🚀 go-pugleaf

In article <bcadamso.724920659@nella9.cc.monash.edu.au>
bcadamso@nella9.cc.monash.edu.au (B.C. Adamson) writes:

> vnelson@ccu.umanitoba.ca (Gerald Vernon Nelson) writes:
> 
> >In <1992Dec14.214841.4240@dbsun.uucp> check@dbsun.uucp (checkett) writes:
> 
> >>I have a question that bothers me every morning. I wake up and go to the john
> >>to have a shave and turn on the hot water full blast. Over the next 20-30
> >>seconds the water temperature goes from freezing to quite hot as desired. 
> >>The problem is that the flow rate of the water drops off as the temp goes up. 
> >>If I don't touch the faucet the flow nearly stops. What is happening? 
> 
> >When the faucet is closed, the water pressure is at a maximum.
> >When you open the faucet, water rushes out because of the high pressure.
> >But the pressure drops because youve created a leak, so the flow rate
> >drops off.
> 
> >Potential is highest when no current flows, as soon as current flows, 
> >pressure drops due to internal losses and line losses.
> >Works the same with electricity, and air lines.
> 
> >Vern Nelson
> 
> Funny, I always assumed that the hot water was making parts of the tap
> expand and altering the gap that was available for the water to come
> through.
> 
> Boyd.

  If it were just due to water pressure, hou come the cold water tap
doesn't do the same thing?

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Robert T. Warfield@dartmouth.edu