the view from 93,000,000 miles
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The View from 93,000,000 Miles. Carol Blevins Ormay, MA Principal, Director of Business Development Brian Turner, PE Electrical Engineer. About Us. Top 60 MEP Consulting Engineering firm Established in 1968 Specializing in energy efficient design. Recognized Expertise. - PowerPoint PPT PresentationTRANSCRIPT
The View from 93,000,000 MilesThe View from 93,000,000 Miles
Carol Blevins Ormay, MAPrincipal, Director of Business Development
Brian Turner, PEElectrical Engineer
About UsAbout Us
Top 60 MEP Consulting Engineering firm
Established in 1968
Specializing in energy efficient design
Recognized ExpertiseRecognized ExpertiseGreenbuild, TorontoEight Annual Government Building Energy Efficient Technology Workshop, ChicagoNet Zero Energy Conference, Savannah SAMEAssociation for the Advancement of Sustainability in Higher Education (AASHE), IndianapolisCouncil of Educational Facilities Planners International (CEFPI), Washington, DCSchool Building Expo, PittsburghAmerican Society of Heating, Refrigerating and Air-Conditioning Engineers’ (ASHRAE) Net Zero Conference, San FranciscoBuilding Industry Consulting Service International Annual Conference (BICSI), Las VegasASHRAE’s High Performance Schools Conference. AtlantaMidwest Healthcare Engineers, IndianapolisLightfair International in PhiladelphiaGreening the Heartland (USGBC Regional Conference), Cincinnati
National ExperienceNational Experience
Why the view from 93,000,000 miles?Why the view from 93,000,000 miles?
Learning ObjectivesLearning Objectives
To discover how public school districts are implementing Net Zero Energy principles
To learn how energy efficiency is integrated into the curriculum
To explore the various types of solar PV options
What is Net Zero?What is Net Zero?
1. Annual Net Energy Cost
2. Zero Carbon Footprint
3. Site Consumed vs. Site Produced
Annual Energy Used Expressed in kBtu/sf/yr Units = Energy Use Index (EUI)
Site Produced EnergySite Produced Energy
Net Zero – Our PhilosophyNet Zero – Our Philosophy
1. Exhaustive study of building’s energy use.
2. Set an annual energy consumption goal to create a financial model.
3. Discuss Green Power Generation.
Making Site Produced Energy PracticalMaking Site Produced Energy Practical
Net Zero – Our PhilosophyNet Zero – Our Philosophy
VS
Let’s Talk AffordabilityLet’s Talk Affordability
Net Zero – SchoolsNet Zero – Schools
Richardsville Elementary– 72,000 sf
– 349 kW solar PV
– 17.6kBtu/sf yr
– $206/sf w/solar PV
– 75% EUI Reduction
Net Zero – SchoolsNet Zero – Schools
Turkey Foot Middle School– 133,000 sf
– 22 kBtu/sf yr
– 385 kW solar PV (phase I)
– $204/sf w/solar PV
– 70% EUI Reduction
Integrating Buildings Integrating Buildings Into the CurriculumInto the Curriculum
Twenhofel Middle School - 2007Twenhofel Middle School - 2007
Madeira City Schools - 2010Madeira City Schools - 2010
Cartmell Elementary - 2011Cartmell Elementary - 2011
Richardsville Elementary - 2011Richardsville Elementary - 2011
Turkey Foot Middle SchoolTurkey Foot Middle School
Designing Turkey Foot Middle SchoolDesigning Turkey Foot Middle School
Designing Turkey Foot Middle SchoolDesigning Turkey Foot Middle School
Designing Turkey Foot Middle SchoolDesigning Turkey Foot Middle School
Turkey Foot Middle School - STEMTurkey Foot Middle School - STEM
Below are some of the questions students are currently researching about our Photovoltaic System (Solar Panels).
– When is the peak solar electric output during a day?– Is solar electric output effected by the outside temperature?– How does the solar output change due to angle of the sun?– Does humidity effect solar panel output?– How does the sun's irradiance correlate to the electrical output of solar
panels?
Students compare lab data with outside roof and weather data to see if what occurs in their classroom experiment also occurred outside on the roof top PV system. Students then make a prediction for Kwh output for our school's PV system 3 days in the future by using their experimental data and the lab / roof data they analyzed.
http://www.middlematters.com/9.html
Turkey Foot Middle School - TourTurkey Foot Middle School - Tour
http://www.youtube.com/watch?v=ojEqeveHCyc&noredirect=1
Solar PV – What’s New?Solar PV – What’s New?
174,000,000,000,000 KW174,000,000,000,000 KW
The Earth has 174 PW of available solar power!
Capacity equivalent to 300 million coal power plants!
Typical Grid-Tied SystemTypical Grid-Tied System
Photovoltaic EffectPhotovoltaic Effect
Electrons/holes migrate away from p-n junction
Different from photoelectric effect in that electrons are not ejected but are mobilized from the valence to the conduction band which forms voltage potential between contacts
Crystalline vs. Thin FilmCrystalline vs. Thin Film
High EfficiencyHeavyOutput highly dependent on temperatureMade from Silicon
Lower EfficiencyLightweightPerforms better in hot climateOften uses rare Earth metals
Photovoltaic ArraysPhotovoltaic Arrays
InvertersInverters
What do they do?• Convert DC electricity to AC electricity• Transform from <600V to 277/480 or 120/208• Sync frequency and phase to grid• Monitor performance
Choosing Panel Tilt AngleChoosing Panel Tilt Angle
Louisville, KY = 38°
West Lafayette, IN = 40°
Equator = 0°
North/South Poles = 90°
PV Capacity by YearPV Capacity by Year
PV System CostPV System Cost
Future TrendsFuture Trends
The Perfect Solar PanelThe Perfect Solar Panel
Useful ResourcesUseful Resources
PV Watts http://rredc.nrel.gov/solar/calculators/PVWATTS/version1NREL nrel.govPhoton MagazineDSIRE (Incentives by state) dsireusa.orgBerkeley Lab lbl.govNational Clearing House forEducational Facilities http://www.ncef.org/rl/impact_learning.cfm?date=2Advanced Energy Design Guide – ASHRAEIndiana incentives http://www.dsireusa.org/incentives/index.cfm?getRE=1?re=undefined&ee=1&spv=0&st=0&srp=1&state=IN
