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General Vintage Technology Discussions For general discussions about vintage radio and other vintage electronics etc. |
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9th Jan 2021, 5:37 pm | #21 |
Nonode
Join Date: Jan 2010
Location: North Somerset, UK.
Posts: 2,129
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Re: Capacity of desiccant
As has already been said, these desiccant packs can be regenerated by heating to about 120 degrees. This can be done in a domestic electric oven. I advise against use of a gas oven as the combustion of the gas produces moisture.
Regeneration at lower temperatures such as by placing on a central heating radiator is possible but less effective as only a proportion of the moisture is removed at the lower temperature. The amount of water removed by a given sized of desiccant pack is very variable according to the relative humidity. More moisture is removed at 80% RH than at 20%. |
9th Jan 2021, 5:39 pm | #22 |
Dekatron
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 13,953
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Re: Capacity of desiccant
Remember though that the military-radios were in hermetically-sealed diecast cases with O-ring seals and waterproof glands on the control-spindles - rated for several hours total immersion in water - and were purged with dry-air before the desiccant-cartridges were fitted.
Unless your proposed bags are airtight, and you purge with dry-air before sealing, I'd suggest using a _lot_ more desiccant. |
9th Jan 2021, 5:45 pm | #23 | |
Dekatron
Join Date: Aug 2003
Location: near Reading (and sometimes Torquay)
Posts: 3,086
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Re: Capacity of desiccant
To definitively check the storage, just include one of the cheap humidity gauges inside the bag. I got a load at a rally (those were the days).
Quote:
When I was a child my father made me put all my stuff in a similar unheated building and everything was wrecked. That is why I have a house full of stuff and no sheds at all! |
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