Natural Ventilation in Passive System of Vertical Two-Stores Solar Chimney

Hussein J. Mohammed; Abbas J. Jubear; Haddi Obaid

Authors

Hussein J. Mohammed Department of Mechanical Engineering, Wasit University, Kut, Iraq
Abbas J. Jubear Department of Mechanical Engineering, Wasit University, Kut, Iraq
Haddi Obaid Department of Mechanical Engineering, Wasit University, Kut, Iraq

Keywords:

Two stores solar chimney, Thermal performance, Natural ventilation, CFD, ACH

Abstract

The present work includes a numerical study that investigated in a thermal performance of the passive system of a vertical two stores solar chimney. A several models of a vertical solar chimneys were designed, by using the solid work 18 software, that then brought to the Ansys Fluent 18.2 software for simulation, under (Al-Kut, Iraq) city climatic conditions on the hot summer day of (5-8-2018). This simulation was comprised of a five testing models of a two stores solar chimney that oriented to the south and equipped with a wooden two stores facility building that having the size of (1 * 1 * 1) m3 for each store. The testing models includes a vertical and long vertical solar chimney, with two different positions of (lower and upper) inlet holes. The testing was aimed to choosing the perfect model that could giving a suitable thermal performance under a various value of solar intensities and ambient temperatures during a constant interval of the daylight times. The results proved that the long vertical solar chimney was able to providing a best natural ventilation but with visible rising into the indoor temperatures.