Re: Water and watering etc.

Brett Lymn (
Tue, 27 Jun 1995 12:55:04 +0930 (CST)

According to Richard Marsden:
>I should think its also quite easy to set up a simple still, using a
>kitchen hob or kettle. Has anyone tried this?

Wellllll, not for water :*) What I did was get a margarine tub and
stuck some plastic tubing to the inside of it to form a coil, filled
the tub with water and ice to make a condenser. If you fed steam
through this you would get distilled water out BUT (and this is a big
one) have you ever really wondered why distilled water is horribly
expensive? It takes one heck of a lot of energy to make steam,
especially at atmospheric pressure. I would suspect that chocking the
fridge open would work out cheaper! In large desalination plants they
play games with pressure to make the water boil at a lower
temperature, I doubt if you would be able to do the same.

If you have access to the condensation outlet of a refrigerative air
conditioner you have a reasonably pure supply of water since this
water is condensed out of the atmosphere just like the frost in a
freezer. I know one guy here that had the condensate piped from his
roof top air conditioner into his rainwater tank. Great idea, he
cools his house and collects pure water at the same time!

-- Brett Lymn, Computer Systems Administrator, AWA Defence Industries
"It's fifteen hundred miles to Ankh-Morpork" he said. "We've got three
hundred and sixty three elephants, fifty carts of forage, the monsoon's
about to break and we're wearing ... we're wearing ... sort of things,
like glass, only dark... dark glass things on our eyes..."
- Terry Pratchett "Moving Pictures".