Florida Solar Energy Center

FLORIDA SOLAR ENERGY CENTER (FSEC)

• Research Institute of the University of Central Florida

• Located in Cocoa, FL• Nationally recognized for their work in:

– Energy efficiency and building science– Solar thermal systems– Photovoltaic systems– Hydrogen energy– Indoor air quality– Advanced HVAC systems– Pollutant detoxification

FSEC Impacts

• Florida Energy Gauge Program– Florida Department of Community Affairs

• Energy Star New Homes Program– EPA

• Energy-Efficient Industrialized Housing Program– US Department of Energy

• Florida Green Building Coalition• USGBC / LEED

Energy Efficiency Studies With Metal Roofing

• Flexible Roof Facility (FRF)

• New Smyrna Beach Zero Energy Home

• Florida Power and Light/Habitat for Humanity Homes

Flexible Roof Facility (FRF)

• Located in Cocoa, Florida

• Compares average Mid-Attic High Temperatures of five roof systems each year

FRF 1999 ResultsAverage Mid-Attic Temps

• Average Outside Temp: 89.1 degrees

• White Aluminum Shake: 92.9 degrees

• White “S” Tile: 93.9 degrees

• White Standing Seam: 98.8 degrees

• Red “S” Tile: 109.8 degrees

• Black Shingle: 122.7 degrees

FRF 2000 ResultsAverage Mid-Attic Temps

• Average Outside Temp: 89.4 degrees

• White “S” Tile: 95.5 degrees

• White Standing Seam: 98.5 degrees

• Brown Aluminum Shake: 102.9 degrees

• Red “S” Tile: 110.0 degrees

• Black Shingle: 121.4 degrees

FRF 2001 ResultsAverage Mid-Attic Temps

• Average Outside Temp: 87.8 degrees

• Reflective Pigment Brown Aluminum Shake: 98.4 degrees

• White “S” Tile: 99.1 degrees

• White Standing Seam: 102.2 degrees

• Red “S” Tile: 107.9 degrees

• Black Shingle: 119.7 degrees

FRF 2002 ResultsAverage Mid-Attic Temps

• Average Outside Temp: 85.9 degrees

• Ivory Aluminum Shake: 93.3 degrees

• White Standing Seam: 93.7 degrees

• Galvalume 5V Crimp: 97.1 degrees

• Galvanized 5V Crimp: 99.4 degrees

• Black Shingle: 116.7 degrees

New Smyrna Beach Zero Energy Home

• White Standing Seam Roof– Light-colored walls, large overhangs

• Integrated Roof-Mounted Photovoltaic System• July 20, 2004 Test Data

– Ambient Temperature: 77.1 degrees– Attic Temperature: 78 degrees– Bottom of Decking Temperature: 78.5 degrees– Roof Surface Temperature: 82.5 degrees

• Website to access energy performance data: http://www.logger.fsec.ucf.edu/cgi-bin/wg40.exe?user=ZEHDATA

FP & L / Habitat Homes• Executive Summary:

http://www.fsec.ucf.edu/Bldg/pubs/coolroof/index.htm

• Seven side-by-side identical homes in Fort Myers with the following roof systems:– Standard dark shingles– Light colored shingles– Standard dark shingles with R-19 insulation and sealed

attic– White “S” tile– White flat tile– Terra-cotta “S” tile– White standing seam

FP & L / Habitat Homes

• Cooling savings– Standard dark shingles (Control)– Terra-cotta “S” tile – 3% reduction– Light colored shingles -- 4% reduction– Standard dark shingles with R-19 insulation

and sealed attic – 9% reduction– White flat tile – 17% reduction– White “S” tile – 20% reduction– White standing seam – 23% reduction