Question

Air at 40C flows over a 2 m long flat plate with a free stream velocity of 7 m/s. Assume the width of the plate (into the paper) is 0.5 m. If the plate is at a constant temperature of 100C, find:

Answer 1

Complete Question

Air at 40C flows over a 2 m long flat plate with a free stream velocity of 7m/s. Assume the width of the plate (into the paper) is 0.5 m. If the plate is at a co temperature of 100C,find:

The total heat transfer rate from the plate to the air

Answer:

`q=1.7845`

Step-by-step explanation:

From the question we are told that:

Air Temperature
`T_1=40c`

Length
`l=2m`

Velocity
`v=7m/s`

Width
`w=0.5`

Constant temperature
`T_t= 100C`

Generally the equation for Total heat Transfer is mathematically given by

`q=hA(T_s-T_\infty)`

Where

h=Convective heat transfer coefficient

`h=29.9075w/m^2k`

Therefore

`q=h(L*B)(T_s-T_\infty)`

`q=29.9075*(2*0.5)(100+273-(40+273))`

`q=1794.45w`

`q=1.7845`