Abstract

A mathematical model for calculating precisely the effective emissivity distribution ∊_a of a diffuse cylindro-inner-cone with a plane specular lid is presented. The exchange factors that comprise the kernels of the integral equations for evaluating ∊_a have been derived using the image method and contour integration. For the usual case of a highly reflective specular lid, values of ∊_a throughout the cavity are slightly lower than when all surfaces are diffuse. On the other hand, if the intrinsic emissivity of the specular lid is numerically the same as the diffuse emissivity of the rest of the cavity walls (an uncommon practical case), ∊_a is marginally higher in the specular lid cavity.

© 1986 Optical Society of America

Emissivities of diffuse cavities. 4: Isothermal and nonisothermal cylindro-inner-cones

Ronald E. Bedford, C. K. Ma, Zaixiang Chu, Yuxing Sun, and Shouren Chen
Appl. Opt. 24(18) 2971-2980 (1985)

Emissivities of diffuse cavities, II: Isothermal and nonisothermal cylindro-cones

R. E. Bedford and C. K. Ma
J. Opt. Soc. Am. 65(5) 565-572 (1975)

General formulation for the integrated effective emissivity of any axisymmetric diffuse blackbody cavity

Zaixiang Chu, Ronald E. Bedford, Wenhui Xu, and Xianping Liu
Appl. Opt. 28(10) 1826-1829 (1989)

Numerical calculation of effective emissivities of diffuse cones with a series technique

Yoshiko Ohwada
Appl. Opt. 20(19) 3332-3335 (1981)

Radiant emission characteristics of isothermal diffuse cylindrical-inner-cone cavities

Chu Zaixiang, Chen Souren, and Chen Hongpan
J. Opt. Soc. Am. 70(10) 1270-1274 (1980)