Studying comfort in a room with cold air system using computational fluid dynamics

被引：6

作者：

Youssef, Ahmed A. ^{[1
]}

Mina, Ehab M. ^{[1
]}

ElBaz, Ahmed R. ^{[1
]}

AbdelMessih, Raouf N. ^{[1
]}

机构：

[1] Ain Shams Univ, Fac Engn, Mech Power Engn, Cairo, Egypt

来源：

AIN SHAMS ENGINEERING JOURNAL | 2018年 / 9卷 / 04期

关键词：

Cold air system; CFD; Comfort; ADPI; THERMAL COMFORT;

D O I：

10.1016/j.asej.2016.07.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cold air system has proven to offer economic and environmental benefits. However, these systems did not spread because of the fear from cold draft formation leading to unaccepted indoor conditions. In this paper, Computational Fluid Dynamics (CFD) was used to evaluate the performance of cold air system inside a 2D space. The flow of cold air was studied at different supply temperatures, velocities, and room thermal loads. The velocity field and the temperature distribution were used to calculate the effective draft temperature. And hence, the comfort level was assessed using the Air Diffusion Performance Index, ADPI. The effect of each factor was studied independently at different loads. It was shown that reduction in supply temperature and velocity each causes limited enhancement on the ADPI. The main source of drafts was the heat flux from the floor. The velocities induced by the floor heat flux were sometimes higher than the jet velocity. (C) 2016 Ain Shams University.

引用

页码：1753 / 1762

页数：10

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