Badania ultradźwiękowe wielogłowicowe elementów konstrukcji Bolesław AUGUSTYNIAK.
Performance Evaluation of an Installed Insulated Tension System M.J. Augustyniak, T.D. McCoy, T.M....
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Transcript of Performance Evaluation of an Installed Insulated Tension System M.J. Augustyniak, T.D. McCoy, T.M....
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Performance Evaluation of an Installed Insulated Tension
System
M.J. Augustyniak, T.D. McCoy, T.M. Connell and S. Gellin
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Dedmon Center, Radford University, Radford, VA USA
Original Construction
•Built 1987
•Air supported fabric with liner
•Fabric coverage: Gym – 4800 m2
Pool – 560 m2
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Problems
•High energy consumption (air conditioning, supporting the air supported roof)
•Poor acoustics in the gym; could not use as a multi-use facility
•Condensation on the pool liner, causing dirt stains
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New Build Requirements
•State code required a level of insulation not met by old system (R = 12) (0.47 W/m2-°K)
•New insulated system will maintain the natural daylight
•In gym, air supported system replaced by a truss support structure with the insulated fabric system as cladding; flexibility required to protect roof supports
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Properties of New Insulated System
•Top layer: PTFE coated fiberglass
•Bottom layer (liner): PTFE coated fiberglass; special vapor barrier for pool
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Properties of New Insulated System (continued)
•Inside: Aerogel blanket- Lightest solid material on earth- Hydrophobic- Lowest thermal conductivity of any
solid- Translucent- Stable properties- Made from silica- Re-usable
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Gym: Thermal Performance
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Gym: Lighting
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Gym: Acoustical Performance
Conventional Construction vs. Tensotherm Roof(Occupied)
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Pool: Lighting
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Conclusions
•Energy costs significantly reduced
•Lighting more than adequate
•Acoustic performance in gym allows for multi-function usage
•Fabric can now compete with conventional roofing systems in cold weather climates!
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Thank you!