I am new to thermal management.
I want to lift about 250 W of heat from hot end of thermoelectric cooler/peltier cooler (TEC).
The temperature of hot side of TEC is 30°C.
I want to use some kind of heat exchanger/chiller to accomplish this task.
I am using equation
$$ P = h S (T_s-T_f) $$ where
$P$ = heat to be removed = 250 W
$h$ = heat transfer coefficient
$S$ = area of contact between hot side of TEC & fluid (air/water) used for convective heat transfer
$T_s$ = temperature of hot end
$T_f$ = temperature of fluid (air/water)
I do not know how to calculate $h$. If I calculate that, it will give me temperature of fluid.
How do I compute $h$?
And is my approach correct?