New Topic - Water Pressure [RE-wrenches]

[Carl Emerson]

Hullo there...

I am inviting comment on one of the most difficult problems I face.

In a remote installation the most common way in NZ to achieve water pressure for a residence is to use an
AC pump with a small pressure chamber.

This is when the client does not want to have a 'header tank' on a high stand.

Now this 'on demand' water pressure system is very energy hungry. Typically the pumps have a high surge
start and cycle on and off constantly under low flow demand conditions.

Now one approach is to replace the AC pump motor with a DC equivalent. Over here 48 Volt 1.5 HP motors
are hard to find. If you can get one then this will help to solve the problem, it will also reduce the
light flicker every time you turn on a tap.

So I wondered if anyone had come up with another solution because as it stands water pressure is one of
the most energy demanding elements of the overall system design.

 Thanks for your thoughts...

Carl Emerson
Manager
FREEPOWER LTD.  "Harnessing Natural Energy"
P.O. Box 10-1207 N.S.M.C. Auckland, NEW ZEALAND.
Ph. 09 4275206 fax 09 4275208  cell 021-633999  web www.freepower.co.nz

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