Evap fin spacing and freezeup

[MikeHolm]

Would it make sense to say that the colder (and/or perhaps, more humid) the climate the wider the fin spacing should be? Assuming all other aspects of the design are optimized for the conditions.

[Bigfreeze]

Would it make sense to say that the colder (and/or perhaps, more humid) the climate the wider the fin spacing should be? Assuming all other aspects of the design are optimized for the conditions.

Humidity is the cause of your frosting problems and cold means a drop in COP. Countries with very cold winters tend to have low levels of humidity (Canada/Central Europe), whereas countries with milder climes (Ireland, UK) tend to have higher humidity in winter. So fin spacing is actually more critical in Ireland and the uk than most countries where apart from snow, which can be sheltered against, blocking of the coil is less frequent

[MikeHolm]

Thanks Guys,
I will have a chat with a couple of coil manufacturers here and see what they can do. The enclosure should be built to keep the rain and snow out. Viessmann makes one like that, A350 I believe.