posted 25 September 2005 12:38 AM                      

http://nxtwave.tripod.com/gaiatech/pulser/models/index.htm (models for demonstration)
and
http://www.animatedsoftware.com/elearning/All%20About%20Pumps/aapumps.swf

posted 29 September 2005 06:07 PM                      

posted 28 September 2005 08:16 AM
"Looked at it, seems it needs a large amount of fall, and a fair amount of water to generate a small amount of lift for a small amount of water. Wouldn't it be easier to walk back up stream and put in a pipe? No moving parts, no need to build a dam".
Seems you looked hard. A half meter is an insignificant amount of fall. Check out the fall that most rams use. Check out the fall that turbines use.
It ISNT a hydraulic ram either. Perhaps people could give it more than 10 seconds before dismissing it? And that thing about a pipe going upriver to replace it and not needing a half meter dam! Where I built it, it would be at least half a mile of 1 inch pipe and I am pretty sure the neighbours would have objected. And, have you ever laid pipe in a stream with a really low grade? I have. It has to maintain a near perfect grade or it airlocks and will not flow properly.
Sorry for being caustic but I have got the same 5 or 6 types of dismissive comments for years.
Can you imagine a place with streams, no piped water and no electricity and worthless money? These places exist. This type of pump is useful to those people. Wrong claims about what the pump is are not helpful.
Brian

posted 29 September 2005 06:23 PM                      

posted 28 September 2005 11:22 AM
"It looks like a variation on the Cobalt Ragged Chute"
That is pretty close. They built those tromps all over the world and they disappeared when hydro-electricity came into being.
It seems that they were not interested or never tried a tiny version. The problem with the giant tromps is that they produce the "bends" in fish because nitrogen is highly soluble in water.
Smaller versions should not this problem because the compression is so much lower but the parameters need to be found.
You can help especially if you are in the biology or physics field in university or college.
Thousands of people across the world now know about this little tromp. It is overdue time to give them some direction about how big they can build. The best sizes to enhance wildlife, and provide power with minimal cost needs to be known.
Yet I am the only person I know of who has done any research on it.
It is time for universitys to do the research, find the perameters and have a simple design kit for pulser pumps for different situations.
Lots of people have tonnes of water per second falling half a meter in rivers near their habitation. Nothing highly technological can easily harness the power of that water without the input of a whole lot of money.
A pulser pump just needs sweat equity and a plan.
Tell people how and they gan help themselves.
Brian White