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- From: Robert.T.Warfield@dartmouth.edu (Robert T. Warfield)
- Newsgroups: alt.folklore.science
- Subject: Re: Hot Water flow mystery.
- Message-ID: <1992Dec22.123108.970@dartvax.dartmouth.edu>
- Date: 22 Dec 92 12:31:08 GMT
- References: <1992Dec14.214841.4240@dbsun.uucp>
- <BzFnIL.Muz@ccu.umanitoba.ca>
- <bcadamso.724920659@nella9.cc.monash.edu.au>
- Sender: news@dartvax.dartmouth.edu (The News Manager)
- Organization: Dartmouth College, Hanover, NH
- Lines: 40
- X-Posted-From: InterNews1.0b3@newshost.dartmouth.edu
-
- 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
-