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Steady-state thermal performance evaluation of steel-framed wall assembly with local foam insulation

: Kosny, J.; Biswas, K.; Childs, P.

American Society of Heating, Refrigerating and Air-Conditioning Engineers -ASHRAE-, Atlanta/Ga.:
Buildings XI, Thermal Performance of the Exterior Envelopes of Whole Buildings XI 2010. Proceedings. CD-ROM : December 5-9, 2010, Clearwater Beach, Florida
Atlanta, GA: ASHRAE, 2010
ISBN: 978-1-933742-89-2
Buildings Conference <11, 2010, Clearwater Beach/Fla.>
International Conference on Thermal Performance of the Exterior Envelopes of Whole Buildings <11, 2010, Clearwater Beach/Fla.>
Conference Paper
Fraunhofer CSE ()

During January and May, 2009, two configurations of steel-framed walls constructed with conventional 2 × 4 steel studs insulated with either R-19, approximately 14 cm (5.5 in.) thick, or R-13, approximately 9 cm (3.5 in.) thick, fiberglass insulation batts were tested in the Oak Ridge National Laboratory (ORNL) guarded hot box using the ASTM Standard C1363 test procedure. The first test wall used conventional 2 × 4 steel studs insulated with 2.5 cm (1 in.) thick foam profiles, called stud-snugglers. These stud-snugglers converted the 2 × 4 wall assembly into a 2 × 6 assembly, allowing application of R-19 fiberglass insulation. The second wall tested for comparison was a conventional 2 × 4 steel stud wall using R-13 insulation batts. Furthermore, numerical simulations were performed in order to evaluate the steady-state thermal performance of various wood-and steel-framed wall assemblies. The effects of adding the stud-snugglers to the wood and steel studs were also inve stigated numerically. Different combinations of insulation and framing factor were used in the simulations.