🚀 go-pugleaf

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.