A NEW APPROACH IN CHP STEAM TURBINES THERMODYNAMIC CYCLES COMPUTATIONS

Abstract

This paper presents a new approach in mathematical modeling of thermodynamic ycles and electric power of utility district-heating and cogeneration steam urbines. The approach is based on the application of the dimensionless mass lows, which describe the thermodynamic cycle of a combined heat and power team turbine. The mass flows are calculated relative to the mass flow to low ressure turbine. The procedure introduces the extraction mass flow load arameter νh which clearly indicates the energy transformation process, as well s the cogeneration turbine design features, but also its fitness for the electrical nergy system requirements. The presented approach allows fast computations, s well as direct calculation of the selected energy efficiency indicators. The pproach is exemplified with the calculation results of the district heat power to lectric power ratio, as well as the cycle efficiency, versus νh. The influence of νh n the conformity of a combined heat and power turbine to the grid requirements s also analyzed and discussed.

Keywords

Dates

  • Submission Date2012-05-03
  • Revision Date2012-07-04
  • Acceptance Date2012-07-12

DOI Reference

10.2298/TSCI120503178G

References

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