HerbertMunch
New Member
Can anyone tell me if there is a nice formula for converting watts to degrees c, or is it not that easy ?
Many thanks,
chris.
Many thanks,
chris.
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Pommie said:The fact that the air is forced makes the calculation much simpler. Once up to temperature the energy must heat the air so, if you now the amount of air flowing the temperature rise will be,
K = 1.2 * W / V
Where,
W = Watts
V = Liters/Second air flow. (assumed at 20°C)
So for a flow rate of 2L/S and a 50W element the rise will be 30°K and the outgoing air will be at 50°C.
This comes from the fact that it takes 1.2kJ to heat 1m³ of air 1°K.
Mike.
HerbertMunch said:Im using a 12v dc case fan, measuring 91mm². Is there any way of working out the flow mathmatically?