Steady-state and transient results on insulation materials

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The Unguarded Thin-Heater Apparatus (UTHA, ASTM C 1114) was used to determine the thermal conductivity (k), specific heat (C), and thermal diffusivity ({alpha}) of selected building materials from 24 to 50{degree}C. Steady-state and transient measurements yielded data on four types of material: gypsum wall board containing 0, 15, and 30 wt % wax; calcium silicate insulations with densities ({rho}) of 307, 444, and 605 kg/m{sup 3}; three wood products: southern yellow pine flooring (575 kg/m{sup 3}), Douglas fir plywood (501 kg/m{sup 3}), and white spruce flooring (452 kg/m{sup 3}); and two cellular plastic foams: extruded polystyrene (30 kg/m{sup 3}) blown ... continued below

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Pages: (22 p)

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Graves, R.S.; Yarbrough, D.W.; McElroy, D.L. & Fine, H.A. January 1, 1991.

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The Unguarded Thin-Heater Apparatus (UTHA, ASTM C 1114) was used to determine the thermal conductivity (k), specific heat (C), and thermal diffusivity ({alpha}) of selected building materials from 24 to 50{degree}C. Steady-state and transient measurements yielded data on four types of material: gypsum wall board containing 0, 15, and 30 wt % wax; calcium silicate insulations with densities ({rho}) of 307, 444, and 605 kg/m{sup 3}; three wood products: southern yellow pine flooring (575 kg/m{sup 3}), Douglas fir plywood (501 kg/m{sup 3}), and white spruce flooring (452 kg/m{sup 3}); and two cellular plastic foams: extruded polystyrene (30 kg/m{sup 3}) blown with HCFC-142b and polyisocyanurate rigid board (30.2 kg/m{sup 3}) blown with CFC-11. The extruded polystyrene was measured several times after production (25 days, 45 days, 74 days, 131 days, and 227 days). The UTHA is an absolute technique that yields k with an uncertainty of less than {plus minus}2% as determined by modeling, by determinate error analyses, and by use of Standard Reference Materials SRM-1450b and SRM-1451. 37 refs., 5 figs., 10 tabs.

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Pages: (22 p)

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OSTI; NTIS; GPO Dep.

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  • 2. symposium on insulation materials: testing and applications, Gatlinburg, TN (United States), 10-12 Oct 1991

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  • Other: DE91006334
  • Report No.: CONF-911038-3
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 5565447
  • Archival Resource Key: ark:/67531/metadc1093720

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  • January 1, 1991

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  • Feb. 10, 2018, 10:06 p.m.

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  • Feb. 26, 2018, 6:54 p.m.

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Graves, R.S.; Yarbrough, D.W.; McElroy, D.L. & Fine, H.A. Steady-state and transient results on insulation materials, article, January 1, 1991; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1093720/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.