Hi Coby, How much power can you productivly use at this site without a grid connection? How far to get a grid connection? This has a potential of about $140,000 USD/year at $50/MW-hr.
An 18" steel pipe at 18 cfs flow will have a head loss of about 12'. I assumed 277' static head (120 psi mentioned) in the calculations rather than the 280' also mentioned. Given an 18" steel pipe, at 18 cfs, the power potential is 320kW (94% generator, 85% turbine). You can put 18 cfs through four nozzles of 2.5" bore. A 12" pitch diameter turbine will direct drive a 1200 rpm (460V 3 phase typical of this size) motor of 400-500 hp. I'll email the spreadsheet directly, or you can download one from my web site and enter your numbers. It does require excel with macros turned on for the visual basic pressure loss calculation. http://h-hydro.com/pipedp.xls Joe --- In [email protected], "cobyroberts" <[EMAIL PROTECTED]> wrote: > All, > > I have painstakingly taken measurements of a stream I have rights to > in the Pacific Northwest for the past year. Thus far my lowest flow > is 18.4 cu. ft. sec. in summer and many more times that in spring. I > have made allot of calculations pertaining to the theoretical energy > I could harvest. Here are some numbers: > > HEAD IN FT: 280 > PSI @ BOTTOM: 120 > LENGTH OF PIPE: 688 > GRID TYPE: OFF-GRID > > Could I get some of your thoughts on what this would be capable of? > Size of AC 240/480 generator, what size of pipe should I use, type of > turbine? > > And another question, I have read allot about ballast or shunt loads, > for instance if the above was capable of a 50kw generator, what would > be a good ballast / shunt load? > > Thanks, > > Coby 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/
