40000 gpm = 666 gpsecond = 2517 liter/sec = 2.517 m^2/sec 10 feet = 3.38 meter head
Power KW= 3.048 * 2.517 *9.81 = 75 KW So your place by your word using all the water with 10 feet head you can get around 75 KW, HOW MUCH POWER DO YOU NEED ????? Regards Nando ----- Original Message ----- From: "b" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, July 28, 2004 4:46 PM Subject: Re[2]: [microhydro] Determining elevations > Hi Nando, > > Tuesday, July 27, 2004, 4:16:15 PM, you wrote: > > N> Brian; > > N> Since you have JUST 10 feet head, what is the water volume you have ?. > > I do not have a site survey yet - I can only estimate visually at this > point. River is about 20' wide and my wife is up to her eyeballs in > the center of the flow. She's 5'2" so figure 4 1/2' deep. The hole > appears pretty wide so I'd give it an average depth across of 2'. > That's 40 square feet. There's white water around the rocks so I'd say > there's at least 60 feet per minute velocity. 40 square feet times 60 > feet per minute yields 2400 cubic feet per minute. Multiply by 7 > gallons per cubic foot and that yields 96,000 gallons per minute. I'd > wager I could be off by 50% so lets say I have something on the order > of 40,000 GPM to work with. > > I don't know microhydro too well (that's why I am here) but it seems > that's plenty of volume - head is going to be the issue. > > N> If you have a quality Sextant then with geometry you can measure the length > N> of the pipe, you already know the HEAD. > > I am guessing at the head. It could be less - and when you are talking > about that sort of head even a few feet makes a huge difference in > available power (or so I understand it). > > N> There are laser equipment for that purpose that are accurate to a fraction > N> of a centimeter in hundreds of meters, though you pay for those. > > Yes. Pricey stuff. I'm hunting around to see if I might know someone > who might let me borrow one they own. Not likely, I'm afraid. > > I'll be there this coming september so I'll have better detail then. > > Thanks - Brian > > > > > > > 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 > > > > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Yahoo! Domains - Claim yours for only $14.70 http://us.click.yahoo.com/Z1wmxD/DREIAA/yQLSAA/FGYolB/TM --------------------------------------------------------------------~-> 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 <*> 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/
