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

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) m 3 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.

Numerical Study of Improving Solar Chimney Performance by using Energy Storage

“…al. (2020) [5] statistically explored the natural ventilation in twostory buildings using a vertical two-story SC passive system by using ANSYS fluent. The results showed that the long vertical SC might provide the optimum NV while also causing a visible rise in inside temperatures.…”