ANALYSIS OF THE THERMAL RESISTANCE OF SILICA FOAM

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Authors
  1. Uglene, W.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Mustang Survival Research Div, Richmond BC (CAN)
Abstract
The thermal resistance of an experimental silica foam, when dry in air at atmospheric pressure, was measured using a custom-built apparatus. The average thermal resistnace of the silica foam was 0.0253 + or - 0.0013 m square-K-W 1(-). The average thickness of the foam samples was 2.48 + or - 0.31 mm. Using the average thickness and thermal resistance, the silica foam's thermal conductivity was calculated as 0.0983 + or - 0.0054 W-m 1(-)-K 1(-). The insulation of heavy weave Rubatex (TRADEMARK) G-231-N neoprene, the material currently used on the Canadian Forces diver's dry suit, was also measured using the same experimental apparatus. The thermal conductivity of Rubatex (TRADEMARK) G-231-N was calculated as 0.0646 + or - 0.0016 W-m 1(-)-K 1(-). This is between 20.4 to 22.6% higher than that measured by other investigators using different equipement. The thermal conductivity of both heavy and regular weave Rubatex (TRADEMARK) G-231-N was re-measured using a different heat flow measurement apparatus. The thermal conductivity of heavy and regular wave Rubatex (TRADEMARK) G-231-N neoprene was 0.0548 + or - 0.0007 and 0.0565 + or - 0.0007 W-m 1(-)-K 1(-) respectively. These values are the same as those measured in the other studies. TRUNCATED
Keywords
Thermal conductivity;Silica foam;Thermal protection;Dry suits
Report Number
DCIEM-98-CR-41;98004 — Contactor Report (Final)
Date of publication
04 May 1998
Number of Pages
18
DSTKIM No
98-02765
CANDIS No
509680
Format(s):
Hardcopy;Document Image stored on Optical Disk

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