http://www.appropedia.org/ Pulser_pump is being used by students from Queens University in Toronto for a project on the pulser pump. It will be completed on 1st May 2010 Their initial results support most of what I have reported. They have included pdf files from various other research projects too. Worth a look.
Brian (18th April 2010)
Every second thousands and thousands of gallons of low grade water power runs to waste (low grade is water falling less than 2 meters). some of this water power was used for a thousand years to grind grain or pump for irrigation and other uses too. With cheap fossil fuels as a substitute, it is no longer economical to use this power. (interest on machinery and construction costs is greater than the price of the electricity produced per year).
Pulser pumps are a significantly cheaper and low tech way of using low grade water power so some of this power can be used competitively again!
This is a pulser pump instructable. You can find pulser pump info on utube and in a yahoo group.
Pulser pumps are so mind bogglingly simple that I am the only person who has ever put pulser pump info online.
No peer review= no credibility.
Please check and make a model or make a full scale pump.
YOU can make the differerence!
Step 1: Online Checking
You will find info in the yahoo group pulserpump and in utube and the internet glossary of pumps. Pulser pumps have been on the internet for 7 years.
I do not know of anybody who has made one even though the info is freely available. I do not know the parameters because I only made about 4 pumps on a tiny seasonal stream. 0.5 meters head and 500 liters per minute max flow.
Pulser pumps might work better with larger head and flow. This is likely.
But if nobody ever trys, nobody will ever know!
Making a model and putting it online is the first step to acceptence.
Will you do it?