Homemade engine dehumidifier question

[Nico1]

Am building my own engine dehumidifier, closed circuit. One question i didn’t find a good answer to: are there any dangers of any byproducts the silica gel beeds that could potentially be harmful to the engine? Dont want the medicine to be worse than the disease…

[AMG880]

i did the same thing for my engine, used a 1 gallon capacity airtight tupperware style container. I use the color changing desicant beads, they go from orange when new, to dark green when saturated. To my knowledge there is nothing in them that can harm an engine, provided no particles make it through the system into the crankcase. Some of the commercially available ones use similar style desicant. 

Been using it for 2 years now, no issues that i know of. 1 gallon of desicant will last several months here in humid Ohio. 

[GeeBee]

I placed an air filter inside the box over the air outlet. I used a little engine air filter off a Briggs and Stratton.

[bonal]

Our hangar would get saturated following rainy days didn’t leak during the rain but following the storms in the early morning condensation would be so bad it was like a rain shower in the hangar.  Simple solution was to put a box fan leaning against the wall angled towards the ceiling and have it run for five or six hours in the pre dawn on a timer. Worked great would have been even better if I had placed it against the door pointing up towards the front of the cowling directing the air into the cowl. Next winter I’ll do that. I know that it won’t work for internal engine condensation but I’m sure the reduction in the overall condensation in the hangar would be an improvement.