Re: [Phys-l] Heat transfer lab

[Bennett <bennett@oakland.edu>]

I think the vent stays open except when steam wets or heats it.

On Fri, Nov 19, 2010 at 1:01 PM, chuck britton <cvbritton@mac.com> wrote:

> I suspect any 'boiler system' has to have a way to equalize to atm
> pressure when the heat is off.
> It's designed for pressure - but couldn't handle the vacuum that
> would result upon cool down?
>
> At 9:17 AM -0800 11/19/10, Bernard Cleyet wrote:
> > bc,  still puzzled by from where the air comes.  (Gets in the
> > system.)   Since it's a closed system, I'd think any initially
> > dissolved air would soon be expelled.  In domestic water systems
> > such air is necessary to prevent water hammer.
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-- 
Clarence Bennett
Oakland University
Dept. of Physics,  (retired)
111 Hannah
Rochester MI 48309
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