Another micro-hydro...... [RE-wrenches]

[John Veix]

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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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