Question

1.     The rate of heat transfer per unit area from a metal plate is 800 W. The surface temperature of the plate is 200°F, and ambient temperature is 68°F. Estimate the convective heat transfer coefficient.

Answer 1

We can find the convective heat transfer coefficient from the formula:

$$q=h\Delta T,$$ h=\dfrac{q}{\Delta T}=\dfrac{800\ \dfrac{W}{m^2}}{200\ ^{\circ}\!F-68\ ^{\circ}\!F}=6.1\ \dfrac{W}{m^{2}\cdot \!^{\circ}\!F}.