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TECHNICAL PAPERS: Gas Turbines: Heat Transfer

Evaluation of the Cross Corrugated and Some Other Candidate Heat Transfer Surfaces for Microturbine Recuperators

[+] Author and Article Information
E. Utriainen, B. Sundén

Division of Heat Transfer, Lund Institute of Technology, Box 118, 22100 Lund, Sweden

J. Eng. Gas Turbines Power 124(3), 550-560 (Jun 19, 2002) (11 pages) doi:10.1115/1.1456093 History: Received July 01, 2000; Revised September 01, 2001; Online June 19, 2002
Copyright © 2002 by ASME
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References

Figures

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Annular recuperator of plate-fin surface type (from Oswald 2)
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Annular recuperator of primary surface type (from McDonald 1)
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Nusselt numbers and Nusselt number least square fits versus Reynolds number for some representative heat transfer surfaces
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Friction factors and friction factor least-square fits versus Reynolds number for some representative heat transfer surfaces
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The cross corrugated (CC) surface
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The corrugated undulated (CU) surface (from Stasiek 12)
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The offset strip-fin surface
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The cross wavy (CW) surface
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Comparison of thermal performance in published literature for a CC surface with θ=60 deg and P/Hi≈4
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Comparison of hydraulic performance in published literature for a CC surface with θ=60 deg and P/Hi≈4
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Approximate occurrence of transition from laminar to turbulent flow, extracted from Thonon et al. 24
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The volume goodness diagram
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The area goodness diagram
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Volume of the recuperator core, using the CC4-60 surface, for different sizes of the hydraulic diameter
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Volume of the recuperator core, using the CC4-60 surface, for different total pressure drop in the matrix
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Results of design calculations, volume of recuperator matrix
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Results of design calculations, weight of recuperator matrix
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Cube-shaped recuperator concept
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Annular recuperator cartridge (from McDonald 1)
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Comparison of specific volume of some representative recuperators from present study with operating recuperators. (Diagram used with permission of C. F. McDonald, La Jolla, CA, USA.)
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Nonsymmetric CC surface passages to compensate for the mal distribution of pressure drop between gas and air sides

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