Technique for measuring the apparent thermal conductivity of flat insulations
Conference
·
OSTI ID:5183666
A technique for measuring the apparent thermal conductivity, lambda*, of flat insulations - either batt or loose - is described. This technique employs an electrically heated flat Nichrome-screen wire sandwiched between two samples. Results from a limited experimental test are described and compared with results from a pipe insulation tester. Thermal modeling of this system shows that accurate measurements with lambda* down to 0.01 W/m K and insulation thicknesses below 0.089 m (3 1/2 in.) should be straightforward. Measurement of lambda* for material as thick as 0.305 m (12 in.) should also be possible with a lateral guard scheme to reduce heat flow along the screen wire heater. 9 figures.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5183666
- Report Number(s):
- CONF-8106198-6; ON: DE82017502
- Resource Relation:
- Conference: 17. ITCC conference, Gaithersburg, MD, USA, 15 Jun 1981; Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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