Conference Proceedings

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Browsing Conference Proceedings by Author "Kihedu, J."

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    Methodological approach of performance evaluation for using pump as Micro Hydro-turbine
    (International Solar Energy Society, 2017) Mdee, O. J.; Kimambo, C. Z.; Nielsen, T. K.; Kihedu, J.
    The pumps work differently in terms of performance characteristics when operated in reverse mode to generate mechanical rotational energy driven by the water energy. The performance characteristics related to head, flow rate, specific speed and efficiency have been predicted differently from available conversion methods. Also, the procedure of selecting pump as hydro-turbine varies from different conversion methods. This article presents the methodological approach of evaluating the pump as hydro-turbine related to selection procedures, performance characteristics and challenges.
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    Reversing centrifugal pumps as alternative to conventional turbines for micro hydropower: A review.
    (Power and Energy Systems (AfricaPES), 2018) Mdee, O. J.; Kihedu, J.; Kimambo, C. Z.; Nielsen, T. K
    This paper presents the operation of centrifugal pumps as turbines for micro hydropower application. Block diagrams are used to present components required from intake chamber to hydropower plant and their electrical energy mechanism for micro hydropower system. A comparison of operational parameters of pump as turbine and conventional turbines is discussed. Also, the paper discusses three types of methods for selecting the centrifugal pump as turbine based on the head, flow rate, rotational speed and specific speed. Furthermore, the technique used to determine the flow rate characteristics are discussed as well as the technical guideline is tabulated to assist the application of centrifugal pump as turbine for micro hydropower scheme development.