Discussion:
Low energy
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Dave
2022-07-28 16:46:45 UTC
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In 1857 Hector had the bright idea in his lodgings to dry his woollen
socks in a low pressure vacuum chamber. Unfortunately he died a couple
of years later from mercury poisoning, but the undertaker said he had
the cleanest, freshest feet of any young man he had buried.

Moral of the tale: low energy isn't always best.

So what have chemical engineers come up with as a suitable room
temperature alternative, so you don't need 33ft of water, or 1000mm of
mercury? (too high/ too toxic).
Jim Pennino
2022-07-28 17:26:11 UTC
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Post by Dave
In 1857 Hector had the bright idea in his lodgings to dry his woollen
socks in a low pressure vacuum chamber. Unfortunately he died a couple
of years later from mercury poisoning, but the undertaker said he had
the cleanest, freshest feet of any young man he had buried.
Moral of the tale: low energy isn't always best.
So what have chemical engineers come up with as a suitable room
temperature alternative, so you don't need 33ft of water, or 1000mm of
mercury? (too high/ too toxic).
Electric, automatic dryers were invented circa 1938.

It is to be noted that dryers intentionally heat their load to a
temperature sufficient to kill tiny flora and fauna, as well as eggs,
that survive the washing process and that drying by direct exposure to
sunlight for three hours is required to come close to the same kill rate.
Dave
2022-07-29 07:13:31 UTC
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Post by Jim Pennino
Post by Dave
In 1857 Hector had the bright idea in his lodgings to dry his woollen
socks in a low pressure vacuum chamber. Unfortunately he died a couple
of years later from mercury poisoning, but the undertaker said he had
the cleanest, freshest feet of any young man he had buried.
Moral of the tale: low energy isn't always best.
So what have chemical engineers come up with as a suitable room
temperature alternative, so you don't need 33ft of water, or 1000mm of
mercury? (too high/ too toxic).
Electric, automatic dryers were invented circa 1938.
It is to be noted that dryers intentionally heat their load to a
temperature sufficient to kill tiny flora and fauna, as well as eggs,
that survive the washing process and that drying by direct exposure to
sunlight for three hours is required to come close to the same kill rate.
The best I came across was gallium (30 C) or fields metal (62 C). Since
gallium is another element, is there room for improvement with a compound?

I'm not the first person to ask this question:
https://www.physicsforums.com/threads/cheap-high-density-liquid.480357/
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