Paper Conference

Proceedings of ASim Conference 2012: 1st Asia conference of IBPSA-China, Japan, Korea


According to the location of trombe wall openings thermal impact on the environment

Sang wan Kim, Jang hoo Seo

Abstract: In this study, the night time indoor air flow and heat transfer of building with trombe wall system were examined using CFD (Computational Fluid Dynamics). The space of analysis was in the closed state with no ventilation form the outside, and it was set to have natural convection for buoyancy resulted from temperature difference. As a result, this research observed the air in a relatively higher position flowing into the intermediate space where the temperature was getting decreased through the upper opening due to the characteristics of heat transfer, heat loss through the window, and the form of convection that the air of lower temperature flowed in. Also, according to the result of the analysis by applying the vertical distance of the opening differently, as the distance from the opening was closer, flux and heat loss through the glass became reduced, and the air flowing in showed low temperature departure; however, when it was too close, heat transfer resulted from convection was so subtle that it was not very effective. And as the distance from the opening became farther, the air flowing along the trombe wall showed a high mass flow rate for the buoyancy, and the convection became rather higher; however, heat loss through the window within the intermediate space grew more, it was not advantageous in terms of thermal utility on account of temperature reduction in air passing through the opening.
Pages: 674 - 679