Long time dynamic simulation of a Solar Chimney under the Uruguayan climate

Abstract

The present work aims to evaluate the performance of a solar chimney under Uruguayan climate. A simplified numerical model was proposed, so long time simulations can be run with adequate precision and low computational costs. Special attention has been paid to friction losses determination, due to its relevance in mass flow calculation. Different flow regimens in the solar chimney channel were analyzed, and a strategy was proposed to estimate velocity profiles. The presented model has been verified and validated using both theoretical and experimental results. Furthermore, the developed model was used to evaluate the ability of a Solar Chimney to improve comfort conditions in a building under Uruguayan climate.