Probably not worth ithe money unless you do all the work. The reefer truck unit might be a little big, but OK if it will take a V-belt drive so that you can...
I have been thinking about a similar system converted from an old 20 ton air conditioner. Please let me know if you find any answers in this regaurd. Gord ...
Hi, in our university we use small Cross-flow (Firefly) and Pelton (Rainbow) turbines in the lab to have advanced students' experiments. In order to measure...
Konrad Blum
konrad@...
Mar 6, 2007 8:31 am
8170
Hello Konrad, Since you seem to have a 3-phase synchronous generator, you can use the basic formula n=60f/p (n-speed in rpm; f-generated frequency in Hz; p-...
I bought a Bicycle Computer, Bi-Tech, for £4.99 on offer in a supermarket which measures RPM. I intend to use it to measure the RPM of my turbine in France. ...
Hi Konrad, ... That's perfectly reasonable. If the alternator is directly coupled to the turbine, or through gears or a chain, you will get a highly precise ...
Dear group members, I am very greatful for you contributions. I am requesting for some help with my project. My site characteristics: Q=2.2 cuM/sec H=7m. When...
Question: What % of USA is not connected to the GRID and what % does not use or have electric power?. Sources please Nando...
Nando
nando37@...
Mar 7, 2007 2:51 pm
8176
As many hydro devices can be relatively low speed of rotation, I am investigating the Axial Flux generators being pioneered in Britain. RPM's 300 and lower....
How do they say now? "Way too much information." How about a photo sensor, a resistor, a little voltage, and the average DVM? Most DVMs now days are also...
Hi, Konrad! The very simple solution is to instal a rotating disk on the machine shaft with 60 holes on its edge. From the aperture optocoupler you can receive...
Józef Moch
jmoch@...
Mar 7, 2007 2:55 pm
8179
Hi Nando, We are installing cell service in areas that don't have either electric or telephone lines. See: http://indianspringstelecom.org/ for more ...
Jerome, your site is not appropriate for a Banki turbine, too much water and too less head, so a Banki one woud be very big and bulcky as you are discoverig by...
... In order to have peak power at 450 RPM with net head of 7m, the runner will need to be 260mm to 270mm in diameter. The runner length will depend on the jet...
Max Enfield
max@...
Mar 8, 2007 10:29 pm
8182
Dear All, If anyone wishes to exhibit at the CLA Game Fair Renewable Energy stands please see below for details regards Ferrand The CLA game fair is on 27-29...
Dear Jerome, Please send me instructions for cross flow turbine design, what kind IT book do you use? Regards, Danny _____ I am using the free version of...
Nando Alaska in total is not on the US power grid. Roughly 700,000 people in the state. Southeast Alaska has several communities totaling about 50,000 people...
hydroyes
hydroyes@...
Mar 8, 2007 10:29 pm
8185
Hi Jerome, ... Yes, that's about right. ... It might even be a bit more than 4m length! I would say that's impractical to run a crossflow turbine at 450rpm...
Nando, You know when your formula is used to tell penstcock diameter, I get it all too small in comparison to the formula retscreen gives. Justify? kind...
I have just joined this group and excited to learn and contribute as much as I can about hydroelectric power. I studied chemistry in college and have always...
David: Thanks, US Census may be a good source to define the population without national GRID Power connection. I wonder how many "frontier" places exist in...
Nando
nando37@...
Mar 9, 2007 3:56 pm
8189
though Alaska is not connected to the Main land National GRID, one can say that the state may have or not a "national GRID" if the system is interconnected...
Nando
nando37@...
Mar 9, 2007 3:58 pm
8190
Dear Danny, Thank you for the inerest in my problem. The text book is MICRO-HYDRO DESIGN MANUAL, A guide to small-scale water power schemes by Adam Harvey with...
Michael: I am not looking for a negative. I am looking for a real and practical determination of the people that are not connected to the GRID and the people...
Nando
nando37@...
Mar 10, 2007 6:09 pm
8193
I purchased a 4" plastic Pelton wheel from http://home.altenergystore.com/ in October last year to use in a very small hydro product. This is the second unit,...
Mulenga: I do not follow you, do explain and be more explicit. Nando ... From: sydney mulenga To: microhydro@yahoogroups.com Sent: Friday, March 09, 2007 9:54...
Nando
nando37@...
Mar 10, 2007 6:13 pm
8195
what is the analysis required when measuring river streams and their potential use for hydroelectric project. has anyone created a document regarding this...
Dear Raja Gursahani, If you are after "low head" - 3m and under - and large flows in rivers I may be able to help. See www,grunweb.org.uk/page30.html regards ...
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