Hi Carl, Max and all:
Following my former comments about Banki turbines, Max history about it is right (...I dont know which is the real name... Michell or Mitchell?, can anyone clear me that?). More information can be found in SKAT - Harnessing Water Power on a Small Scale, Volume 2 -"Hyraulics Engineering Manual" by Alex Arter / Ueli Meir. Cink (Chzec.) and IREM (Italy) Banki turbines have a cilindrical flow regulator device that increase or decrease the nozzle 'window area' instead of special profiled blade as in Ossberger , SKAT (Switzerland) and others cross flow models. We use the last one device in our M-B turbines. I have good experience in cross-flow construction since 1991 and so I like interchange our experiences with other builders specially in the runner construction and blade welding, fatigue failures, etc. Our normal runners are 200 mm and 300 mm outside diameter. A 300 mm diameter runner was arrived today for repair work from a turbine that we install in 2000. Runner came with 3 blades out because stones impact and fatigue failures. I must take some photos for our files that can be sent directly to those interested for discussion. Regards, Carlos E. Bonifetti MTF LTDA. ------------------------------------------------------ ----- Original Message ----- From: "Max Enfield" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, March 29, 2005 6:33 AM Subject: Re: [microhydro] BANKI TURBINE > > > Carl Roberts wrote: >> >> I can find very little on this. The only manufacturers seem to be >> european. However a very good site for discussing it and a lot of >> hydropower calculations and issues is: >> >> http://home.carolina.rr.com/microhydro/menu.html#Micro%20Hydro% >> 20Power%20Calculations >> >> The only small turbines available commercially seem to be turgo or >> pelton. Harris, ES&D and Hartvigen-Hydro. > > The Cross Flow turbine was invented by an Australian engineer, A.G.M > Mitchell > and patented by him in 1903. The Hungarian Professor Donat Banki later > refined > the design and this has subsequently been refined by others, notably > Ossberger > in Germany and Cink in the Czech republic. So european dominance in this > area > is understandable. > > There are however several other manufacturers outside of Europe, including > Canyon Industries in the U.S and ourselves in Australia. Details are in > the > hydro-power section of our website http://www.planetarypower.com.au . We > have > never sold a unit to the U.S.A, but I like to think that we have helped > several > of our North American friends to build their own. > > You are welcome to contact me directly with any specific questions > regarding > Banki-crossflow turbines. > > Regards, > > Max Enfield > Planetary Power > > > > > > > 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 --------------------~--> What would our lives be like without music, dance, and theater? Donate or volunteer in the arts today at Network for Good! http://us.click.yahoo.com/TzSHvD/SOnJAA/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/
