Another micro-hydro...... [RE-wrenches]
John Veix
john at gosolar.co.nz
Thu Feb 23 01:31:48 PST 2006
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Jeff,
The 150 kPa is the static reading - when its running it drops to 120 to 130
(max) kPa
cheers,
John V
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
----- Original Message -----
From: "Jeff Clearwater" <clrwater at earthlink.net>
To: <RE-wrenches at topica.com>
Sent: Thursday, February 23, 2006 5:55 PM
Subject: Re: Another micro-hydro...... [RE-wrenches]
> Hi John,
>
> You say 150 kPa - that translates to 21.8 PSI or about 50.2' of head. Not
> exactly low head - or did I do that calc wrong? Or did you mean 15kPa?
> What's the flow? What's the present power level?
>
> If it is 50' of head you might consider going to a Turgo or Pelton wheel
> and you should contact either Canyon Industries or HiPower at
> http://hipowerhydro.com/index.htm.
>
> If you meant 5' of head then contact Ron Macleod for a Scroll Francis
> Turbine.at http://www.waterturbine.com/index.html Francis' will work up
> to 50' of head too but will be more expensive than a pelton.
>
> Canyon can also probably rework the old Mitchell. If you have a
> cross-flow you probably have less than 50' of head. Pray tell.
>
> Best,
>
> Jeff C.
> Village Power Design
>
>
>>
>>Hi all,
>>
>>While on the subject of micro-hydro units, a client has an old Mitchell
>>cross-flow that is getting worn out after about 10 years use. It is low
>>head, high flow - 150 Kpa (static) and 225mm pipe on the intake, which is
>>9" pipe.
>>
>>Does anyone have any clever ideas for a different replacement unit as
>>opposed to the re-work that is involved bringing the existing unit up to
>>spec.
>>
>> thanks, John Veix, Christchurch, N.Z.
>>[Non-text portions of this message have been removed]
>>
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>
>
> --
> ~~~~~~~~~~~~~
> Jeff Clearwater
> Village Power Design Associates
> Sustainable Energy & Water Solutions for Home & Village
> http://www.villagepower.com
> gosolar at villagepower.com
>
> 530-470-9166
> 877-SOLARVillage
> 877-765-2784
> 425 Nimrod St.
> Nevada City, CA 95959
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~`~
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