It works!
Well, thanks for the leads. In case anyone is interested, I am well into the project now and it seems that for aircraft that remain on the ground a fair deal, dehumidifying has a massive positive effect on the life of your avionics. We are talking almost doubling their life in many cases.
I got hold of reports from the German Air Force, Swedish Air Force , US Marine Corps trials of dehumidification the results are quite impressive.
In most cases the investment paid off in under a year. The only downside I can see is the effort to appply the dehumidifier and convince those whose responsibility it is that it is so worthwhile.
I would love to highlight fleets other than air forces that might respond to dehumidification. Anyone know any routes that see an aircraft locked up and left for a while at the end of a flight. Most airlines turn around so fast that dehumidifiying is pointless but I would like to highlight an airline that, because of wind conditions say, delays its return trip leaving it on the ground for more than 12 hours and doesn't air condition throughout. Maybe a long haul route. Anyone know of any such operation?
This would give my project an airline angle, which I am supposed to be focusing on.