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Thread: Evap fin spacing and freezeup
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16-01-2011, 01:05 PM #20
Re: Evap fin spacing and freezeup
I think as was mentioned above that the factors are so innumerous that its very hard to say.
Fin spacing - Icing would not form as rapidly at the air on contact point and would be drawn further into the coil.
Air velocity - The faster the air is moving the more likely the moisture will travel into the coil before condensing will take place.
Coil Depth - The deeper the coil the more your temp drop across your evap, the greater amount of moisture deposited
Humidity - The higher the humidity, the quicker it will condense and therefore ice closer to the air on side - the converse is also true
Etc Etc
Change any one of those factors in your coil design and I'd imagine you'd come up with a vastly different outcome.
The best solution as I see it is to examine the market and prevailing weather conditions you are planning to sell to - in Mikes case canada for a start - then adapt your coil to suit the prevailing weather conditions.
So he'll need to prevent snow ingress - Horizontal or angled coil, low humidity, and a short but intense heating season.