Introduction RoleTeam MemberSpecialization Team LeaderZach
DombiElectrical CommunicationPeter WorleyMechanical
DocumentationScott ValentineElectrical FinancialVincent
MazzoneChemical Team Members
Slide 4
Background Information: Problem Model Home Stability Health
Living Condition Residential Electricity Lights Cellphone
Television Fans Refrigerator
Slide 5
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
Slide 6
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
Slide 7
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
Slide 8
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
Slide 9
Pre-Trip Electrical Design Panel 180 W Safety box Battery - 105
Ah Charge Controller - 15 A Inverter - 450 W Light bulbs with
strings
Slide 10
Pre-Trip Mechanical Design Pole mount Security bolts Concrete
foundation
Slide 11
In-Country Implementation La Bonanza Rural, impoverished
community House does not have its own grid connection
Slide 12
The House Living room, kitchen, bedroom 2 lights, one outlet
Unsafe
Slide 13
Electrical Box Protection from environment Child safety
Ventilation
Slide 14
Mount Frame Scrap metal Welded Bolt panel to frame
Slide 15
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.
Slide 16
Foundation 2 foot diameter by 4 feet deep hole Concrete with
rebar Ingenious Dzwonczyk Collar
Slide 17
Final Assembly
Slide 18
Location of Electrical Components within Home
Slide 19
Electrical Wiring Four Outlets Four Light fixtures One
circuit
Slide 20
General Wiring Diagram
Slide 21
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
Slide 22
Objectives Achieved and Deliverables Six main objectives/goals
Local parts versus low cost Maintenance manual and a day of
education Under budget
Slide 23
Sustainability and Ownership All major parts bought locally
Minor parts can be purchased in country Aiding in the installation
Education seminar
Slide 24
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%
Slide 26
Non-Economic Analysis Grid power erratic (frequent power
outages) Remote villages unable to be grid-tied o Islands o
Hill/mountain sides
Slide 27
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
Slide 28
Acknowledgments Roger and Mariant Larry and Angie Overholt and
WGM Engineering Education Innovation Center Solar Education and
Outreach: Jason Mulligan Wiring Lab: Mike Lichtensteiger