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Demonstration of Super Cooled Ice as a Phase Change Material Heat Sink for Portable Life Support SystemsA phase change material (PCM) heat sink using super cooled ice as a nontoxic, nonflammable PCM is being developed. The latent heat of fusion for water is approximately 70% larger than most paraffin waxes, which can provide significant mass savings. Further mass reduction is accomplished by super cooling the ice significantly below its freezing temperature for additional sensible heat storage. Expansion and contraction of the water as it freezes and melts is accommodated with the use of flexible bag and foam materials. A demonstrator unit has been designed, built, and tested to demonstrate proof of concept. Both testing and modeling results are presented along with recommendations for further development of this technology.
Document ID
20080048282
Document Type
Conference Paper
Authors
Leimkuehler, Thomas O. (Paragon Space Development Corp. AZ, United States)
Bue, Grant C. (NASA Johnson Space Center Houston, TX, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2009
Subject Category
Man/System Technology and Life Support
Report/Patent Number
JSC-CN-18028
09ICES-0283
JSC-CN-17381
Meeting Information
39th International Conference on Environmental Systems(Savannah, GA)
Distribution Limits
Public
Copyright
Other