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Pulsed single-blow regenerator testingA pulsed single-blow method has been developed for testing of Stirling regenerator materials performance. The method uses a tubular flow arrangement with a steady gas flow passing through a regenerator matrix sample that packs the flow channel for a short distance. A wire grid heater spanning the gas flow channel is used to heat a plug of gas by approximately 2 K for approximately 350 ms. Foil thermocouples monitor the gas temperature entering and leaving the sample. Data analysis based on a 1D incompressible-flow thermal model allows the extraction of Stanton number. A figure of merit involving heat transfer and pressure drop is used to present results for steel screens and steel felt. The observations show a lower figure of merit for the materials tested than is expected based on correlations obtained by other methods.
Document ID
19930042084
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Oldson, J. C.
(NASA Lewis Research Center Cleveland, OH, United States)
Knowles, T. R.
(Energy Science Labs., Inc. San Diego, CA, United States)
Rauch, J.
(Sverdrup Technology, Inc. Brook Park, OH, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: IECEC '92; Proceedings of the 27th Intersociety Energy Conversion Engineering Conference, San Diego, CA, Aug. 3-7, 1992. Vol. 5 (A93-25851 09-44)
Publisher: Society of Automotive Engineers, Inc.
Subject Category
Mechanical Engineering
Accession Number
93A26081
Funding Number(s)
CONTRACT_GRANT: NAS3-26249
Distribution Limits
Public
Copyright
Other

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