Experimental Study on Indoor Thermal Stratification in Large Space by under Floor Air Distribution System (UFAD) in Summer
Xin Wang, Chen Huang, Weiwu Cao, Xuelei Gao, Wen Liu
DOI: 10.4236/eng.2011.34044   PDF    HTML     6,567 Downloads   11,446 Views   Citations


A ventilation method of down-supply up-return has grown popular in large space in recent years for comfort ventilation with low thermal load, especially in China, including gymnasium, factory space, and exhibition hall, etc. The undisturbed flow pattern in the space gives a gradient in temperature, and the vertical thermal stratification appears markedly in large space. The object for this paper is to understand the behaviour of an under floor air distribution system in a ventilated space. The thermal stratification characteristics in a real UFAD experimental space were measured. The effects of different supply conditions on the thermal stratification characteristics are investigated based on the experimental results. The relations between space air stratification and the control parameter is predicted. It can be indicated that there are 4 zones composing the vertical thermal stratification. And different zone has different control parameter.

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X. Wang, C. Huang, W. Cao, X. Gao and W. Liu, "Experimental Study on Indoor Thermal Stratification in Large Space by under Floor Air Distribution System (UFAD) in Summer," Engineering, Vol. 3 No. 4, 2011, pp. 384-388. doi: 10.4236/eng.2011.34044.

Conflicts of Interest

The authors declare no conflicts of interest.


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