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

[Jeff Clearwater]

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Hi John,

Yes, that means you have 50' of elevation change and normal dynamic 
hydraulics with a 9" pipe and a turbine at that height - which is not 
low head.  Without flow rate figures it's hard to decide which 
machine would be best.  Either way the references I gave can step you 
through the design process or contact me offlist.

Best,

Jeff C.
Village Power Design




>
>
>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
>>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~`~
>
>Your free subscription is supported by today's sponsor:
>-------------------------------------------------------------------
>Is your computer freezing up or slowing down?
>Repair corrupt files and harmful errors - protect your PC
>Take a 2-minute PC health check-up at no charge!
>http://click.topica.com/caaerelbz8Qcsa9hBZif/PC Powerscan
>-------------------------------------------------------------------
>
>- - - -
>To send a message: RE-wrenches at topica.com
>
>Archive of previous messages: http://lists.topica.com/lists/RE-wrenches/read
>
>List rules & how to change your email address: 
>www.mrsharkey.com/wrenches/etiquette.php
>
>Check out participant bios: www.mrsharkey.com/wrenches/
>
>Hosted by Home Power magazine
>
>Moderator: michael.welch at homepower.com


-- 
~~~~~~~~~~~~~
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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