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Implications of energy efficiency improvement for CO2 emissions in energy-intensive industry

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Tuomaala, Mari, Dr.
dc.contributor.author Siitonen, Sari
dc.date.accessioned 2012-08-28T11:52:07Z
dc.date.available 2012-08-28T11:52:07Z
dc.date.issued 2010
dc.identifier.isbn 978-952-60-3435-5 (electronic)
dc.identifier.isbn 978-952-60-3434-8 (printed) #8195;
dc.identifier.issn 1795-4584
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/4873
dc.description.abstract This thesis explores how energy efficiency improvement implemented in industrial plants contributes towards achieving CO2 emission reduction. The measurement of energy efficiency and CO2 emissions are related issues. The implications of the following challenges in measuring energy efficiency have been evaluated based on constructive case studies: variables affecting energy efficiency, the allocation problem, system boundary definitions and energy valuation. In addition, the realisation of emission reduction potential is analysed. The thesis shows that, among other things, the utilisation of recycled materials is an important variable that has to be taken into account when the energy efficiencies of different plants are compared. In the case of CHP production, some cost allocation methods, such as the energy method, may overestimate the feasibility of heat conservation investment from the industrial mill perspective. Due to heat conservation, CHP electricity production may be reduced at the mill site, which increases the demand for external electricity. The purchase of external electricity has implications for energy consumption and CO2 emissions at the national level. Therefore, the realised CO2 reduction of heat conservation investment may seem totally different from the mill site and national perspectives, which demonstrates the importance of the system boundary definition when evaluating the contribution of an individual energy efficiency investment towards fulfilling the commitment to reduce CO2 emissions. Also, increased operational flexibility and changing market conditions, such as energy and emission allowance prices, complicate the evaluation of the emission reduction potential and often reduce the exploitation of the full emission reduction potential. The thesis contributes to the research on monitoring energy efficiency and CO2 emissions in connection with the implementation of energy and climate policy. en
dc.format.extent Verkkokirja (466 KB, 46 s.)
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Aalto-yliopiston teknillinen korkeakoulu en
dc.relation.ispartofseries TKK dissertations, 246 en
dc.relation.haspart [Publication 1]: Sari Siitonen, Mari Tuomaala, and Pekka Ahtila. 2010. Variables affecting energy efficiency and CO2 emissions in the steel industry. Energy Policy, volume 38, number 5, pages 2477-2485. © 2009 Elsevier Science. By permission. en
dc.relation.haspart [Publication 2]: Sari Siitonen, Mari Tuomaala, and Pekka Ahtila. 2010. Influences of material recycling on energy efficiency, Case: iron and steel industry & pulp and paper industry. In: Proceedings of the 2nd International Conference on Applied Energy (ICAE 2010). Singapore. 21-23 April 2010. Pages 794-805. © 2010 ICAE Organising Committee. By permission. en
dc.relation.haspart [Publication 3]: Sari Siitonen and Henrik Holmberg. Estimating the value of energy saving in industry by different cost allocation methods. International Journal of Energy Research. Accepted for publication. © 2010 John Wiley & Sons. By permission. en
dc.relation.haspart [Publication 4]: Sari Siitonen, Mari Tuomaala, Markku Suominen, and Pekka Ahtila. 2010. Implications of process energy efficiency improvements for primary energy consumption and CO2 emissions at the national level. Applied Energy, volume 87, number 9, pages 2928-2937. © 2009 Elsevier Science. By permission. en
dc.relation.haspart [Publication 5]: Sari Siitonen and Pekka Ahtila. 2010. The influence of operational flexibility on the exploitation of CO2 reduction potential in industrial energy production. Journal of Cleaner Production, volume 18, number 9, pages 867-874. © 2010 Elsevier Science. By permission. en
dc.subject.other Energy
dc.subject.other Environmental science
dc.title Implications of energy efficiency improvement for CO2 emissions in energy-intensive industry en
dc.type G5 Artikkeliväitöskirja fi
dc.contributor.school Aalto-yliopiston teknillinen korkeakoulu fi
dc.contributor.department Energiatekniikan laitos fi
dc.contributor.department Department of Energy Technology en
dc.subject.keyword energy efficiency en
dc.subject.keyword CO2 emissions en
dc.subject.keyword combined heat and power (CHP) production en
dc.identifier.urn URN:ISBN:978-952-60-3435-5
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.type.ontasot Doctoral dissertation (article-based) en
dc.contributor.supervisor Ahtila, Pekka, Prof.

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