It does NOT sound like a very good height for an overshot waterwheel. It would be a very large and massive and difficult to build and maintain, UNDERSHOT would be better, though still a very large and massive -- Specially if using all 58 m^3/sec water volume, due to the 1.24 meter one needs to assume that is going to be 59 meters long as a minimum -- not need to explain and detail the building set up.
SCREW or PROPELLER turbine would be the logical and PRACTICAL solution -- and it may be several units in parallel to attain the necessary power and the practicability of the project. Let's think what is practical first, and not what One loves to do or build that may become "dreams" and produces nightmares. Regards Nando ----- Original Message ----- From: "peterevans_33" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, August 12, 2005 9:16 PM Subject: [microhydro] Re: Mini Hydro- Flow of 59 cub Mtr/ Sec & a head of 1.24 Mtrs > 1.24m sounds like a very good height for an overshot waterwheel. > > Apparently those made of steel are better than wood. 59 m^3 and 1.24m > head = 600W... no this does not sound right to me. That is about > 60000 kg of water per second. Now PE = mgh = 60000 x 10 x 1.24=750000W > = 750kw > > Now 750kw x effeficienty of wheel = about 600kw.. seems a huge amount. > 59 cubice meters per second is huge. The waterwheel would have to be > very wide I imagine to physically handle such an amount, thus kaplan > may be better. Assume you want to harness all of it? Assume you have a > weir built there already? > > The people that make waterwheels say that have very high effeciency, > are often more cost effective for low head projects. Some wheels run > for 60 to 80 years without trouble. But yes would have to be very wide > wheel to harness this power. Undershot is an option too, also could be > more cost effective than Kaplan.. > > As said before 600kW not 600W > > N. Peter Evans > > > > > --- In [email protected], yash chawla <[EMAIL PROTECTED]> wrote: >> Dear Friends >> >> If we can find some Micro Hydel Turbine so as to get Electrical power >> that can be generated economically out of Flow of 59 cub Mtr/ Sec & a >> head of 1.24 Mtrs run of the river model. >> >> Yash > > > > > > > > > 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 --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/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/
