I have several microhydro installations in the Philippines that have the same problem. Some sites are equipped with flow controllers so that the turbine could operate at reduced capacity during the summer season, abeit with lower overall efficiency. Sites equipped with a storage weir/dam have the the option to operate at full capacity during nighttime and conserve water during daytime.
Using a good pelton runner capable of handling 1" dia jet and a minimum penstock diameter of 4" (6" is recommended, but might be too expensive), you can get at least 3kW of net power from your system when operating at 15L/s during winter. Then, you just operate your system for about an hour daily during the summer season. This way, you maximizes the benefits during winter and optimizes the efficiency of the system during summer. 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/
