Sounds right to me John and that is what I assumed to be happening. With
the holes in the can the warm air exits out top taking the moisture with it
and draws ambient air in the bottom. Whatever - result is no more
condensation on the glass.
AlanB
-----Original Message-----
From: owner-healeys@autox.team.net [mailto:owner-healeys@autox.team.net] On
Behalf Of John P. New
Sent: 05 January 2006 17:57
To: Warthodson@aol.com
Cc: Alan@nfahc.co.uk; Steve Byers; Healey List
Subject: Re: gauges fogging up
In a cold gauge, when the coils heat up, they a) vaporize any liquid on the
coil and b) heat up the air around the coil, allowing that air to pick up
more moisture. The heat of the coil causes a convective current of air to
travel around the inside of the gauge; the relatively warm, moist air comes
into contact with a cool surface, and condensation forms (I would think
condensation would form on all parts of the gauge that are cold, but you
only notice the condensation on the glass).
Eventually, the entire gauge warms up, and the condensation is re-evaporated
into the air and the fogged glass clears.
Sound plausible?
John P. New
--
London, Ontario, Canada
'67 BJ8
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