Lentil SorterWhat is the scope?What is the customer need?Proposed SolutionSlide 5Existing ProductQuestions?Lentil SorterGreen TeamSection BWhat is the scope? 32.9 million bushels of dry beans produced in U.S. in 2001 (bad year) 100 million bushels of lentils/yr produced worldwide Many varietiesWhat is the customer need?Harvested lentils must be sorted from chaffLentils must be separated on size and quality‘Good’ lentils get 10-12 cents per bushel‘Bad’ lentils get 2 cents per bushelProposed Solution•For air: (vA)1 = ( vA)2•Assume = 0•Therefore: (vA)1 = (vA)2•From geometry: A = (htan•Therefore v1h12 = v2h22•v1/v2 = (h2/h1)2•Based on our values of v, we find h2/h1 = 1.011Compressed Airh1h2A2A1Proposed Solution•“Good” lentils = 772 kg/m^3•“Bad” lentils = 709 kg/m^3•From K. Carman:•Vt = 10.79 +.04Mc•Bd=1212 - 8.94McEquating and solving for Bd yields:Vt, good = 12.76 m/sVt, bad = 13.04 m/sThis does not make sense!Compressed AirGood LentilsChaff∆h∆sBad LentilsExisting ProductVibrating air tablesSorts lentils with a maximum capacity rate of 500 bushels per hourSource: http://www.olivermfgco.com/master.htmQuestions?Green Team B-Nut & Seed Oil Press-Lentil
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