Performance analysis of a condensation-extraction steam turbine operating in a sugar-alcohol factory cogeneration system

Paulo Sérgio Barbosa dos Santos; Ricardo Alan  Verdú Ramos; Marcelo Caldato Fiomari; Emanuel  Rocha Woiski; Thaisa Calvo Fugineri Moreti

doi:10.31686/ijier.vol7.iss8.1675

Authors

Prof. Dr. Paulo Sérgio Barbosa dos Santos UNESP / Câmpus de Ilha Solteira - SP
Prof. Dr. Ricardo Alan Verdú Ramos UNESP / Câmpus de Ilha Solteira - SP
Me. Eng. Marcelo Caldato Fiomari UNESP / Câmpus de Ilha Solteira - SP
Prof. Dr. Emanuel Rocha Woiski UNESP / Câmpus de Ilha Solteira - SP
Drª Engª Thaisa Calvo Fugineri Moreti UNESP / Câmpus de Ilha Solteira - SP

DOI:

https://doi.org/10.31686/ijier.vol7.iss8.1675

Keywords:

Cogeneration, Condensation-extraction steam turbine, Sugar-alcohol factory

Abstract

In this work a thermodynamic analysis for a condensation-extraction steam turbine capable of driving a 40 MVA electric generator in a sugar-alcohol factory was carried out. Sensibility analyses were performed to evaluate the behavior of the overall energy efficiency of a plant with the condensation-extraction steam turbine in function of the boiler efficiency, the specific consumption of steam in the processes as well as the condensation rate in the turbine. The analysis results have shown that this turbine in the cogeneration system contribute to increasing the power generation, although the condensation reduces the overall efficiency of the plant. It has also been observed that the plant efficiency is very sensitive to the condensation rate variation and increases with the demand for steam in the processes.

Downloads

Download data is not yet available.

References

Á. A. D. Pérez, J.C. Escobar Palacio, O. J. Venturini, A. M. Martínez Reyes, D. J. Rúa Orozco, E. E. Silva Lora, O. A. Almazán del Omo, ‘’Thermodynamic and economic evaluation of reheat and regeneration alternatives in cogeneration systems of the Brazilian sugarcane and alcohol sector’’, Energy, 2018, p. 247-262.

T.J.M.P. Souto, A.C.D. Coelho, R. M. de Holanda, A.S. Moraes, Y. M. Paz, R.A. J. da Silva,’’Viabilidade da bioeletricidade a partir da cana-de-açúcar’’, Revista em Agronegócio e Meio Ambiente, Maringá, Paraná, Brazil, 2018, p. 409-429.

B. H. Barbosa, C. S. dos Santos, S. de Oliveira, ‘’Energy efficiency analysis of sugarcane bagasse in steam generation in a sugar plant’’. Revista Metropolitana de Sustentabilidade, São Paulo, Brazil, 2018, p. 106-121.

PROINFA – Incentive Program for Use of Alternative Energy Sources, Ministry of Mines and Energy, Brazil. Available at: www.mme.gov.br/proinfa.(In Portuguese).

M.C.B. Nascimento, E. P. Freire, F.D.A.S. Dantas, M. B. Giasante, ‘’State of the art of municipal solid waste landfills that use biogas for power generation and biomethane in Brazil’’, Engenharia Sanitaria e Ambiental, Rio de Janeiro, Brasil, 2019, p. 143-155.

I.Malico, R.N. Pereira, A. C. Gonçalves, A. M. O. Sousa, ‘’Current status and future perspectives for energy production from solid biomass in the European industry’’, Renewable and Sustainable Energy Reviews, 2019, p. 960–977.

S. Ahmad, M. A. Ali, G. M. Aita, M. T. Khan, I. A. Khan, ‘’Source-Sink Relationship of Sugarcane Energy Production at the Sugar Mills’, Sugarcane Biofuel, Springer, Cham, Chapter 16, 2019, p. 349-388.

Alstom Power Industrial Turbines, Steam Turbine Data Sheet, Proposal AA.SP.’1.01 Rev01, Taubaté, Brazil, 2001.

G. Van Wylen, R. Sonntag, C. Borgnakke, Fundamentals of Classical Thermodynamics, Ed. Edgard Blücher, Sao Paulo, Brazil, 594p., 1995.

S.A. Klein, F.L. Alvarado, Engineering Equation Solver, F-Chart Software, Middleton, WI, USA, 1995.