IanJ Posted August 5, 2005 Share Posted August 5, 2005 With so many locally made Beckett skimmers in Singapore, who will be the first to use their skills and produce a good recirculating needle wheel skimmer? Quote Link to comment Share on other sites More sharing options...
SRC Member ozy Posted August 5, 2005 SRC Member Share Posted August 5, 2005 Already have. http://www.sgreefclub.com/forum/index.php?showtopic=34631 Quote Link to comment Share on other sites More sharing options...
SRC Member weisoon Posted August 5, 2005 SRC Member Share Posted August 5, 2005 Few tricks to good needlewheel skimmers: 1. Good transition from main body to riser tube. Most people have problem or cannot make a good curved transition. To make a good one will cost more to fabricate or end up making one that is not good enough. 2. The needle wheel pump and the most important thing in the skimmer: the needlewheel. Using a off the shelve pump and put in a needlewheel is still not good enough, due to reasons which I try not to post. The design of the needlewheel is also important. Have to understand a bit of fluid dynamics to grasp how well a needlewheel should work. The rest are quite standard work ( body, pipings, fittings etc) Quote Link to comment Share on other sites More sharing options...
IanJ Posted August 5, 2005 Author Share Posted August 5, 2005 Not me - just wondering if anyone is up to the challange and become a name in the global market. I think more work is needed on the design of the needlewheel, particularly in terms of the venturi/air intake. Most i have seen are rather crude affairs. Quote Link to comment Share on other sites More sharing options...
SRC Member weisoon Posted August 5, 2005 SRC Member Share Posted August 5, 2005 particularly in terms of the venturi/air intake. Most i have seen are rather crude affairs. Good to know how the Bernoulli's principle can be applied to the venturi intake. Bernoulli's principle: At points in a moving fluid where the potential energy changes is very small, or zero as in flow through a horizontal pipe, the pressure is low where the velocity is high; conversely, the pressure is high where the velocity is low. Quote Link to comment Share on other sites More sharing options...
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