Yes, but if it takes 20 years for 1 tsp of water to be lost, I just don't see how that rules out the use of water as a thermal ballast. Water's cheapness and availability in bulk makes it quite attractive for this purpose.
If you don't trust plastic, use copper, or stainless steel, or... If man can keep a vacuum in a vacuum tube for 100 years, surely keeping a little water in a bottle or can isn't that hard? Besides, I don't think we were talking about putting the water inside of a crystal oven. We were talking about using water as a thermal ballast to keep the closet/box your standard occupied at a more stable temperature. -Chuck Harris J. Forster wrote:
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
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