In a polymeric pipe (50 W/m/K of
thermal conductivity) 14 m long, the
temperature measured at the outermost
radius is 19°C. The temperature at the
innermost pipe surface is 69°C and the
heat flux at outermost surface is one
quarter of the heat flux at innermost
surface of the pipe. Evaluate the whole
heat transfer (absolute value) through
the pipe thickness to the nearest kW.
Note: use pi=3.1415