Technical Assessment of Dry Ice Limits on Aircraft (2013) / Chapter Skim
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From page 26... ...
26 package was filled with dry ice pellets, the top was closed and taped, and the package was placed on the scale. The weight was recorded manually at intervals along with the time and, in some tests, one or more inside temperatures.
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From page 27... ...
27 other constraints. It should be noted that although all the packages were new and unused, the corrugated cardboard used to construct the packages was not perfectly flat, and not all the packages were perfectly square.
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28 exposed to the free air convection and radiant heat exchange that would obtain for a single package for which these processes are effective means of heat transfer. For this configuration, the measured area-normalized sublimation rates were in the range of 130 to 160 g/m2 ?
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From page 29... ...
29 Discussion of Experimental Test Results General Observations In Figure 6 and Figure 7, the weight loss with time is a smooth downward curve. Both these figures show the normalized area loss as a relatively constant number between 140 and 170 g/m2 ?
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From page 30... ...
30 the DT for a typical ULD package is about half the DT for a typical dry ice carton, the overall thermal conductivity of the ULD is about twice the thermal conductivity of the EPS in a typical dry ice package, and the two factors cancel out. If a ULD were maintained at the -78°C sublimation temperature of dry ice, then an adjustment would need to be included in the correlation.
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