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Energy performance comparisons in the sugar cane industry
KTH, Superseded Departments, Energy Technology.
KTH, Superseded Departments, Energy Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
(English)Manuscript (preprint) (Other academic)
Abstract [en]

Operation parameters of both traditional and modern sugar mills are analyzed and compared. Results show that the power-to-heat ratio of the modern and traditional mills lie in the ranges of 0.3-1 and 0.04-0.07, respectively. The three modifications made are: change to electric drives and higher capacity BPT (Case 1), HP boiler, CEST and electric drives (Case 2) and Case 2 plus bagasse drying (Case 3). The thermodynamic impact of these modifications on the traditional mills, shows more power is generated as the modification gets more advanced. The average increment in cogeneration efficiency values (as compared to base case) for Case 1, Case 2 and Case 3 are 4 %, 21 % and 31 %, respectively. The surplus power due to the modification made in Case 1 and Case 2 lies in the range 8-36 kWh/TC and 58-104 kWh/TC, respectively. For Case 3, the surplus power is the highest and the power generated lies in the range of 102-142 kWh/TC. The average LCOE value for Case 1 is 11 USD/MWh. For Cases 2 and 3 the average LCOE is 58 USD/kWh. The lowest average PBP values obtained are corresponding to the modification in Case 1. For the electricity prices of 0.04, 0.08 and 0.16 USD/kWh , the PBP for Case 1 are 7.5, 3 and 1 year. For Case 2 and Case 3, the lowest average PBP values obtained are corresponding to electricity price of 0.16 USD/kWh and these amount 6 and 5 years, respectively. 

Keywords [en]
Sugar cane; traditional mills; modern mills; LCOE; energy performance; model
National Category
Energy Engineering
Research subject
Energy Technology
Identifiers
URN: urn:nbn:se:kth:diva-207111OAI: oai:DiVA.org:kth-207111DiVA, id: diva2:1095860
Note

QCR 20170517

Available from: 2017-05-16 Created: 2017-05-16 Last updated: 2017-05-17Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf