

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Online since:

October 2011

Authors:

Xiao Hua Li, Dao Guang Lin

Keywords:

Cooling Wall, Downdraught, Multi-Zone Model, Temperature Distribution, UFAD System

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