Heat Transferring
If the heat transfer coefficient is 80 W/[(m^2)(°C)], what is the heat transfer rate for 400°C hot air flowing across a 4 m^2 surface that is at 100°C?
Expand Hint
$$$\dot{Q}=hA\Delta T$$$
where
$$h$$
is the convection heat transfer coefficient of the fluid,
$$A$$
is the convection surface area,
$$\Delta T$$
is the change in temperature.
Hint 2
No need to convert to Kelvin units.
Newton's Law of Cooling:
$$$\dot{Q}=hA\Delta T$$$
where
$$h$$
is the convection heat transfer coefficient of the fluid,
$$A$$
is the convection surface area,
$$\Delta T$$
is the change in temperature.
$$$\dot{Q}=80\frac{W}{m^2C}(4m^2)(400^{\circ}C-100^{\circ}C)=96,000\:W$$$
96,000 W
Time Analysis
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