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- Newsgroups: alt.folklore.science
- Path: sparky!uunet!munnari.oz.au!bruce.cs.monash.edu.au!monu6!nella9.cc.monash.edu.au!bcadamso
- From: bcadamso@nella9.cc.monash.edu.au (B.C. Adamson)
- Subject: Re: Hot Water flow mystery.
- Message-ID: <bcadamso.724920659@nella9.cc.monash.edu.au>
- Sender: news@monu6.cc.monash.edu.au (Usenet system)
- Organization: Monash University, Melb., Australia.
- References: <1992Dec14.214841.4240@dbsun.uucp> <BzFnIL.Muz@ccu.umanitoba.ca>
- Date: Mon, 21 Dec 1992 06:50:59 GMT
- Lines: 26
-
- 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.
-