Hello , Don Scarlett:
Thanks for the heads up on Thomson & Howe and "Pumps as Turbines" as a
possible solution to my quest. Actually i had purchased that book entitled
"Pumps as Turbines" about three years ago and spent about a year looking for
the right pump(as their formulas dictated) and then proceeded to plumb it in
and wired it up only to be hugely disappointed. At full flow i was supposed to
get about 12 KW and only got about 3KW. I have since removed that experiment
from the power house. I wish i had known about Thomson and Howe back then, i
never did find out why the performance was so bad. Currently i have a 1KW
pelton and a 4 KW pelton on line, both dual nozzles, both direct drive at 1850
rpm(both just a little mismatched from optimum rpm but hey, no belts to mess
with) and both are induction units utility interfaced at 240 VAC 1 phase. I'm
alittle leary of putting a 33KW 240 VAC 1 phase unit on line because i'm not
overly confident of balancing the third phase with no previous experience of
that size.....any reccomendations on schematics or books i can read up on?
Again thanks for your help.
Mark
----- Original Message -----
From: Donald/Elizabeth Scarlett
To: [email protected]
Sent: Sunday, January 16, 2005 11:48 PM
Subject: [microhydro] Re: Looking for Turbine
Hello, Mark Drabick:
The lowest cost option for a turbine of the head and flow rate you
describe may well be one or more industrial centrifugal pumps. It should be
possible to match these to your site so that they can be run direct drive
and operate with efficiencies well over 70%. The use of multiple pumps
would be necessary if your available flow varies significantly through the
year. I have had excellent results using pumps as turbines on recent
projects of 25 kW and 18 kW. I purchased the pumps, suitably sized and
matched to the application, through Thomson & Howe Energy Systems of
Kimberley, British Columbia (250-427-4326).
Regards,
Don Scarlett
**********
Mark:
You could get one designed to your site if you want to import it from
outside the country at a lower price than acquired in USA.
If interested let me know
The site's data you provide is good for around 33 or so KW.
Some times is best to have two units in parallel to assure long term 100 %
available power.
Regards
Nando
----- Original Message -----
From: "H2MJD" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, January 12, 2005 1:09 PM
Subject: [microhydro] Looking for Turbine
>
>
> Hey all........I was wondering if anyone out there has any leads on a
turbine which would fit my site........I'm looking for a cross flow or
pelton type that would run at 130 ft of head and pass up to 5 cfs.....am
more than happy to refurbish a "removed from service/used" unit......thanks,
Mark Drabick
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