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Optimal Upgrade of a District Heating Plant into a Polygeneration Plant Using Biomass as Feedstock
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.ORCID iD: 0000-0002-3950-0809
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Energy and Climate Studies, ECS.ORCID iD: 0000-0001-7972-0876
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.ORCID iD: 0000-0002-3661-7016
2013 (English)In: Power Division (Publication) POWER American Society of Mechanical Engineers, 2013Conference paper, Published paper (Refereed)
Abstract [en]

This paper aims at evaluating the possible upgrading of an existing district heating plant for production of electricity and pellets. The evaluation is carried out by optimizing the alternatives from the economic, thermodynamic and environmental point of view. In order to examine how the design can be optimized, a detailed model of the process has been elaborated using ASPEN Utilities and Matlab optimization toolbox. The parameters of the polygeneration plant have then been varied in order to examine how optimal economic benefit can be extracted from the biomass streams whilst still meeting the fundamental process demands of the industries and heat demand of the community. A multi-objective optimization has been used to investigate the Pareto-optimal trade-offs that exist between low electricity costs and investment cost. The resulting polygeneration plant designs conclude that it is feasible toproduce 18 and 25 MW of power while at the same time supplying the process steam required by the nearby industries and district heating for the community. The results also shown that it is feasible to operate the plant more hours per year by producing pellets and it could be possible to generate additional district heating (up to 25 ton/h of hot water) to cover the demands of a growing community.

Place, publisher, year, edition, pages
2013.
Series
Power Division (Publication) POWER American Society of Mechanical Engineers, Vol. 2
Keyword [en]
Bioenergy, polygeneration, pellets, wood, CHP, cogeneration, district heating, multiobjective optimization
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-123682DOI: 10.1115/POWER2013-98165ISI: 000349875400028Scopus ID: 2-s2.0-84896281957ISBN: 978-079185606-2 (print)OAI: oai:DiVA.org:kth-123682DiVA: diva2:628514
Conference
ASME 2013 Power Conference, POWER 2013; Boston, MA, United States, 29 July-1 August, 2013
Funder
Swedish Energy Agency, P-30148
Note

QC 20140626

Available from: 2013-06-14 Created: 2013-06-14 Last updated: 2015-03-24Bibliographically approved

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Salomon Popa, MarianneGómez Galindo, María FernandaMartin, Andrew

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