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Development of a low temperature phase change material packageTest data obtained for a low temperature phase change material (PCM) canisters are presented. The canister was designed to provide up to 30 w-hrs of storage capacity at approximately -90 C with an overall thermal conductance which is greater than 8 w/deg C. N-heptane which is an n-paraffin and has a -90.6 C freezing point was used as the working fluid. The canister was fabricated from aluminum and has an aluminum honeycomb core. Its void volume permits service temperatures up to 70 C. Results obtained from component and system's tests indicate well defined melting and freezing points which are repeatable and within 1 C of each other. Subcooling effects are less than 0.5 C and are essentially negligible. Measured storage capacities are within 94 to 88% the theoretical.
Document ID
19770056662
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Brennan, P. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Suelau, H. J.
(B & K Engineering, Inc. Towson, Md., United States)
Mcintosh, R.
(NASA Goddard Space Flight Center Greenbelt, Md., United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1977
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 77-762
Meeting Information
Meeting: Thermophysics Conference
Location: Albuquerque, NM
Start Date: June 27, 1977
End Date: June 29, 1977
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
77A39514
Distribution Limits
Public
Copyright
Other

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