Question 5
The upper surface of a 60-cm thick solid plate ($k = 237$ W/m.K) is being cooled by
water with temperature of $20$ $^\circ$C as shown in Figure Q5. The upper and lower surfaces
of the solid plate are maintained at constant temperatures of $80$ $^\circ$C and $120$ $^\circ$C,
respectively. If the thermal conductivity of water at the film temperature is $k_{water} = 0.644$
W/m.K, assuming no-slip condition at the plate surface, compute
5.1 the water convection heat transfer coefficient, and
(3)
5.2 the water temperature gradient at the upper plate surface.
(6)
Water
Figure Q5
[9]
TOTAL MARKS: 58
