That is why you leave of the filler cap, so that condensation can
evaporate and escape when the metal will take the ambient temperature
again and the relative humidity drops.
This phenomena is always very clear in a garage with a concrete floor.
If it gets hot and steamy outside in the summer, the garage floor will
start to "sweat", in fact water vapour from the is condensating on the
floor, after the floor heats up or the outside temperature drops, the
floor dries out.
It is the reason why I extended the central heating to the garage
Kees Oudesluijs
Al Malin schreef:
> Kees,
>
> Rich is correct because condensation occurs when warm air strikes a
> very cold surface. During the winter after your garage, and contents,
> reach a below-freezing temperature everything will be fine until you
> open the garage during a weather warm-up and a blast of the warmer air
> enters the garage. As the warm air hits the cold surfaces the relative
> humidity near the surface changes dramatically. As the warm air is
> chilled by a cold surface, its relative humidity rises - if it rises
> enough the water vapor condenses and the metal is bathed in a thin
> film of water. Keeping the gas tank full mitigates this condensation
> inside the tank.
>
> Anyone wearing glasses in cold weather has experienced this
> principle. Their glasses will fog up when going from freezing
> temperatures outside to a nice warm house inside. I've had tools
> sitting open in the garage rust during the winter, and, they couldn't
> be ventilated any more.
>
> Al Malin
_______________________________________________
Support Team.Net http://www.team.net/donate.html
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
http://www.team.net/archive
|