Hello all, this is my first message to the group so please bear with me. I know very little about micro hydro so any help or steering in the right direction...
What is your name ?. The pressure and the volume gives you around 720 watts BUT we need to re-certify the measurements For one, what is the pipe diameter and...
Nando
nando37@...
Jul 2, 2008 4:06 am
9988
I was in hydro development for last 13 years. last two years I was engaged in comm of a turnkey small hydro project. In ths regard I want to read / learn about...
Nando and group, thanks for the quick reply. Sorry first off I should have put a space between the fr and serapheim for my name. I measured the pressure with a...
Fr Serapheim: It seems that you had a fully open facucet when you measured the volume and that is a no-no. If you read carefully you could discover that you...
Nando
nando37@...
Jul 2, 2008 4:40 pm
9991
See http://globalswadeshi.ning.com/forum/topic/show?id=2097821:Topic:1764 regards Ferrand...
This is an old technique to produce power when excess water is available and the head is low. Though a bit expensive and the periodical maintenance of the...
Nando
nando37@...
Jul 3, 2008 6:27 am
9993
Nando and group, thanks again for the quick reply. Yes your quite right, the volume measurement was done with the valve fully open. I will measure the flow...
Marc: You are right, Ram Pumps do not have pistons. Hydraulic pumps of the river do have pumps ( double -) with area ratio to increase the pressure by that...
Nando
nando37@...
Jul 3, 2008 5:00 pm
9997
Pradip: I found one guide on small hydropower development from ESHA ( European small hydropower association), very useful. You can serach it in the publication...
dear friends Besides ram pump there is the sling pump that can be installed on streams and rivers.I woul like to know if anybody has the experience of using...
Also look at the Small Hydropower-Investor Guide By Leonardo Energy.You can download it from the following link ...
mangezit@...
Jul 4, 2008 2:58 pm
10000
Shabab: The sling pump is very easy to make and the only thing difficult to make or get is the rotational coupler to transfer the water to the exiting pipe. ...
Nando
nando37@...
Jul 5, 2008 2:52 pm
10001
Nando and group, following are the averages of the flow at the percentage you asked. The distance of the piping I can only guesstimate now at about 300 meters....
at 50 % or 90 psi 60 liters in 131 secs ; 90/1.42 * 60/131 * 6 = 174 watts at 55 % or 100 psi 60 liters in 137 secs; 100/1.42 * 60/137 * 6 = 185 watts at 60 %...
Nando
nando37@...
Jul 5, 2008 2:52 pm
10003
CAN YOU GIVE ME DETAILS LIKE MIN , MAX , RATEDÂ HEAD AND DISCHARGES OF UNITS, TYPE OF WATER FLOW. SO THAT WE CAN PLAN THE EXACT REQUIREMENT AND WE CAN GIVE U...
would you be kind enough to name the address of the sites where we may find information regarding design , manufacturing of the sling pump. i would also like...
My home is in the Santa Cruz Mountains in California. I'm reading posts, studying online and trying to learn what I need to build and install my own...
John: To see if the ( chocolate milk) can be used, depends on you and the information supplied to see how the "raging" water source can tapped to harvest...
Nando
nando37@...
Jul 7, 2008 11:25 am
10007
Hi, My penstock keeps filling up with air after a day or two and I'm trying to figure out why. Although there is only a couple of inches of water over the...
Vrindaranya, if your penstock pipe end is only a couple of inches below the water level it is quite likely that there is a vortex forming which lets air into...
Vrindaranya, Check the water depth over de penstock at the forebay. Two inches is too much low. You must have at least two pipe diameteres of height, between...
Vrindaranya: You may have air capture via a Vortex or vortex-like turbulence that pulls air into the penstock if the intake flow is fast and just below the...
Nando
nando37@...
Jul 7, 2008 4:17 pm
10012
Vrindaranya, Two inches is not much to cover the outlet pipe but if that is all you have I suggest a vortex plate over the outlet pipe. Slope the plate gently...
rkweir@...
Jul 7, 2008 6:38 pm
10013
Dear Vrindaranya, Some of the best specialists on this list told you how to deal with the problem, in case it is being caused by vortex. Another possibility...
Ricardo Y. Tsukamoto
bioconsu@...
Jul 8, 2008 5:38 am
10014
Thank you Jacques, Carlos, Nando, and Robert for your suggestions. According to the applet, we need 11.2 inches over the pipe. Our water intake is about 100...
Ok. In short: 1) Inlet pipe must be well submerged as per comments from members. 2) Total holes area suggested must be at least 2 times the cross sectional...
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