"sPoNiX" wrote in message
...
On Fri, 2 Apr 2004 14:34:10 +0100, "David W.E. Roberts"
wrote:

As with the 'mains water' generator you would need to store the
electricity
(unless you are not on a water meter and plan to run the tap 24/7).

No water meter

It was just an idle thought that you could devise some system that
operated a turbine whenever the water supply wasn't being used. The
energy could be stored in a series of batteries for use when needed.

Whenever the water pressure is needed somewhere else the water supply
could be diverted and the gererator allowed to spin down.

You could have a large tank at high level and one at low level. The mains
water turns the genny to produce power to heat a thermal store of water.
The genny turbine would have another pump on the same shaft. This pump,
pumps water from the low tank to the high level tank. When the high tank is
full the water from the high tank is released to turn the genny and flows
into the lower tank. Start all over again. You are getting the power to
raise the water free ( the water companies pumps in fact).