Gallery, Projects and General > Project Logs
Making a Desiccant Air Dryer with Silica Gel
Ed ke6bnl:
--- Quote from: Ed ke6bnl on April 25, 2017, 10:13:45 AM ---I made one years ago from a receiver for a large air cond. system. had screens in there and probably safe for excess of 300 psi. has a top that is removable with several screws. NOT CLEAR and it is out side on my car lift. I have never changed or reheated the silica bead. sits for long period in the hot sun and seem to be ready all the time.
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awemawson:
Ed, if the silica gel is in a sealed container the moisture will be retained however warm the sun is :scratch:
PK:
--- Quote from: awemawson on April 25, 2017, 02:23:20 AM ---Mine's rated at 160 psi but only supplied with air regulated to 100 psi so should have a bit of safety margin. However it is a sensible warning, having had a 25 mm 'stop end' blow off I'm aware of the power stored in compressed air.
In the case of my main desiccant drier, it is housed in an unmanned Portakabin, so there should be no risk to life and limb.
In the case of the one on my CNC Plasma Table, it is more exposed, but the input air is regulated down to 70 psi, so a higher safety margin.
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I've used those exact filter cases for desiccant and coolant at 100PSI for years..
awemawson:
That's comforting to know PK :thumbup:
Ed ke6bnl:
--- Quote from: awemawson on April 25, 2017, 12:30:25 PM ---Ed, if the silica gel is in a sealed container the moisture will be retained however warm the sun is :scratch:
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that make sense my only thought is that it get warm and leaves the silica gel and maybe in the 50 foot air line attached and on the first use it is moved out with the air and the remainder is dry air. Some of the line goes under ground and it use to have water with air and i do not see that since it was installed
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