Model Dependence of the Temperature Slip Coefficient

The linearized problem of heat flow to a cooled plate embedded in a gas is considered and a variational principle for the temperature slip coefficient is given. This variational principle is then applied to a number of special cases analogous to those considered in an earlier paper on momentum slip coefficient. It is found that the temperature slip coefficient is only slightly model-dependent so that heat-flow calculations with simple models are not likely to be very incorrect.