Radiation Exchange with Transmitting, Reflecting, and Absorbing Media

We now consider a simple extension of the presentations in Secs. 8-10 and 8-11 to analyze a medium where reflection, transmission, and absorption modes are all important. As in Sec. 8-10, we shall analyze a system consisting of two parallel diffuse planes with a medium in between which may absorb, transmit, and reflect radiation. For generality we assume that the surface of the transmitting medium may have both a specular and a diffuse component of reflection. The system is shown in Fig. 8-58. [Pg.436]

The diffuse radiosity 5f a particular surface of the medium is defined by [Pg.436]

The network element representing Eq. (8-93) is shown in Fig. 8-59. This element is quite similar to the one shown in Fig. 8-48. except that here we must take the transmissivity into account. [Pg.436]

The transmitted heat exchange between surfaces 1 and 2 is the same as in Sec. 8-10 that is. [Pg.437]

The heat exchange between surface I and m is computed in the following way. Of that energy leaving surface 1, the amount which arrives at m and contributes to the diffuse radiosity of m is [Pg.437]

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