40 psi. My site has a bit over 100 psi as does Tim's (based on his estimates of head). 40 is typical domestic water supply pressure, but you can get pressure...
Hi folks, I'd like to increase the pressure of my domestic water supply at the house without using an electric pump. Right now we are gravity fed from a...
Hi dave: telll me the latest on your venturi project: they finally lowered the 2 underwater turbines in the east river the other day: they sent me a quick...
Hi Eric, I have a secondary pipe running from my penstock to my ram, which has just 15 feet of head. I run it to an eighty gallon bladder tank and get up to...
Eric: Ram Pump using the hydro system , I do not recommend. Water usage ( stored + wasted) is about 10 to 20 times the stored volume, all depend on the high...
Nando
nando37@...
Jan 4, 2007 7:41 am
7959
The construction is not difficult, some have been buying fiberglass made blades used for high air movers and attaching a pump to produce the volume and the...
Nando
nando37@...
Jan 4, 2007 7:43 am
7960
The float valves I’ve used are basically brass versions of a toilet tank float on a rod that actuates the ¾” valve. The amount of hysteresis is ...
David : With a Turgo Turbine You may obtain what you want , make sure that the Turbine has at least 20 % higher torque ( 40 % is better) to insure the pressure...
Nando
nando37@...
Jan 4, 2007 7:46 am
7962
I seem to have come into the conversation a little late, but I think I can help. I'm the co-author of a book on ducted fans, and this is just the converse of...
Thanks Nando, Nice ideas, especially the flywheel to stabilize the system. Just a pump note....gear pumps use valves on the input while centrifugal pumps use...
Hi Marc, Thanks for joining us!! Clearly you have a wealth of information. I have been trading emails with Dr Brian Kirke from the University of South...
Thanks for joining us!! Clearly you have a wealth of information. I have been trading emails with Dr Brian Kirke from the University of South Australia, and he...
I have pdf of a couple of studies from lancashire university in the files section http://tech.groups.yahoo.com/group/pulserpump (You might have to join to...
Jan. 8, 07 Dear members, We still have some functioning stone mills here in Bolivia of the vertical shaft type, an antique design normally associated with the...
Hi Marc, Well it is a large river, but it is navigatible, so I cannot block it. I do have at least 7 meters of depth at all times, and I could probably 10...
bonsoir, a good new year to all of you. sometime ago i have introduced myself, since then i have been reading your posts, sometimes perhaps not carefully...
Dear Ron and all, As Ron say, I had visited some stone-wood mills in Chiloe island and at other country side areas in Chile. Most of them are ruines but others...
Dear People: Have all of you a nice new year. I have considered to push a hydro project utilizing an open channel utilized for irrigation. The channel is...
Head from pump to storage or pressure plus the volume are the determining factors for the available torque. so torque versus pump pressure ratio is the main...
First, thanks for having this group and allowing me to post. I am looking for some confirmation on calculations in desigining what I believe to the the best...
Hallo, In modelling hydraulic turbine prime mover, I found parameter of Tw ( water starting time). At book "Power System Control and Stability" the Tw is...
First of all, thanks for letting me join into this discussion group. I am doing the research for a 3-4KW low head application and could use some advice on a...
good evening to all of you, very much i had hoped for an estimate for potentially collectable power in the situation i described to you some days ago. alas, no...
Hi What about this. http://www.wicon.at www.oewatec.de/Grafik/SPM-Gutachten05.09.2005.pdf No air and river pollution, good efficiency, no fish kill and lower ...
Jan. 10, 07 Dear Carlos and all, I doubt if anyone knows how many of those vertical shaft mills are currently in use. One source said 25,000 in Nepal alone....
ROBERT: You are going around the wrong path, first you calculate the volume available with the indicated parameters, second you calculate the power available...
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