design review
DESCRIPTION
Design Review. Jessie Holderman Beth Madsen Adam Oster. Agenda. Project learning Specifications Axiomatic design Comparisons Proposed designs Questions. Source: http://www.wallingfordvt.com/planning_&_zoning.htm. http://seniordesign.engr.uidaho.edu/first_semester/process.html. - PowerPoint PPT PresentationTRANSCRIPT
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Design ReviewJessie Holderman
Beth MadsenAdam Oster
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AgendaProject learningSpecificationsAxiomatic designComparisonsProposed designsQuestions
Source: http://www.wallingfordvt.com/planning_&_zoning.htm
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http://seniordesign.engr.uidaho.edu/first_semester/process.html
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Project LearningToured Blue Water’s facilitiesInterviewed operatorTalked with external wastewater plant engineerObserved/Analyzed current loading procedureResearch on media transport systems
Source: http://www.smart-kit.com/scategory/study-skills/
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Opportunity StatementDevelop an easy to use, safe, cost-effective method to
charge the pilot filters.
Problem StatementA problem in the current loading process of the
pilot filters is creating a safety hazard to workers, costing Blue Water excessive money, and time.
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Current loading procedureSand arrives on-site, on trailer
Sand is moved next to the filter
Filter is primed with water.
Operator loads sand into top of filter.
Forklift/Crane lifts operator and sand
Operator climbs ladderwith buckets of sand
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Specifications
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Axiomatic DesignAxiomatic design is a process used to create functional
requirements from customer needs, develop these into design parameters, and then determine process variables.
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Vertical ScrewPros ConsWill move the sand to the
height neededCan move sand at 300 SCFM
Cost- $15,000 for a carbon steel vertical screw
Difficult to set up and moveCan be a safety issueHigh maintenance costRequires a large space to
operate
Source: http://www.martinsprocket.com
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Air liftPros ConsSafe to operateLight weightCost effectiveLow maintenanceBlue Water uses technology
System requires that the lift be 50% submerged
Transfer rate is slower than desired
Must be close to filter
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Venturi System
http://www.penberthy-online.com/literature/jets/DIM%20-%201701.pdf
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Venturi SystemPros ConsMaterial does not come into
contact with moving partsVery efficientLow maintenance cost Uncomplicated designEasily removes sand from filter
Need large volume of waterRequires high pressure water
pump
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Positive Displacement Pump Pros ConsLow maintenanceLow costVersatile Can be air poweredHigh flow rate
Wear in hosesSand must be in a slurry
Source: http://www.process-controls.com/John_Brooks_Company/diaphragmpumps.htm
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Dynamic pump systemPros ConsLow costVersatileEasy to useHigh flow rates
Wear due to slurry on moving parts
Wear in hosesSand must be in a slurry
Source: http://www.heavypump.com/Productshow.asp?ArticleID=17
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Venturi System
Component Cost
Pump $600
Venturi Nozzle $100
Fittings $50
Slurry Hose $200
Fabrication Materials
$50
Total $1,000
• Flow rate of 6.9 gpm, with 10 gpm water needed to achieve this•Estimated time to charge CF3: 44 min
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Positive Displacement System Air–operated double diaphragm pump Flow rate over 4 gpm with heads of 30 ft Estimated time to charge CF3: 75 min
Component PricePump $ 800
Slurry Hose $ 200Fittings $ 50
Fabrication Materials
$ 50
Total $ 1,100
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Dynamic SystemGas-operated impeller pumpFlow rate of 158 gpm, with head of 95 ftEstimated time to charge CF3: < 2 min
Component PricePump $ 500
Slurry Hose $ 200Fittings $ 50
Fabrication Materials
$ 50
Total $ 800
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Future WorkCalculate specifications for each componentFind vendors and detailed costsCreate fabrication drawingsFabricate components or order componentsTest completed system
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Questions
Source: http://www.co.sanmateo.ca.us/smc/department/dpw/home/0,,5562541_5562587,00.html