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International Heat Transfer Conference 13

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

THERMODYNAMICS ANALYSIS OF A MODERN STEAM TURBINE UTILIZED FOR COGENERATION IN A SUGAR-ALCOHOL FACTORY

M. C. Fiomari
Department of Mechanical Engineering - UNESP / Ilha Solteira, Av. Brasil, 56 - 15385-000 - Ilha Solteira, SP - Brazil

A. T. Takaki
Department of Mechanical Engineering - UNESP / Ilha Solteira, Av. Brasil, 56 - 15385-000 - Ilha Solteira, SP - Brazil

M. H. S. Mashiba
Department of Mechanical Engineering - UNESP / Ilha Solteira, Av. Brasil, 56 - 15385-000 - Ilha Solteira, SP - Brazil

D. J. Saran
Department of Mechanical Engineering - UNESP / Ilha Solteira, Av. Brasil, 56 - 15385-000 - Ilha Solteira, SP - Brazil

R. A. V. Ramos
Department of Mechanical Engineering - UNESP / Ilha Solteira, Av. Brasil, 56 - 15385-000 - Ilha Solteira, SP - Brazil

DOI: 10.1615/IHTC13.p24.190
12 pages

Abstract

In this work a detailed thermodynamics analysis for an extraction-condensation steam turbine, capable to drive a 40 MVA electricity generator in a sugar-alcohol factory, was carried out. The use of this turbine in the cogeneration system showed that its efficiency contributed to increase the power generation, although the condensation reduces the overall efficiency of the plant. Sensibility analyses were performed to evaluate the behavior of the overall energy efficiency of the plant with the extraction-condensation turbine in function of the boiler efficiency, the specific consumption of steam in the processes and the condensation rate in the turbine. It was observed that the plant efficiency is very sensible to the condensation rate variation and it increases when there is an increase in the demand of steam for processes.

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Measurement of fluid temperature with an arrangement of three thermocouples