Steady-state and transient results on insulation materials
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.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5565447
- Report Number(s):
- CONF-911038-3; ON: DE91006334
- Resource Relation:
- Conference: 2. symposium on insulation materials: testing and applications, Gatlinburg, TN (United States), 10-12 Oct 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CALCIUM SILICATES
SPECIFIC HEAT
THERMAL CONDUCTIVITY
GYPSUM
PLASTIC FOAMS
WOOD
BUILDING MATERIALS
THERMAL INSULATION
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM SULFATES
COLLOIDS
DISPERSIONS
FOAMS
MATERIALS
MINERALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYMERS
SILICATES
SILICON COMPOUNDS
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
THERMODYNAMIC PROPERTIES
360603* - Materials- Properties