The structural and thermal feasibility of a self-supporting sandwich panel for energy efficient residential roof applications is assessed. The assessment is limited to symmetric sandwich panels comprising two face sheets and an insulating core. Feasible panel designs are presented for loading conditions, corresponding to southern and northern climates in the United States. The base case panel is 5.5 m long for a nominal 4.6 m horizontal span and an 8/12 roof pitch. Face sheet materials considered are oriented strand board, steel, and fiber reinforced plastic. Core materials considered are expanded polystyrene, extruded polystyrene, polyurethane and poly(vinyl-chloride) foams. A wide range of material options meet building code limits on deflection and weight and prevent face sheet fracture and buckling, and core shear failure. Panels are identified that have structural depths similar to conventional wood rafter construction. Shortening the overall panel length provides greater choice in the use of materials and decreases the required panel thickness. Suggestions for improved panel designs address uncertainty in the ability of the plastic core to withstand long term loading over the expected life of residential buildings.
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ASME 2005 International Solar Energy Conference
August 6–12, 2005
Orlando, Florida, USA
Conference Sponsors:
- Solar Energy Division
ISBN:
0-7918-4737-3
PROCEEDINGS PAPER
Analysis of Sandwich Panels for an Energy Efficient and Self-Supporting Residential Roof
Daniel Thomas,
Daniel Thomas
University of Minnesota, Minneapolis, MN
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Susan C. Mantell,
Susan C. Mantell
University of Minnesota, Minneapolis, MN
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Jane H. Davidson,
Jane H. Davidson
University of Minnesota, Minneapolis, MN
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Louise F. Goldberg,
Louise F. Goldberg
University of Minnesota, Minneapolis, MN
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John Carmody
John Carmody
University of Minnesota, Minneapolis, MN
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Daniel Thomas
University of Minnesota, Minneapolis, MN
Susan C. Mantell
University of Minnesota, Minneapolis, MN
Jane H. Davidson
University of Minnesota, Minneapolis, MN
Louise F. Goldberg
University of Minnesota, Minneapolis, MN
John Carmody
University of Minnesota, Minneapolis, MN
Paper No:
ISEC2005-76003, pp. 1-14; 14 pages
Published Online:
October 15, 2008
Citation
Thomas, D, Mantell, SC, Davidson, JH, Goldberg, LF, & Carmody, J. "Analysis of Sandwich Panels for an Energy Efficient and Self-Supporting Residential Roof." Proceedings of the ASME 2005 International Solar Energy Conference. Solar Energy. Orlando, Florida, USA. August 6–12, 2005. pp. 1-14. ASME. https://doi.org/10.1115/ISEC2005-76003
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