Transcript of Off-Grid Solar Power System Engineering Service Learning (Engr. 4692.01S) Zach Dombi, Vincent...
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- Off-Grid Solar Power System Engineering Service Learning (Engr.
4692.01S) Zach Dombi, Vincent Mazzone Bradley Scott Valentine,
Peter Worley 5/29/2014
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- Presentation Topics 1.Project Details a.Background b.Objectives
2.Design a.Process b.Electrical c.Mechanical 3.Post-Trip Results
a.Issues Encountered b.Objectives Achieved/Deliverables
c.Sustainability and Ownership d.Cost Analysis 5.Conclusion
6.References and Acknowledgements
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- Introduction RoleTeam MemberSpecialization Team LeaderZach
DombiElectrical CommunicationPeter WorleyMechanical
DocumentationScott ValentineElectrical FinancialVincent
MazzoneChemical Team Members
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- Background Information: Problem Model Home Stability Health
Living Condition Residential Electricity Lights Cellphone
Television Fans Refrigerator
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- Background Information: Goal Vocational School Dorm Model home
plus wings 8 students Off-Grid Power Grid unreliable High rates
Long term vision Wind Power Impractical
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- Need Scope o Construct pilot off-grid solar system at local
home o Power numerous appliances o 1 day autonomy Constraints o
$1,400 budget o Local parts o Safety o Replicable design
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- Objectives Deliverables o Functioning solar system o
Information and maintenance packet o On-site testing Power levels
Completed circuit o Economic Analysis Rate of return
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- Design Process 1.Determine desired electrical devices
2.Determine energy demand 3.Size inverter - max wattage a.Max
wattage 4.Determine insolation or sun-hours/day 5.Select solar
panels a.15% inverter loss b.16% 20 year loss 6.Size batteries -
50% depth 7.Determine wire and circuit breakers
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- Pre-Trip Electrical Design Panel 180 W Safety box Battery - 105
Ah Charge Controller - 15 A Inverter - 450 W Light bulbs with
strings
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- Pre-Trip Mechanical Design Pole mount Security bolts Concrete
foundation
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- In-Country Implementation La Bonanza Rural, impoverished
community House does not have its own grid connection
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- The House Living room, kitchen, bedroom 2 lights, one outlet
Unsafe
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- Electrical Box Protection from environment Child safety
Ventilation
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- Mount Frame Scrap metal Welded Bolt panel to frame
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- Mount Pole Two galvanized canteletas welded together
Significantly cheaper than metal pole $40 vs. $100 13 feet 4 feet
in the ground 9 feet above the ground The beams were laid on each
other and welded along the seam every few feet on both sides.
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- Foundation 2 foot diameter by 4 feet deep hole Concrete with
rebar Ingenious Dzwonczyk Collar
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- Final Assembly
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- Location of Electrical Components within Home
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- Electrical Wiring Four Outlets Four Light fixtures One
circuit
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- General Wiring Diagram
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- Issues Encountered The amount of cement needed Alignment of the
bolt holes o Panel and mounting system Securing the wood platforms
A short in the system o Grounding error The iron
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- Objectives Achieved and Deliverables Six main objectives/goals
Local parts versus low cost Maintenance manual and a day of
education Under budget
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- Sustainability and Ownership All major parts bought locally
Minor parts can be purchased in country Aiding in the installation
Education seminar
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- Cost Analysis Total Cost: $1,177.23 $1053.80 in Honduras all
major solar panel components and other miscellaneous items $123.43
in United States minor items (i.e. screws, outlets, fixtures)
Install CostUtility Rate(monthly)Most Economical Grid
Connection$143if < 150 kWh: free if > 150 kWh: $0.24/kWh X
Solar System (180 W)$1,177if
- Economic Analysis If use > 200 kWh/month there is an
economic case for solar WGM compound uses ~ 220 kWh/month WGM
vocational school would use more Install Cost Energy Usage Monthly
Bill Grid Connection$143200 kWh$48 Solar System (1 kW)$4,500200 kWh
(provides) 0 Install CostSimple Pay-BackRate of Return Solar System
(1 kW)$4,5007.8 years12.8%
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- Non-Economic Analysis Grid power erratic (frequent power
outages) Remote villages unable to be grid-tied o Islands o
Hill/mountain sides
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- Conclusion Achieved goals set by scope of work Objectives
adjusted while in country to account for new information Easily
replicable if funds are able to be generated Ownership established
Viable for use in areas with no possibility of grid access in the
foreseen future
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- Acknowledgments Roger and Mariant Larry and Angie Overholt and
WGM Engineering Education Innovation Center Solar Education and
Outreach: Jason Mulligan Wiring Lab: Mike Lichtensteiger
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- References 1.
http://www.state.gov/e/eb/rls/othr/ics/2012/191162.htmhttp://www.state.gov/e/eb/rls/othr/ics/2012/191162.htm
2.
https://www.worldcityweb.com/past-events/global-connections/7808-energy-forum-ways-to-cut-energy-costs-in-latin-americahttps://www.worldcityweb.com/past-events/global-connections/7808-energy-forum-ways-to-cut-energy-costs-in-latin-america
3.
http://www.siliconsolar.com/off-grid-solar-systems.htmlhttp://www.siliconsolar.com/off-grid-solar-systems.html
4.
http://tyconpower.com/products/images/world_insolation_map_04-1250x691%20%281%29.gifhttp://tyconpower.com/products/images/world_insolation_map_04-1250x691%20%281%29.gif
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- Questions?