Riaan is progressing well with his Master's project which has involved building, refining and quantifying the workings of a spiral pump. Little theory exists on these ingenious positive displacement pumps and Riaan hopes to give the end user of such a device helpful tools to assist in optimising the pump for each particular application. Powered only by the river flow, Riaan's spiral pump shows promise as a means of getting water from the river to where it is needed without burning precious fossil fuel!! Apart from the obvious application in farming it would also seem ideal for households located close to a flowing river. Riaan has gathered most of his data and is now processing this and putting pen to paper with a view to graduating in 2013.
Lots more pictures and clips at
https://www.dropbox.com/sh/39a6u5e0hfecw38/7aOWp1Cj_8
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