In a message dated 4/29/2005 8:09:49 PM GMT Daylight Time, ... A leat is an artificial watercourse that takes water from say a river and conveys it to a point...
is there any reason a 1 wire 12v gm alternator will not work attached to a pelton wheel . 75 ft head 40 gpm 800ft alternator to batteries.....thank you for...
... Since this is a reaction turbine, the speed is not related to kinetic energy at atmospheric pressure. It is related to area of the tube. Diameter is 0.35m...
Dear Microhydro Group: I will be in Kenya in late May and would like to visit villages with microhydros in place or under construction. Furthermore, I would...
Thomas, J. Brian
Brian_Thomas@...
May 2, 2005 6:44 am
5799
Yes, too many reasons FOR NOT WORKING: This is a question that is constantly asked in this Forum. 12 volts generation 800 ft distance ( 1800 feet two wires) 1...
Nando
nando37@...
May 2, 2005 4:01 pm
5800
Hello, I am new to the group. I have a potential microhydro site of about: -100 ft head -100 gpm(Winter) to 30gpm(Summer). -I plan to use 3" or 4" pvc piping...
hello Eric Kunz What u have heard of permanent magnet machines is quite right. But when you are converting the ac power to dc and back to ac it shouldnt make...
Hello Eric, I think its a great idea. Back in 1985 i installed a unit quite similar to your site. The head was only about 80 ft if i remember correctly but the...
ERIC: Too much equipment , just the Induction motor is what you need THAT IS ALL. If you have GRID 3 phase use a 3 Phase motor, that is best. Of course you can...
Nando
nando37@...
May 4, 2005 6:54 am
5804
Thanks for the reply. "Pumping" AC directly to the Grid is not a trivial task for any micro-hydro application and it is illegal here. A Phase Control/Flow...
ERIC: No, better understand how the GRID connected motor converts to an induction generator. The RPM of the motor as fed by the Turbine needs to be higher than...
Nando
nando37@...
May 4, 2005 1:14 pm
5806
Eric, I didn't mean to imply do anything illegal.......in reality you'd be "pumping" AC directly into the grid with your windy boy approach......it was...
In a message dated 5/4/2005 7:23:17 PM GMT Daylight Time, ... Can someone tell me how you can provide this 'utility required' protection with a directly...
All, I have just returned from the Southeast Green Power Summit at Coronado Springs Resort, Walt Disney World. An excellent DVD video was shown after the...
Can someone tell me how you can provide this 'utility required' protection with a directly connected induction motor. My understanding is that power will flow...
Perran: The induction motor (Generator) GRID connected, follows the GRID frequency and the RPM of the GEN, in this case, is going to be the RPM defined by the ...
Nando
nando37@...
May 6, 2005 3:32 pm
5811
hello microhydro members, Do we have some exhaustive journals for small hydro and micro hydro. Please tell me. I am a newbie in this area. I would like to...
Hello All, We have been building ram pumps for a number of years. Our interest has been renewed by the prospect of long term high oil prices. It seems that the...
Dear Ron and all, That's right with the ram pumps. Your designs looks good. Here in Chile there are commercial good cast iron ram pumps of several sizes and at...
Surya A comprehensive review is available in Microhydro: Clean Power from Water by Scott L Davis. It's generally available but here's a certain source: ...
John W
jw2004@...
May 9, 2005 4:07 pm
5815
Hi Nando, Could you expound a bit on the "(synchronous current detection)" that you mention. I use a clamp on meter as an amperage detector. As I change ...
Surya, The best periodical resource for microhydro (under 50 kW) is probably Home Power magazine. You can purchase disks containing all back issues from their...
David: One may use the AC voltage polarity to detect the current direction (in or out) of the motor to determine if working as a motor ( IN) or as a generator ...
Nando
nando37@...
May 10, 2005 12:32 pm
5818
We designed our model ram pumps so that all the working parts can be replaced in a few minutes by nearly anyone, using small tools. There is no need to ...
First off Let me say I have never used a Ram Pump, but was introduced to the concept some years back while in a college program centered around Alternative...
Hellow Doolla, You can look at www.itdg.org for MHP literature. Also for HYDRONET magazine. In www.itdg.org.pe you can find the HIDRORED magazine, but in...
I have an operating ram pump which I constructed locally 2 years ago from pipe fittings. It irrigates a friend's vegetable garden It is reliable and can...
YES! ... __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/...
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