Hi,
We used a Berkeley pump on one project and it produced an extra 15% over a crossflow turbine (which had exploded). It runs a constant 22 kW and has a 4" input. We also took a 15 hp three phase motor and had it rewired for 12 lead rather than nine and have it hooked up for single phase 240 volt operation. David ----- Original Message ----- From: "H2MJD" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, January 19, 2005 10:52 AM Subject: Re: [microhydro] Re: Looking for Turbine > > > 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 > > > > > > > > > Does your company feature in the microhydro business directory at > http://microhydropower.net/directory ? If not, please register free of > charge and be exposed to the microhydro community world wide! > > NOTE: The advertisements in this email are added by Yahoogroups who > provides us with free email group services. The microhydro-group does not > endorse products or support the advertisements in any way. > > More information on micro hydropower at http://microhydropower.net > > To unsubscribe: send empty message to > [EMAIL PROTECTED] > > > > ------------------------------------------------------------------------------ > Yahoo! Groups Links > > a.. To visit your group on the web, go to: > http://groups.yahoo.com/group/microhydro/ > > b.. To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of > Service. > > > > [Non-text portions of this message have been removed] > > > > > > > > Does your company feature in the microhydro business directory at > http://microhydropower.net/directory ? 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If not, please register free of charge and be exposed to the microhydro community world wide! NOTE: The advertisements in this email are added by Yahoogroups who provides us with free email group services. The microhydro-group does not endorse products or support the advertisements in any way. More information on micro hydropower at http://microhydropower.net To unsubscribe: send empty message to [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/microhydro/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
