Pulsed Single-Blow Regenerator Testing

Paper #:
  • 929386

Published:
  • 1992-08-03
Citation:
Oldson, J., Knowles, T., and Rauch, J., "Pulsed Single-Blow Regenerator Testing," SAE Technical Paper 929386, 1992, https://doi.org/10.4271/929386.
Pages:
5
Abstract:
A 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 1-D 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.
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