Mihai, I think the others have explained how to calculate the pressure drop in pipes with different flow rates. One thing you maybe did not understand is that...
Dear all, I work on a small scale hydropower project in northern Laos (2400kW). A small dam is diverting water into a dessander, then into a 1,2km pipe...
I thought I had checked the PSI for the 4" PVC and it was OK. The area where the penstock will be is heavily shaded but I will paint the exposed pipe. The...
Thanks Peter, I'm getting a lot of feedback advising against the 4" pipe in favor of 2". Is there no advantage in the larger pipe? 2" would certainly be easier...
Wood Stave Pipelines In my past career (pre-retirement) as an engineer working for a large utility I dealt with a number of old abandoned wood stave pipelines...
Hi all ... thanks for your responses, I think I have enough to get started now. Jen ... From: microhydro@yahoogroups.com [mailto:microhydro@yahoogroups.com]On ...
Jennifer Stephenson
sustain_ability@...
Sep 2, 2005 6:25 am
6130
I think it's ok for you to use PVC pipes as long as you make sure that its thickness is schedule-40 or higher. I'm a bit biased against PVC pipes because thick...
A request for a quotation for two 1 MW turbines with generators was received from Meera & Ceiko Pumps of Ranigunj / Secunderabad / India.. Please see details...
Hello All, I am a new member, but I have enjoyed reading your group for a while now. I have a question. Has anyone explored the use of boat propellers as ...
Hello Martin, Boat propellers can not be used as axial flew turbine runners because the blade tips are rounded and so don't fit well inside the turbine tube,...
Dear all, I am also interrested in the blade profile. Since we, in Suriname (South America) , have low to very low heads, "propellor type" of turbine seems to...
Jack Rabbit has a nice-looking propeller turbine. Check out http://www.jrenergy.com . Jen ... From: microhydro@yahoogroups.com...
Jennifer Stephenson
sustain_ability@...
Sep 5, 2005 9:10 pm
6136
Boat propellors definately do work in micro hydro. If you machine the rounded tips off a bit , they are even better. Add some pre swirl vanes, or a scroll case...
hterbush@...
Sep 5, 2005 10:20 pm
6137
Hi, I've tried using a boat propeller on one of our axial turbines (15kW, 3m gross head) and it worked. What I did is: first I computed for the ideal blade...
Hello everyone, I am new to this so please forgive me if I ask redundant or stupid questions. I have the basic 12 volt photovoltaic system pretty much...
I am glad you think the jackrabbit is nice looking. I know a couple of owners who were disappointed by it. The manufacturer is optimistic in the output curves....
Do you have any more details about schemes where a boat propeller was used or modified for use for a low-head turbine? I am currently working on a project to...
Simpson, Robert
robert.simpson@...
Sep 6, 2005 9:23 am
6141
Dear All, Does anyone know of any schemes where a Low Head pump such as an axial flow pump has been used as a turbine? I am particularly interested in the...
Simpson, Robert
robert.simpson@...
Sep 6, 2005 9:24 am
6142
Dear All, I am a student of Indian Institute of Technology- Delhi,India. I am doing my M.Tech project related with *Terminal Impedance Controller for ...
P. Tamil Selvam
paramatamil@...
Sep 6, 2005 12:21 pm
6143
WOJACK: Since your project is for a portable microhydro, it is best for you, that your generator produces high AC voltage for easy power transport with ...
HYDRO
nando37@...
Sep 6, 2005 4:08 pm
6144
It would be nice to have a spread sheet you could plug in head and such and come up with speed....any chance you have something like that from when you made...
This sounds like an interesting project. For a range of head (say up to 10m) and flow conditions in the 0-5 kW power range, what would be the corresponding...
Hi Eilrem, Have you determined your turbine's efficiency yet? Also, how did you compute the ideal tip speed ratio? I have material that computes diameter,...
The existing turbine has a rotor diameter of 300mm for a speed approx. 800 rpm, H=4m and Flow=150-180 l/s. Which should produce about 4kW-5kW, without...
Simpson, Robert
robert.simpson@...
Sep 7, 2005 10:25 am
6148
If u know abuout this , pls let me also know, I m also interest about this ... -- kyaw tint swe [Non-text portions of this message have been removed]...
Robert: The basic question is : How can us attain the technical information to define and conform the metal to the necessary shape, some countries do have ...
HYDRO
nando37@...
Sep 7, 2005 11:36 am
6150
As yet, I do not have an information package available to be distributed but that is indeed the objective over the next year. I'm sure there are manufacturers...
Simpson, Robert
robert.simpson@...
Sep 7, 2005 4:37 pm
6151
Thank you Hydro, And I appreciate everyone's input about all their projects. I am learning a lot here. I have checked out your web site Mr. Lawley and found a...
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