Chuck, I don't dispute that you can contain water in plastic a long time, but, if some does escape it may not matter to the bottle contents, but it could well raise the humidity of the surround w/in a tightly sealed oven/box/enclosure. Electronics does not much like high humidity.
-John =========== > Sigh! I guess the point is still being missed. It isn't hard at > all to keep water in a container. The plastic water bottle scenario > was created to put the issue into perspective. Perhaps some plastic > bottles don't have the staying power to last into the next century, > but that doesn't in any way indicate that it is a difficult problem. > > There are metal cans that have held liquids for centuries. There > are glass, and ceramic bottles that have held liquids for thousands > of years. > > Surely if you wanted to use a quantity of water to act as a thermal > ballast, or cushion, it would be worth the tiny amount of effort > necessary to enclose it? Perhaps something glued up out of Schedule > 40 PVC pipe? Or maybe a Nalgene bottle? Or a thick walled LDPE > bottle? Even a concrete tank wouldn't be out of the question if > you needed a big enough ballast. There are concrete basins that > have been holding water for decades. > > Don't let the fact that water might leak dissuade you from using > it as a cheap highly capable thermal ballast. > > -Chuck Harris > > Thomas A. Frank wrote: > >> More to the point, you will be disappointed to find the bottles will NOT >> last that long. >> >> Cleaning out the cupboard recently, I can across some bottled water that >> had 1998 date codes. Several had leaked, but one was still intact >> enough to show the likely problem. It would appear that over the past >> 10 years, the gases dissolved in the water migrated through the plastic >> (or the cap seal), resulting in a vacuum forming in the bottle. This >> distended the bottles and caused structural failure. >> >> Either that, or the water caused the plastic to shrink. >> >> Glass would probably fair better. >> >> Tom Frank, KA2CDK > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
