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Comparison of a pin stack to a conventional stack in a thermoacoustic prime mover

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Author
Nessler, F. Scott
Date
1994-12
Advisor
Keolian, Robert
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Abstract
This thesis compares the pin stack with a conventional rolled stack for a thermoacoustic prime mover. A pin stack is a new geometry for stacks used in thermoacoustic engines consisting of a lattice of small wires which are spaced about a thermal penetration depth apart. Computer simulations were conducted on a variety of pin stack geometries and operating parameters. Results indicate that the modeling program, DeltaE, agrees with the experimental results for conventional stacks, that the pin stack decreases viscous energy losses, and greatly increases the efficiency of the thermoacoustic engine over a large range of mean pressures. The pin stack performance was found to be more sensitive than the conventional stack to changes in thermal and viscous penetration depths of the fluid.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
URI
http://hdl.handle.net/10945/42844
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  • 1. Thesis and Dissertation Collection, all items

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    An experimental comparison of a pin stack to a conventional stack in a thermoacoustic prime mover 

    Gibson, Rodney Jay (Monterey, California. Naval Postgraduate School, 1996-06);
    This thesis is an experimental comparison of a pin stack to a conventional stack in a thermoacoustic prime mover. A thermoacoustic prime mover is a type of natural heat engine which converts a temperature gradient across ...
  • Thumbnail

    Thermoacoustic Pin Stacks 

    Keolian, Robert M. (Monterey, California. Naval Postgraduate School, 1996-06-15); NPS-PH-96-005
    This technical report describes progress building and testing a 'pin stack' during the period 01 June 1995 through 31 May 1996. The pin stack produced 18% higher acoustic pressures, reached onset at a 40% lower mean pressure, ...
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    Design of a toroidal thermoacoustic prime mover 

    Yang, Szu-Wei (Monterey, California. Naval Postgraduate School, 1995-06);
    The topic of this thesis is the design of a toroidal prime mover. The primary design tool is a MATLAB program based on a standing wave analysis of thermoacoustics. A conventional prime mover that has been well studied, was ...
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