needs identification, product specification and project plan belsheim joshua, francis travis, he...
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Needs Identification, Product Specification and Project Plan
Belsheim Joshua, Francis Travis, He Jiayang, Moehling Anthony, Liu Pengyan, Ziemkowski Micah
October 7, 2013
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Presentation Outline
• Introduction
• Needs
• Project goals
• Operating environment
• Objectives
• Constraints
2Micah
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Introduction to Client
• Dr. Acker
• Professor of Mechanical Engineering at NAU
• Research
• Renewable Energy Systems
• Statistical Thermodynamics
• Energy Systems and Integration
• Director of NAU Sustainable Energy Solutions Group
Dr. Tom Acker
3Pengyan
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Background
• What is the current solar panel system?
• General information
(No. of PV panel; Size; Location)
• Why is a solar tracking system necessary?
• How does the solar tracking system work?
• Increase the efficiency due to the increasing incident radiation rate.
4Pengyan
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Needs
• Tracking system for 4 solar panels up at the shack
• Current solar tracking systems are
• Expensive
• Unreliable
• Hard to maintain
5Joshua
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Project Goals
• To design and construct a more reliable solar tracking device.
• This device will capture solar energy and convert it to useable energy.
• The system will be measured for efficiency after completion.
6Joshua
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Operating Environment
• Target location: “The Shack,” Flagstaff, AZ
• Target location is sunny during the day but shady in the morning and evenings.
• System is to be used year round, so it must withstand snow, rain, wind, etc.
• Design can be implemented in various locations (i.e. nationwide).
7Travis
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Solar Panels located up at the “Shack”
8Travis
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Objectives
• It should to be inexpensive.
• The system should increase the energy efficiency.
• The solar panel tracking system should require low maintenance.
• The tracking system should be easy to manufacture.
• The system should have a high build quality.
9Anthony
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Secondary Objectives
• The structure should handle the different weights of solar panels.
• There should be a way to remove snow.
10Anthony
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Objectives Objective Measurement Basis Units
Inexpensive Unit cost of production Dollars
Efficiency Amount of useable amps per midday sun
Amp/hour
Low Maintenance Time until first replacement parts
Days
Manufacturability Number of moving parts Parts
Build Quality Stress times strain N/m2
Snow Removal Area with out snow m2
Handle different weights The weights of the solar panels N
11Anthony
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Jiayang 12
Solar Tracker QFD Matrix
Wei
ghte
d Im
port
ance
Vol
ume
Mat
eria
l Stre
ngth
(YS)
Mat
eria
l Den
sity
Wei
ght
You
ng's
Mod
ule
Max
imum
Def
lect
ion
Mat
eria
l Typ
e
Deg
ree
of F
reed
om
Cos
t
Res
pons
e T
ime
1. Light Weight 7 x x x x2. Time to Manufacture 8 x x3. Structural Simplicity 8 x x4. Low Maintenance 10 x x x x5. Build Quality 10 x x x6. Efficiency 9 x x7. Does Not Rust 8 x8. Snow Removal 5 x x9. Survive Strong Wind 8 x x x10.Inexpensive 10 x
Unit of Measure m^3 N/m2 kg/m^3 kg N/m2 m ul* ul* $ minTechnical Target
* = unitless by method
Obej
ctiv
es
Specifications
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Constraints
• Should be light weight
• Should be built under budget
• Should work within a limited space
• Panels should not shade each other after adjusting
• Must be strong enough to hold the snow on the panel
• Should survive strong wind
13Jiayang
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Conclusion
• Problem Definition
• Recognizing the Need
• Objectives and Constraints
• Clients
14Micah
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References
• http://nau.edu/Sustainability-360/Sustainability-Experts/Thomas-Acker/
15Micah
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Questions?
16Micah