Modeling and experimental investigation of dynamics of a directly combined binary turbine system using steam and R123

Yoshiaki Tanzawa, Ryo Kato, Yukio Terashima, Takumi Hashizume, Yoshiharu Amano, Akira Usui

    Research output: Chapter in Book/Report/Conference proceedingChapter

    5 Citations (Scopus)

    Abstract

    The binary turbine system that employs steam as the primary working fluid has used R11 as the secondary working fluid, because R11 has good characteristics as a working fluid in power plants. However, substitute LBMs (low boiling-temperature mediums compared with water) are being developed because of the destruction of the ozone layer by CFCs. In this paper, modeling and experimental investigations into the dynamics of a directly combined binary turbine system using R123 instead of R11 are described. The system consists mainly of a steam- and an R123-turbine, an R123 vapor generator, and an AC generator. The dynamic behavior of the system is discussed from the viewpoint of the network theory. The components of the system are represented as two- or three-port elements of the network and the vapor flow rate and shaft torque are appropriated as the through variable, and the vapor pressure and rotational speed as the across variable. As a result, a very simple network model based on the dynamics of various turbine systems like this was derived. The validity of the model was proven through comparison with our experimental results, which are the frequency responses examined with respect to generator load changes. In addition, we demonstrate that the model is very effective in predicting the dynamic behavior and power generation mechanism of directly combined binary turbine systems.

    Original languageEnglish
    Title of host publicationAmerican Society of Mechanical Engineers, Advanced Energy Systems Division (Publication) AES
    Pages35-40
    Number of pages6
    Volume38
    Publication statusPublished - 1998

    Fingerprint

    Turbines
    Steam
    Fluids
    AC generators
    Vapors
    Ozone layer
    Chlorofluorocarbons
    Circuit theory
    Vapor pressure
    Boiling liquids
    Frequency response
    Power generation
    Power plants
    Torque
    Flow rate
    Water
    Temperature

    ASJC Scopus subject areas

    • Energy Engineering and Power Technology
    • Mechanical Engineering

    Cite this

    Tanzawa, Y., Kato, R., Terashima, Y., Hashizume, T., Amano, Y., & Usui, A. (1998). Modeling and experimental investigation of dynamics of a directly combined binary turbine system using steam and R123. In American Society of Mechanical Engineers, Advanced Energy Systems Division (Publication) AES (Vol. 38, pp. 35-40)

    Modeling and experimental investigation of dynamics of a directly combined binary turbine system using steam and R123. / Tanzawa, Yoshiaki; Kato, Ryo; Terashima, Yukio; Hashizume, Takumi; Amano, Yoshiharu; Usui, Akira.

    American Society of Mechanical Engineers, Advanced Energy Systems Division (Publication) AES. Vol. 38 1998. p. 35-40.

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Tanzawa, Y, Kato, R, Terashima, Y, Hashizume, T, Amano, Y & Usui, A 1998, Modeling and experimental investigation of dynamics of a directly combined binary turbine system using steam and R123. in American Society of Mechanical Engineers, Advanced Energy Systems Division (Publication) AES. vol. 38, pp. 35-40.
    Tanzawa Y, Kato R, Terashima Y, Hashizume T, Amano Y, Usui A. Modeling and experimental investigation of dynamics of a directly combined binary turbine system using steam and R123. In American Society of Mechanical Engineers, Advanced Energy Systems Division (Publication) AES. Vol. 38. 1998. p. 35-40
    Tanzawa, Yoshiaki ; Kato, Ryo ; Terashima, Yukio ; Hashizume, Takumi ; Amano, Yoshiharu ; Usui, Akira. / Modeling and experimental investigation of dynamics of a directly combined binary turbine system using steam and R123. American Society of Mechanical Engineers, Advanced Energy Systems Division (Publication) AES. Vol. 38 1998. pp. 35-40
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