A simplified model of heat transfer at an indoor window glazing surface with a Venetian blind

作者：Roeleveld Derek^*; Naylor David; Oosthuizen Pat

来源：Journal of Building Performance Simulation, 2010, 3(2): 121-128.

DOI：10.1080/19401490903528147

• window
• fenestration
• Venetian blinds
• heat transfer
• modelling

In this article, a simplified model is developed to predict the radiative and convective heat transfer in a complex fenestration system consisting of a Venetian blind located adjacent to an indoor window glazing. Empirical correlations for natural convection in an asymmetrically heated channel and an isolated flat plate are used in this one-dimensional simplified model. In this simplified model, an energy balance is performed at the blind surface using a mean blind temperature. The radiative heat exchange between the blind, window and room is calculated using a four surface grey-diffuse model, which is coupled to the convective heat transfer. The simplified model has been developed using experimental and numerical data from the literature. Sample results are presented that illustrate the effect of blind slat angle, blind-to-window spacing and absorbed solar heat flux on the heat transfer at the window surface.

• 出版日期2010