Re: [Phys-l] Heat transfer lab

[Bernard Cleyet <bernardcleyet@redshift.com>]

Yeah!

I forgot about that, living in a climate where very very cold is 0 C. **  Allergic rhinitis is rife here due to the damp weather's engendering molds.



** There's so much water "around" to give up heat,  it drops < 0 C only for a day or two / 365.


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.

On 2010, Nov 18, , at 14:24, LaMontagne, Bob wrote:

> The leaky system is certainly more comfortable. On a cold New england day the relative humidity indoors (leaky houses) is very low and one's sinuses get way too dry. The extra moisture from the relief valves on the radiators helps matters. You don't get this from a closed two pipe system or from electric heat. On really dry days we put a big pot of water on the stove while cooking to add moisture to the air. Sometimes we put a pan of water on radiators themselves.
>
> Bob at PC
>
> > -----Original Message-----
> > From: phys-l-bounces@carnot.physics.buffalo.edu [mailto:phys-l-
> > bounces@carnot.physics.buffalo.edu] On Behalf Of Bernard Cleyet
> > Sent: Thursday, November 18, 2010 4:30 PM
> > To: Forum for Physics Educators
> > Subject: Re: [Phys-l] Heat transfer lab
> >
> > Air in a closed system?   (Valve only opens when the p(in) > p(out).
> > On cooling is partial vacuumed.
> >
> > bc thinks a leaky system would result in sickness (mold)