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  4. Exergy and economic assessment of renewable electricity generation from sugarcane straw for improved efficiency of sugarcane biorefineries
 
research article

Exergy and economic assessment of renewable electricity generation from sugarcane straw for improved efficiency of sugarcane biorefineries

Ortiz, Pablo A. Silva
•
Orrego, Daniel Flórez  
•
Mariano, Adriano Pinto
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2022
International Journal of Exergy

This work focuses on the revamp of existing sugarcane biorefineries and cogeneration units by using those byproducts, aiming to increase the selling of surplus electricity. The analysis allows identifying potential improvements in the sugarcane cogeneration plants. Simulation processes are employed to denote incremental modifications related to sugarcane straw recovery achieved in the harvesting systems. The results show that the straw recovery through harvesting systems may increase the surplus electricity by up to 30% when sugarcane biorefineries consider the maximum straw recovery fraction. Moreover, the increment in the exergy cost of the straw gathering influences the extended exergy efficiency of the cogeneration unit and, consequently, the entire sugarcane biorefinery. In brief, the capitalisation on sugarcane residues may increase the contribution of this industry to the decarbonisation of the Brazilian electricity mix and increment of profits resulting from the negotiation of decarbonisation credits in the Brazilian sugarcane market.

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Type
research article
DOI
10.1504/IJEX.2022.123606
Author(s)
Ortiz, Pablo A. Silva
Orrego, Daniel Flórez  
Mariano, Adriano Pinto
Kafarov, Vyacheslav
Junior, Silvio De Oliveira
Filho, Rubens Maciel
Date Issued

2022

Published in
International Journal of Exergy
Volume

38

Issue

2

Start page

218

Subjects

exergy analysis

•

sugarcane straw

•

irreversibility

•

biorefinery performance

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
SCI-STI-FM  
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/199068
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