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Making a Desiccant Air Dryer with Silica Gel
awemawson:
Thanks Dickeybird
I've not measured the pressure drop but it will be minimal. The sintered silencer I'm using seems to present very little resistance blowing through it, and the silica gel crystals are large enough to have big gaps for air flow.
The air is not really expanding within the dryer so I'd not expect much cooling effect, though again I've not measured it - if air is flowing then I'm using the tool that's using the air, not feeling the dryer :ddb:
shipto:
Well theres no doubt it works to some extent at least. good job :thumbup:
awemawson:
So I thought I'd take a peek at at after it had been cooking for one hour. Superficially it all looked to have turned back to the original orange, but when I raked the surface there were still a few blue crystals, So I gave it a goodly stir up and have left it for it's second hour.
Certainly when I opened oven door, masses of steam came out to the extent that my glasses fogged up :clap:
I seem to remember that silica gel can absorb it's own weight in water - now there's roughly 1kg cooking, so up to a litre of water if it was all used up.
awemawson:
--- Quote from: shipto on April 22, 2017, 06:56:42 AM ---Well theres no doubt it works to some extent at least. good job :thumbup:
--- End quote ---
Oh it's most certainly working, there is a noticeable difference in my shop air.
shipto:
It's a good solution to remember, I may have mentioned we used to have a dragun brand plasma at work with built in air that had no drying and ate consumables at a extraordinary rate
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