Dynamic behavior of a directly combined binary turbine system using a mixture (R134a/R123)

Yoshiaki Tanzawa*, Takumi Hashizume, Yoshiharu Amano, Akira Usui

*この研究の対応する著者

研究成果: Article査読

抄録

Our previous binary turbine system, which employs steam as the primary working fluid, 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) are being developed because of the ozone layer depletion by CFCs. We investigated the system using R123 in the next stage. Because R123 is also controlled, in the previous paper, modeling of the dynamics of a directly combined binary turbine system using a mixture of R134a and R123 are described. In this paper, the steady state characteristics and dynamic behavior of the system using a mixture of R134a and R123 are investigated taking into account the mole fraction of the mixture. In addition to the investigation using the experimental system, the following are clarified using our model: In the steady-state characteristics, there are remarkable differences in pressure based on the thermodynamic properties and in the load allotment of the two turbines. However, in the dynamic characteristics, the effect of the mole fraction could hardly be observed on the response characteristics of the rotating components to the load change.

本文言語English
ページ(範囲)585-590
ページ数6
ジャーナルAmerican Society of Mechanical Engineers, Advanced Energy Systems Division (Publication) AES
40
出版ステータスPublished - 2000 12 1

ASJC Scopus subject areas

  • エネルギー工学および電力技術
  • 機械工学

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