Jospa Blog http://www.jospa.ie/blog Just another WordPress weblog Mon, 12 Oct 2009 15:55:20 +0000 http://backend.userland.com/rss092 en Chuter improvements and adjustments – test series E, October 5th and 6th 2009 at SeaPower Ltd., Galway. This short video shows the newly improved Chuter anchored rather than attached to the tank as before.  Using shoestring equipment like plastic bottles, cistern floats & elastic band the Chuter performance is optimized by varying the centre of buoyancy, anchor point, etc to provide just what is required - alternate ... http://www.jospa.ie/blog/?p=69 Comments on the chuter and the video The chuter - see picture - has side walls held apart at the front by a piece of wood (brown colour). It has no bottom, and water and air are fed in to it ONLY above the 'knife' level. The oscillation of the chuter can be adjusted - see picture ... http://www.jospa.ie/blog/?p=52 Test to assess ability of “chuter” to feed air and water Background Readers of the progress of the ITC will be aware that the principle of the waves moving the water and air along inside the tubes seems to work well, but we hadn't found a reliable unaided way to feed the air and water into the tube. This was a critical ... http://www.jospa.ie/blog/?p=42 Gérard from France asks of our plans  Question Gerard Labadie To: <info@jospa.ie> Subject: News about the irish tube compressor Hello I run a modest website about wave energy, algae and so. http://hydro.blogiwi.com/ I would like to know if you have some plans about testing a prototype soon, or what is the next stage. I plan to do an article about the Irish Tube Compressor. Regards Gérard   Response   Thank you ... http://www.jospa.ie/blog/?p=39 An account of the April tank test is posted below - the background noise is the wave generator. This test was most encouraging and we believe we are well on the way towards a robust proof of concept. Wikipedia defines this as “Proof of concept is a short and/or incomplete realization (or synopsis) of a certain method or idea(s) to demonstrate its feasibility, or a demonstration in principle, whose purpose is to verify that some concept or theory is probably capable of exploitation in a useful manner. A related (somewhat synonymous) term is “proof of principle”. IRISH TUBE COMPRESSOR SCOPING TEST AT HMRC 10.35 WEDNESDAY APRIL 8TH 2009 SUMMARY   The diameter of readily available tube for test is limited: JOSPA has been using a 50mm dia tube. The question of whether this could work in the tank at HMRC had arisen, and the development had been stuck for ... http://www.jospa.ie/blog/?p=34 Picture of the home-made oscillating water column used http://www.jospa.ie/blog/?p=30 Here’s a picture of our home-made oscillating water column http://www.jospa.ie/blog/?p=27 A test to prepare for the important test - conducted ‘by hand’ to improve the chances of success of a more engineered test - mixed results. Preliminary report Test (3a) HMRC flume tank UCC We (Tom and I) ran a very simple trial today in the flume tank. It was crude and preliminary and the method was simply to splash water at regular intervals, synchronizing as well as we could with the passing of the waves, ... http://www.jospa.ie/blog/?p=8