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TECHNICAL PAPERS

Hybrid Dish/Stirling Systems: Combustor and Heat Pipe Receiver Development

[+] Author and Article Information
Doerte Laing

Institute of Technical Thermodynamics, German Aerospace Center (DLR), Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany

Magnus Pålsson

Department of Heat and Power Engineering, Lund University, P.O. Box 118, S-22100 Lund, Sweden

J. Sol. Energy Eng 124(2), 176-181 (Apr 24, 2002) (6 pages) doi:10.1115/1.1465433 History: Received May 01, 2001; Revised January 01, 2002; Online April 24, 2002
Copyright © 2002 by ASME
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References

Keck, T., Schiel, W., and Schweitzer, A., 1998, “Auf den Punkt genau,” SONNENENERGIE, Deutsche Gesellschaft für Sonnenenergie e.V., München, Germany, pp. 53–56.
Laing, D., Reusch, M., and Brost, O., 1997, “Hybrid Sodium Heat Pipe Receiver for Dish/Stirling Systems,“ Proc. 10th Int. Heat Pipe Conf., Stuttgart, Germany.
Laing, D., and Reusch, M., 1998, “Design and Test Results of First and Second Generation Hybrid Sodium Heat Pipe Receivers for Dish/Stirling Systems,” Proc. Int. Solar Energy Conf., SOLAR 98, Albuquerque, NM, pp. 403–408.
Baumüller, A., and Schiel, W., 1997, “Single Acting 10 kWe Stirling Engine. Applications and Results,“ Proc. 8th Int. Stirling Engine Conf., Ancona, Italy, pp. 559–569.
Romero, V. J., 1994, “CIRCE2/DEKGEN2: A Software Package for Facilitated Optical Analysis of 3-D Distributed Solar Energy Concentrators,“ SAND91-2238, Sandia National Labs., Albuquerque, NM.
Pålsson, M., 1997, “Design and Testing of Stirling Engine Premix CGR Combustor for Ultra Low Emissions,“ Proc. 8th Int. Stirling Engine Conf., Ancona, Italy, pp. 1–10.
Heywood, J. B., 1989, Internal Combustion Engine Fundamentals, McGraw-Hill, Singapore.
Stine, W. B., and Powell, M. A., 1993, “Proposed guidelines for reporting performance of a Solar Dish/Stirling Electric Generation System,” Proc. of 28th Intersociety Energy Conversion Engineering Conf., Atlanta, GA, pp. 2.503–2.509.

Figures

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SBP/LCS 10-kWe dish/Stirling system
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Scheme of hybrid heat pipe receiver
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Hybrid heat pipe receiver with combustion system
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Prototype combustor during start-up tests
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Transparent combustor model, using smoke for flow visualization
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Redesigned combustor, waiting for to be fitted to the heat pipe
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Start-up procedure for hybrid receiver from ambient temperature
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Operation in gas-only mode in the lab
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Scheme of the Lund experimental burner
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Schematic view of EGR contra CGR
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Results of tests with varying EGR/CGR rates (λ at x-axis)
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Emissions of Lund natural gas combustor for the SOLO161 CHP unit (λ at x-axis)
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Solar-only mode with by-pass heat rejection
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Corrected performance in solar-only mode, with comparison to DISTAL 2

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