Post on 30-Dec-2015
description
The Solar PathNorth Carolina Association of Higher Education Facilities OfficersAnnual Conference March 7-8th, 2012
Photo by Roger Winstead.
NC State University and Renewables
• Solar Center Continuing Education• DSIRE Database• Advanced Energy• FREEDM• Energy Management• Sustainability Office
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
NEXT 40 YEARS - CLIMATE NEUTRALITY
2008 Greenhouse Gas Inventory
HOW NC STATE COMPARES
Impact of Near Term Strategies
20% GHG reduction in 2015
04/19/23
Energy Key Performance Indicator: BTUs/GSF
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
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?
Why solar?
• Student demand• Research opportunities• Public perception• Clean, renewable energy• Climate Action Plan
Why not solar?
• High relative cost for carbon reduction• Efficiency first• Perception: New technology• Perception: Onerous process
The Solar Path
• Use this procedure when a viable project is identified
• Contains many of the forms needed • Very similar across state funded
organizations
Procedure Diagram
• Insert diagram here
Frequently Asked Questions
• Glare• Liability• Wind• Roof warranty
Solar Power for your University
• Replicate our procedure• Contact us for more information
Intern Project: Site Suitability Survey
• Description of the project
10 criteria
• Impediments• Orientation• Pitch• Visibility• Shade
Rooftop Access
Roof Install Date
Roof Type
Roof Area
BTUs/ GSF
Impediments
Any object on the roof that impedes placement of a solar array either through
Physical presenceCasting of a shadow
High Impediments - Dabney
50%< Roof Impeded
Low Impediments - Witherspoon
25%> Roof Impeded
Orientation
Determined along the long axis of the building
Ideal Orientation is E-W
Carmichael gymnasium
N
Visibility
Determined by Walk-By Site AssessmentLow = >25% of roof visibleMedium = 25% - 75% of roof visibleHigh = > 75% of roof visible
Low Visibility - Dabney
High visibility - Jw isenhour tennis center
Shading
Extent to which objects cast a shadow on rooftops
Low: >25% ShadedMedium: 25% - 75% ShadedHigh: <75% Shaded
High shading - Turner House
Low Shading - Centennial sub station
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
Low - lEazar hall
• Materials can’t be stored on roof and no reasonable crane access points
High - mckimmon center
• 3 crane access points
Roof Install date & Type
• Date of most recent roof install• Type of roof currently installed
wood deck with Asphalt shingles
Wood deck with Slate Shingles
Epdm
EPDM rubber stands for Ethylene Propylene Diene Monomer (M-class)
Coal Tar Pitch
Roof Area
• Measured in ft^2
conclusion
• This project was almost completely student led
• There are several existing systems on NCSU’s campus
• Rooftops evaluated based on 10 criteria
conclusion
John Galloway - jwgallow@ncsu.eduAlex Crouse - ascrouse@ncsu.eduLiz Bowen - Liz_Bowen@ncsu.edu
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