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Computational studies on the effect of geometric parameters on the performance of a solar chimney power plant

Patel, Sandeep K. and Prasad, Deepak D. and Ahmed, Mohammed R. (2014) Computational studies on the effect of geometric parameters on the performance of a solar chimney power plant. Energy Conversion and Management, 77 . pp. 424-431. ISSN 0196-8904

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    Abstract

    A solar chimney power plant (SCPP) is a renewable-energy power plant that transforms solar energy into electricity. The SCPP consists of three essential elements – solar air collector, chimney tower, and wind turbine(s). The present work is aimed at optimizing the geometry of the major components of the SCPP using a computational fluid dynamics (CFD) software ANSYS-CFX to study and improve the flow characteristics inside the SCPP. The overall chimney height and the collector diameter of the SCPP were kept constant at 10 m and 8 m respectively. The collector inlet opening was varied from 0.05 m to 0.2 m. The collector outlet diameter was also varied from 0.6 m to 1 m. These modified collectors were tested with chimneys of different divergence angles (0�–3�) and also different chimney inlet openings of 0.6 m to 1 m. The diameter of the chimney was also varied from 0.25 m to 0.3 m. Based on the CFX computational results, the best configuration was achieved using the chimney with a divergence angle of 2� and chimney diameter of 0.25 m together with the collector opening of 0.05 m and collector outlet diameter of 1 m. The temperature inside the collector is higher for the lower opening resulting in a higher flow rate and power.

    Item Type: Journal Article
    Subjects: T Technology > TA Engineering (General). Civil engineering (General)
    T Technology > TJ Mechanical engineering and machinery
    Divisions: Faculty of Science, Technology and Environment (FSTE) > School of Engineering and Physics
    Depositing User: Deepak Prasad
    Date Deposited: 10 Mar 2014 11:31
    Last Modified: 19 Sep 2016 15:44
    URI: http://repository.usp.ac.fj/id/eprint/7187
    UNSPECIFIED

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