Hi Ron,
Two notes of caution since your design probably won't be tested for several
years
to come.
1) Sucking air from a plenum is not as effective at cooling as a duct-
directed push of cooling air at the radios. This is what commercial
installations do.
2) The number of calories generated by your solid state radios, even if
optimally harvested and blown against the windscreen will have a
marginal effect on condensation unless you concentrate the blast against a
small spot. Your fan placement has the warm air widely separated and
sourcing what is probably 4-5" from the plexi. With turbulent flow from the
fans, I suspect you will not get much heat effect although you might
increase evaporation just by moving air.
Regards,
--------
Ira N224XS
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