1. In order to determine the size of a home-heating furnace, it
is necessary to estimate the heat loss during the coldest day in
winter. Provide the rates of heat loss per unit surface area for
the following surfaces commonly encountered in house construction.
You may assume an inside air temperature of 25°C, an outside
temperature of -5°C, and heat transfer coefficients of 20 Wm-2K-1
and 5 Wm-2K-1 between air and the outside and inside surfaces,
respectively. The thermal conductivities...