> In the best case the turbine is able to extract up to two thirds of >the potential energy.
This rule only applies where there is plenty of water and the penstock is the overwhelming cost. In most real situations we increase the penstock size to maximise power on the site. Working at the theoretical maximum means trouble with tuning the turbine, and you are also very vulnerable to degradation of the pipe due to build up of crud in it. -- Hugh Scoraig Wind Electric http://www.scoraigwind.co.uk/ ------------------------ Yahoo! Groups Sponsor --------------------~--> Has someone you know been affected by illness or disease? Network for Good is THE place to support health awareness efforts! http://us.click.yahoo.com/RzSHvD/UOnJAA/79vVAA/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/
