The heat transfer coefficient for a gas flowing over a thin flat plate 3 m long and 0.3 m wide varies with distance from the leading edge according to

hc (x) = 10 ?? ???1/4 W/(m2K)

If the plate temperature is 170°C and the gas temperature is 30°C, calculate

(a) The average heat transfer coefficient,

(b) The rate of heat transfer between the plate and the gas and

(c) The local heat flux 2 m from the leading edge.

GIVEN

Gas flowing over a 3 m long by 0.3 m wide flat plate

Heat transfer coefficient (hc) is given by the equation above

The plate temperature (TP) = 170°C

The gas temperature (TG) = 30°C

ASSUMPTIONS

Steady stateprevails

3 m- Tp= 170C - Gas 0.3 m To- 30C