Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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
Multi-objective robust optimization of energy systems for a sustainable district in Stockholm
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Service and Energy Systems.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Service and Energy Systems.
2015 (English)In: Proceedings of BS2015: 14th Conference of International Building Performance Simulation Association, Hyderabad, India, Dec. 7-9, 2015., 2015Conference paper, Published paper (Other academic)
Abstract [en]

This paper applies a multi-objective robust design optimization approach to the energy system design of a sustainable district. The life cycle cost and the greenhouse gas emissions are the two objectives that are minimized. In order to investigate the possbility to implement a nearly zero energy district, the nonrenewable primary energy consumption is kept below a certain value, handled as a constraint in the optimization. Through the proposed robust design optimization methodology, the robust Pareto optimal solutions are obtained, which are less sensitive than the deterministic ones to the uncertainties assumed in the selected most influential economic and technical paramers as well as design variables.

Place, publisher, year, edition, pages
2015.
Keyword [en]
Design, Energy utilization, Gas emissions, Greenhouse gases, Life cycle, Optimization, Pareto principle, Design variables, Energy system design, Lifecycle costs, Multi objective, Pareto optimal solutions, Primary energy consumption, Robust design optimization, Robust optimization, Multiobjective optimization
National Category
Architecture
Research subject
Civil and Architectural Engineering
Identifiers
URN: urn:nbn:se:kth:diva-192951Scopus ID: 2-s2.0-84976345007OAI: oai:DiVA.org:kth-192951DiVA: diva2:974005
Conference
14th Conference of International Building Performance Simulation Association, BS 2015, 7 December 2015 through 9 December 2015
Note

QC 20160923

Available from: 2016-09-23 Created: 2016-09-23 Last updated: 2017-03-30Bibliographically approved
In thesis
1. Optimal Design of District Energy Systems: a Multi-Objective Approach
Open this publication in new window or tab >>Optimal Design of District Energy Systems: a Multi-Objective Approach
2016 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The aim of this thesis is to develop a holistic approach to the optimal design of energy systems for building clusters or districts. The emerging Albano university campus, which is planned to be a vivid example of sustainable urban development, is used as a case study through collaboration with the property owners, Akademiska Hus and Svenska Bostäder. The design addresses aspects of energy performance, environmental performance, economic performance, and exergy performance of the energy system. A multi-objective optimization approach is applied to minimize objectives such as non-renewable primary energy consumptions, the greenhouse gas emissions, the life cycle cost, and the net exergy deficit. These objectives reflect both practical requirements and research interest. The optimization results are presented in the form of Pareto fronts, through which decision-makers can understand the options and limitations more clearly and ultimately make better and more informed decisions. Sensitivity analyses show that solutions could be sensitive to certain system parameters. To overcome this, a robust design optimization method is also developed and employed to find robust optimal solutions, which are less sensitive to the variation of system parameters. The influence of different preferences for objectives on the selection of optimal solutions is examined. Energy components of the selected solutions under different preference scenarios are analyzed, which illustrates the advantages and disadvantages of certain energy conversion technologies in the pursuit of various objectives. As optimal solutions depend on the system parameters, a parametric analysis is also conducted to investigate how the composition of optimal solutions varies to the changes of certain parameters. In virtue of the Rational Exergy Management Model (REMM), the planned buildings on the Albano campus are further compared to the existing buildings on KTH campus, based on energy and exergy analysis. Four proposed alternative energy supply scenarios as well as the present case are analyzed. REMM shows that the proposed scenarios have better levels of match between supply and demand of exergy and result in lower avoidable CO2 emissions, which promise cleaner energy structures.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2016. 43 p.
Series
TRITA-IES, 2016:05
Keyword
multi-objective optimization, robust design optimization, district energy
National Category
Architecture
Research subject
Civil and Architectural Engineering
Identifiers
urn:nbn:se:kth:diva-192948 (URN)978-91-7729-129-9 (ISBN)
Presentation
2016-10-14, Sal M108, Brinellvägen 23, Kungl Tekniska högskolan, Stockholm, 14:00 (English)
Opponent
Supervisors
Note

QC 20160923

Available from: 2016-09-23 Created: 2016-09-23 Last updated: 2016-09-23Bibliographically approved

Open Access in DiVA

fulltext(925 kB)239 downloads
File information
File name FULLTEXT01.pdfFile size 925 kBChecksum SHA-512
2b224052fd328cd6434cb11c11c4d0d1467114601bffc53191b8b6305fc2fb60679919a7adc4f4afeb37a3c36989856d73a16942cb0e285b0b2ee3feb3fbaf00
Type fulltextMimetype application/pdf

Other links

ScopusConference website

Search in DiVA

By author/editor
Wang, CongMartinac, Ivo
By organisation
Building Service and Energy Systems
Architecture

Search outside of DiVA

GoogleGoogle Scholar
Total: 239 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 108 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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