If in Problem 15.17, the lower surface of the plate is exposed to air with a convective heat…

If in Problem 15.17, the lower surface of
the plate is exposed to air with a convective heat transfer coefficient of 3
Btu/h ftF, what

a. if radiant emission from the plate is
neglected;

b. if radiant emission from the top surface
of the plate is accounted for?

Problem 15.17

The solar radiation incident on a steel
plate 2 ft square is 400 Btu/h. The plate is 1.4 in. thick and lying
horizontally on an insulating surface, its upper surface being exposed to air
at 90F. If the
convective heat-transfer coefficient between the top surface and the
»

If in Problem 15.17, the lower surface of
the plate is exposed to air with a convective heat transfer coefficient of 3
Btu/h ftF, what

a. if radiant emission from the plate is
neglected;

b. if radiant emission from the top surface
of the plate is accounted for?

Problem 15.17

The solar radiation incident on a steel
plate 2 ft square is 400 Btu/h. The plate is 1.4 in. thick and lying
horizontally on an insulating surface, its upper surface being exposed to air
at 90F. If the
convective heat-transfer coefficient between the top surface and the
surrounding air is 4 Btu/h ftF; what will be the

»

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