An experimental investigation of the performance of a solar chimney turbine is presented. The design features a single rotor and uses the chimney supports as inlet guide vanes (IGVs) to introduce pre-whirl. This reduces the turbine exit kinetic energy at the diffuser inlet and assists the flow turning in the IGV-to-rotor duct. The rotor configuration allows the supports to be placed directly under the chimney walls. Measurements from a scale model turbine are used to calculate the turbine performance and efficiency. Efficiencies over a wide operating range and detailed performance measurements at two operating points are presented. Total-to-total efficiencies of 85–90% and total-to-static of 77–80% over the design range are measured. The detailed measurements give insight into the turbine performance and possible design improvements. These results allow more accurate simulation of solar chimney power plants.
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February 2003
Technical Papers
Solar Chimney Turbine Performance
Anthony J. Gannon
,
ajgannon@ing.sun.ac.za
Anthony J. Gannon
Department of Mechanical Engineering, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
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Theodor W. von Backstro¨m
twvb@sun.ac.za
Theodor W. von Backstro¨m
Department of Mechanical Engineering, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
Search for other works by this author on:
Anthony J. Gannon
Department of Mechanical Engineering, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
ajgannon@ing.sun.ac.za
Theodor W. von Backstro¨m
Department of Mechanical Engineering, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
twvb@sun.ac.za
Contributed by the Solar Energy Division of the American Society of Mechanical Engineers for publication in the ASME JOURNAL OF SOLAR ENERGY ENGINEERING. Manuscript received by the ASME Solar Energy Division, March 2002; final revision, June 2002. Associate Editor: R. Pitz-Paal.
J. Sol. Energy Eng. Feb 2003, 125(1): 101-106 (6 pages)
Published Online: January 27, 2003
Article history
Received:
March 1, 2002
Revised:
June 1, 2002
Online:
January 27, 2003
Citation
Gannon, A. J., and von Backstro¨m, T. W. (January 27, 2003). "Solar Chimney Turbine Performance ." ASME. J. Sol. Energy Eng. February 2003; 125(1): 101–106. https://doi.org/10.1115/1.1530195
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