The effect of location of a convective heat source on displacement ventilation: CFD study

被引：55

作者：

Park, HJ ^{[1
]}

Holland, D ^{[1
]}

机构：

[1] Dunham Associates Inc, Adv Technol Grp, Minneapolis, MN 55437 USA

来源：

BUILDING AND ENVIRONMENT | 2001年 / 36卷 / 07期

关键词：

air flow; CFD; displacement ventilation; stratification; temperature distribution; plume; convection;

D O I：

10.1016/S0360-1323(01)00014-2

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Two-dimensional computational simulations are performed to examine the effect of vertical location of a convective heal source on thermal displacement ventilation systems. In this study, a heat source is modeled with seven different heights from the floor (0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0 m) in a displacement ventilation environment. The flow and temperature fields in thermal displacement ventilation systems vary depending on the location of the heat source. As the heat source rises, the convective heat gain from the hear source to an occupied zone becomes less significant. This effect changes the temperature field and results in the reduction of the cooling load in the occupied zone. The stratification level is also affected by the heat source location at a given flow rate. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：883 / 889

页数：7