ABSTRACT
In the preceding chapters, enclosure theory was formulated for radiative exchange between surfaces. The local net radiation loss at a surface was balanced by energy supplied by “some other means” that were not explicitly described. This chapter is concerned with the energy transfer at the surface either by conduction from within the volume interior to the surface (such as from within a wall of an enclosure), or by convection or conduction at the surface from a surrounding medium. At each location along the surface the radiation, convection, and conduction combine to form a thermal boundary condition. The solution to the energy equations subject to this condition provides the surface temperature and heat ux distributions. The analysis has the same restrictions as in the previous discussions: the surfaces are opaque, and the medium between the radiating surfaces is perfectly transparent. Note that the medium between the radiating surfaces may be conducting or convecting energy, but it does not interact with radiation passing through it.
