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authors Malkawi, Ali and Jabi, Wassim
year 1996
title Integrating Shadow Casting Methodology and Thermal Simulation
source Proceedings of the Solar 96 Conference. Asheville, North Carolina: American Solar Energy Society, 1996, pp. 271-276
summary This paper describes an experiment that integrates shadow casting methodology and thermal simulation algorithms developed by the authors. The 3D shadow procedures use a polyhedral representation of solids within a Cartesian space that allows for accurate casting of shadows. The algorithm is also capable of calculating surface areas of polygonal shadows of any arbitrary shape and size. The thermal simulation algorithms using the Transfer Function Method (TFM) incorporate the shaded area calculations to better predict solar heat gain from glazing based on transmitted, absorbed, and conducted cooling loads. The paper describes the use of a 3D computer model to illustrate the impact of the pattern and area of shading on the visual and thermal properties of building apertures. The paper discusses the objectives of this experiment, the algorithms used, and their integration. Conclusions and findings are drawn.
keywords Shadow Casting Algorithms Energey Thermal Simulation
series other
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