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ASTM Selected Technical Papers
Heat Transmission Measurements in Thermal Insulations
By
RP Tye
RP Tye
1
Manager
, Testing Services,
Dynatech R/D Co.
,
Cambridge, Mass. symposium chairman
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ISBN-10:
0-8031-0372-7
ISBN:
978-0-8031-0372-6
No. of Pages:
317
Publisher:
ASTM International
Publication date:
1974

Reliable values of apparent thermal conductivity have been obtained under steady-state conditions and at low temperatures (between liquid nitrogen and room temperatures) together with air flow permeability (defined according to the Darcy law) of glass fiber materials. Both sets of data were used simultaneously to calculate actual conditions of heat transfer in porous media from recent theoretical analysis. It is shown by computation of filtration Rayleigh Number from these results that it is possible to design insulating structures to minimize convective heat transfer.

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,
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,
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, and
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21.
Baker
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and
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,
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22.
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,
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and
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, No.
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23.
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and
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,
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24.
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,
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,
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26.
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,
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,
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,
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27.
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,
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,
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, and
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, Vol.
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28.
Thermal Conductivity Measurements of Insulating Materials at Cryogenic Temperatures, ASTM STP 411
,
American Society for Testing and Materials
,
1967
.
29.
Fournier
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, and
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,
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,
Proceedings
, 13th International Congress on Refrigeration,
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, Vol.
2
,
1971
, pp. 53–61.
30.
McAdams
,
W. H.
,
Heat Transmission
,
McGraw-Hill
,
New York
,
1954
.
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