photo by roger winstead
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The Solar Path North Carolina Association of Higher Education Facilities Officers Annual Conference March 7-8 th , 2012. Photo by Roger Winstead. NC State University and Renewables. Solar Center Continuing Education DSIRE Database Advanced Energy FREEDM Energy Management - PowerPoint PPT PresentationTRANSCRIPT
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The Solar PathNorth Carolina Association of Higher Education Facilities OfficersAnnual Conference March 7-8th, 2012
Photo by Roger Winstead.
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NC State University and Renewables
• Solar Center Continuing Education• DSIRE Database• Advanced Energy• FREEDM• Energy Management• Sustainability Office
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Solar on NC State Campus
75.6 kW
6 kW
3 kW
30 solar thermal panels + 112 pool heating collectors
8 solar thermal panels40 kW
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NEXT 40 YEARS - CLIMATE NEUTRALITY
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2008 Greenhouse Gas Inventory
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HOW NC STATE COMPARES
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Impact of Near Term Strategies
20% GHG reduction in 2015
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04/19/23
Energy Key Performance Indicator: BTUs/GSF
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2015 Goal = 30% reduction of energy use compared to 2003
2015 Goal = 30% reduction of energy use compared to 2003
ENERGY CONSERVATIONENERGY CONSERVATION
2015 Goal
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PYRAMID OF CONSERVATIONTHE POWER OF ONE
Diagram: Minnesota Power: http://www.mnpower.com/powerofone/one_home/index.htm
If behavior change can account for 5% of
electricity reduction, how much $ will NC
State save?
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Why solar?
• Student demand• Research opportunities• Public perception• Clean, renewable energy• Climate Action Plan
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Why not solar?
• High relative cost for carbon reduction• Efficiency first• Perception: New technology• Perception: Onerous process
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The Solar Path
• Use this procedure when a viable project is identified
• Contains many of the forms needed • Very similar across state funded
organizations
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Procedure Diagram
• Insert diagram here
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Frequently Asked Questions
• Glare• Liability• Wind• Roof warranty
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Solar Power for your University
• Replicate our procedure• Contact us for more information
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Intern Project: Site Suitability Survey
• Description of the project
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10 criteria
• Impediments• Orientation• Pitch• Visibility• Shade
Rooftop Access
Roof Install Date
Roof Type
Roof Area
BTUs/ GSF
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Impediments
Any object on the roof that impedes placement of a solar array either through
Physical presenceCasting of a shadow
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High Impediments - Dabney
50%< Roof Impeded
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Low Impediments - Witherspoon
25%> Roof Impeded
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Orientation
Determined along the long axis of the building
Ideal Orientation is E-W
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Carmichael gymnasium
N
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Visibility
Determined by Walk-By Site AssessmentLow = >25% of roof visibleMedium = 25% - 75% of roof visibleHigh = > 75% of roof visible
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Low Visibility - Dabney
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High visibility - Jw isenhour tennis center
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Shading
Extent to which objects cast a shadow on rooftops
Low: >25% ShadedMedium: 25% - 75% ShadedHigh: <75% Shaded
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High shading - Turner House
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Low Shading - Centennial sub station
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Rooftop Access
Availability of perimeter space for crane use
Low: If materials can’t be stored on roof or no reasonable crane accessMedium: 1-2 sides availableHigh: 3+ sides available
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Low - lEazar hall
• Materials can’t be stored on roof and no reasonable crane access points
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High - mckimmon center
• 3 crane access points
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Roof Install date & Type
• Date of most recent roof install• Type of roof currently installed
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wood deck with Asphalt shingles
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Wood deck with Slate Shingles
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Epdm
EPDM rubber stands for Ethylene Propylene Diene Monomer (M-class)
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Coal Tar Pitch
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Roof Area
• Measured in ft^2
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conclusion
• This project was almost completely student led
• There are several existing systems on NCSU’s campus
• Rooftops evaluated based on 10 criteria
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