>I have a 3 nozzle Pelton wheel hydrogenerator designed to work at >50psi and between about 0.2 to 1.0 ft^3/sec. > >I'm in a position to increase the pressure to 180psi, same water >flow, and am wondering if I can still use the same Pelton wheel. > >Obviously I will have to change the nozzle size and also the gear >ratio that drives my 1800rpm generator.
Provided you reduce the nozzle size and increase the pelton runner speed then that will work but you may get accelerated wear on the pelton and you will of course need a generator that can take the action. Speed increase will be square root of head increase i.e. 1.9 times faster rpm and jet velocity. Nozzle area needs to reduce by 1.9 times, i.e. 1.4 time smaller diameters for same flow. Power will increase 3.6 times. All of this neglects the effects of friction losses in the penstock/pipe. -- Hugh Scoraig Wind Electric http://www.scoraigwind.co.uk/ ------------------------ Yahoo! Groups Sponsor --------------------~--> Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar. Now with Pop-Up Blocker. Get it for free! http://us.click.yahoo.com/L5YrjA/eSIIAA/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/
