The network method has been applied to a five-layer wail with thermal
conductivities and heat-transfer coefficients varying with temperature
. The following boundary conditions have been assumed on the exterior:
(i) periodic incident radiative heat flux; (ii) natural convection of
the surrounding air, the temperature of which varies periodically; an
d (iii) thermal radiation to a background sink. (C) 1997 Elsevier Scie
nce Ltd.