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TECHNICAL BRIEFS

Calculation of the Shape Factor From a Small Rectangular Plane to a Triangular Surface Perpendicular to the Rectangular Plane Without a Common Edge

[+] Author and Article Information
H. L. Noboa, D. O’Neal, W. D. Turner

Mechanical Engineering Department, Texas A&M University, College Station, TX 77843

J. Sol. Energy Eng 115(2), 117-119 (May 01, 1993) (3 pages) doi:10.1115/1.2930029 History: Received September 01, 1992; Revised January 01, 1993; Online June 06, 2008

Abstract

In developing an analytical model of radiative heat transfer inside attics, the necessity of calculating the shape factor from a small rectangle to a triangular plane may arise. This paper describes a methodology of calculation for such a shape factor from simple relations using shape-factor algebra. The shape factor is calculated using a mirror image of the triangular surface, in such a way that the small rectangular plane is positioned symmetrical between the two triangular surfaces. Numerical results are presented in graphical form.

Copyright © 1993 by The American Society of Mechanical Engineers
Topics: Shapes
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