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Microturbine with new design of nozzles

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  • Fershalov, Yu.Ya.
  • Fershalov, A. Yu.
  • Fershalov, M. Yu.

Abstract

The article presents a new technical solution for designingmicroturbine nozzles. The nozzles have a rectangular cross section, the longitudinal axis of the accelerating section is straight, and its projection onto the plane of the nozzle is placed at a tangent to thecircle formed by the middle diameter of the turbine. This makes it possible to increase the efficiency of the microturbines, which have nozzles with outlet angles from 5° to 9°.Microturbine efficiency research was carried on an experimental turbine. The studied turbine power reached 80 kW. The authors submit an empirical model makes it possible to predict the efficiency of a microturbine and determine the values of the factors corresponding to the maximum efficiency mode. Through optimization, the efficiency of the investigated microturbine stages reached 0.62 with tapered nozzles. The other parameters were: the nozzle outlet angle - 5°; the rotor blade input angle - 8.1°; the dimensionless peripheral speed - 0.44; the degree of pressure reduction per stage - 19.7.

Suggested Citation

  • Fershalov, Yu.Ya. & Fershalov, A. Yu. & Fershalov, M. Yu., 2018. "Microturbine with new design of nozzles," Energy, Elsevier, vol. 157(C), pages 615-624.
    • Handle: RePEc:eee:energy:v:157:y:2018:i:c:p:615-624
    DOI: 10.1016/j.energy.2018.05.153
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    References listed on IDEAS

    as
    1. Kim, Chul Kyu & Yoon, Joon Yong, 2016. "Performance analysis of bladeless jet propulsion micro-steam turbine for micro-CHP (combined heat and power) systems utilizing low-grade heat sources," Energy, Elsevier, vol. 101(C), pages 411-420.
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    Cited by:

    1. Liaw, Kim Leong & Kurnia, Jundika C. & Lai, Wen Kang & Ong, Khai Chuin & Zar, Muhammad Aliff B. Mohd Ali & Muhammad, M. Fadhli B. & Firmansyah,, 2023. "Optimization of a novel impulse gas turbine nozzle and blades design utilizing Taguchi method for micro-scale power generation," Energy, Elsevier, vol. 282(C).
    2. Fershalov, A. Yu & Fershalov, Yu. Ya & Fershalov, M. Yu, 2021. "Principles of designing gas microturbine stages," Energy, Elsevier, vol. 218(C).

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