Aging of polyurethane foam insulation in simulated refrigerator walls
Laboratory data are presented on the thermal conductivity of polyurethane foam insulation in composite test panels that simulate refrigerator walls. The test panels consisted of a steel skin, an ABS plastic liner, and a polyurethane foam core. Foam cores were produced with three different blowing agents (CFC-11, HCFC-141b, and a HCFC-142/22 blend). Periodic thermal measurements have been made on these panels over a three and one half year period in an effort to detect aging processes. Data obtained on foam encased in the panels were compared with measurements on thin foam slices that were removed from similar panels. The data show that the encapsulation of the foam in the solid boundary materials greatly reduces the aging rate. The plan is presented for a follow-on project that is being conducted on the aging of foams blown with HCFC-141b, HFC-134a, HFC-245fa, and cyclopentane.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States); Environmental Protection Agency, Washington, DC (United States)
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 634148
- Report Number(s):
- ORNL/CP-94345; CONF-971151-; ON: DE98000332; BR: EC1206000; TRN: AHC2DT01%%159
- Resource Relation:
- Conference: International conference on ozone protection technologies, Baltimore, MD (United States), 12-13 Nov 1997; Other Information: PBD: Oct 1997
- Country of Publication:
- United States
- Language:
- English
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