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Carbon dioxide transcritical power cycle discussion
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
2005 (English)Report (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH , 2005. no 49
Series
Trita-REFR, ISSN 1102-0245 ; 05/49
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-6010OAI: oai:DiVA.org:kth-6010DiVA: diva2:10577
Note
QC 20101124Available from: 2006-06-16 Created: 2006-06-16 Last updated: 2010-11-24Bibliographically approved
In thesis
1. Novel cycles using carbon dioxide as working fluid: new ways to utilize energy from low-grade heat sources
Open this publication in new window or tab >>Novel cycles using carbon dioxide as working fluid: new ways to utilize energy from low-grade heat sources
2006 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

This licentiate thesis proposes and analyzes three carbon dioxide novel cycles, namely: the carbon dioxide transcritical power cycle, the carbon dioxide Brayton cycle and the carbon dioxide cooling and power combined cycle. Due to the different characteristics of each cycle, the three cycles are suitable for different applications. The CO2 transcritical power cycle is suitable for harvesting energy from low-grade heat sources, near which a low temperature heat sink is accessible. The CO2 Brayton cycle is suitable for harvesting the energy from relatively high-grade heat sources when there is no low temperature heat sink available. The CO2 cooling and power combined cycle is suitable for applications, where both power and cooling are needed (e.g. automobile applications, in which the cycle can utilize the energy in the engine exhaust gasses to produce power and provide cooling/heating to the mobile compartment room at the same time).

Several models have been developed using the software known as Engineering Equation Solver (EES)1 for both cycle analysis and computer aided heat exchanger design. Different cycle working conditions have been simulated and different working parameters’ influence on the cycle performance has been explained. In addition, Refprop 7.02 is used for calculating the working fluid properties and the CFD tool Femlab has been employed to investigate the particular phenomena influencing the heat exchanger performance.

Place, publisher, year, edition, pages
Stockholm: KTH, 2006. viii, 87 p.
Series
Trita-REFR, ISSN 1102-0245 ; 06:50
National Category
Energy Engineering
Identifiers
urn:nbn:se:kth:diva-4055 (URN)91-7178-410-1 (ISBN)
Presentation
2006-06-15, Sal MWL74, KTH, Brinellvägen 68, Stockholm, 10:00
Opponent
Supervisors
Note
QC 20101124Available from: 2006-06-16 Created: 2006-06-16 Last updated: 2010-11-24Bibliographically 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