Illustration 2
A large vertical plate 4 m high is maintained at  and exposed to atmospheric air at  . Calculate the heat transfer coefficient if the plate is 10 m wide.
Properties are
 using equation 7 in which  and D as height of plate.
Another equation for heat transfer coefficient is
 |
(19) |
The difference between equation 7 and 19 is in the value of pre exponent and exponent value. we calculate
From this value of Nusselt number
Note that h is 0.93 times smaller than calculated by equation.
References
1)J.P. Holman .Heat Transfer, P 346.
2) R. Schuhmann: Metallurgical Engineering, Volume 1 Engineering Principles
3) D.R.Poirier and G.H.Geiger: Transport phenomena in materials processing |
