Date: Tue, 1 Feb 2005 20:35:42 +0100 From: "MH" <nomailnospamere.no> Subject: Re: Saab newbie
> ...propane tank builders > had just been using to heat tar. The lower half of the tank was > frosty, neatly marking the part still containing liquid gas. Because the liquid gas (under high pressure) is expanding to near atmospheric pressure and drawing heat from its surroundings, cooling it down to -0C, freezing the moisture in the air. Same things happens in carburetors, and LPG evaporators, these sometimes freeze up. The gas boils, turns from liquid phase to gas phase, like boiling water. Boiling needs heat. > And anyone who has used a bicycle pump can attest > to how warm it becomes, quite quickly. Yes, but that's also because of friction in the pump valves etc. -- MH '72 97 '77 96 '78 95 '79 96 '87 900T8 http://go.to/saab96
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