To more accurately model the energy input from the sun, suppose the absorbed flux in Problem 3.23 is given by where t is in hours and is in W/m2 . (This time variation of gives the same total heat...

To more accurately model the energy input from the sun,

suppose the absorbed flux in Problem 3.23 is given by

where t is in hours and is in W/m2

. (This time variation of gives the same total heat input to the wall as

in Problem 3.23, i.e., 2000 W h/m2

). Repeat Problem 3.23

with the above equation for in place of the constant

values of 500 W/m2

. Explain your results.