Case Study and Feasibility Analysis of Multi-Objective Life Cycle Energy System Optimization in a Nordic Campus Building

Due to the high energy consumption of buildings, there is a demand for both economically and environmentally effective designs for building energy system retrofits. While multi-objective optimization can be used to solve complicated problems, its use is not yet widespread in the industry. This study...

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Autores principales:	Vilppu Eloranta, Aki Grönman, Aleksandra Woszczek
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	building energy system optimization renewable energy retrofit life cycle emission Technology T
Acceso en línea:	https://doaj.org/article/3b6760355c8349658a86c187bceeeca0
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id	oai:doaj.org-article:3b6760355c8349658a86c187bceeeca0
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spelling	oai:doaj.org-article:3b6760355c8349658a86c187bceeeca02021-11-25T17:28:22ZCase Study and Feasibility Analysis of Multi-Objective Life Cycle Energy System Optimization in a Nordic Campus Building10.3390/en142277421996-1073https://doaj.org/article/3b6760355c8349658a86c187bceeeca02021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7742https://doaj.org/toc/1996-1073Due to the high energy consumption of buildings, there is a demand for both economically and environmentally effective designs for building energy system retrofits. While multi-objective optimization can be used to solve complicated problems, its use is not yet widespread in the industry. This study first aims to develop an efficient and applicable multi-objective building energy system optimization method, used to dimension energy production and storage retrofit components in a case campus building in Lahti, Finland. Energy consumption data of the building are obtained with a dynamic energy model. The optimization model includes economic and environmental objectives, and the approach is found to function satisfactorily. Second, this study aims to assess the feasibility and issues of multi-objective single-building energy system optimization via the analysis of the case optimization results. The results suggest that economically beneficial local energy production and storage retrofits could not always lead to life cycle CO<sub>2</sub>-eq emission reductions. The recognized causes are high life cycle emissions from the retrofit components and low Nordic grid energy emissions. The performed sensitivity and feasibility analyses show that correctness and methodological comparability of the used emission factors and future assumptions are crucial for reliable optimization results.Vilppu ElorantaAki GrönmanAleksandra WoszczekMDPI AGarticlebuilding energy system optimizationrenewable energy retrofitlife cycle emissionTechnologyTENEnergies, Vol 14, Iss 7742, p 7742 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	building energy system optimization renewable energy retrofit life cycle emission Technology T
spellingShingle	building energy system optimization renewable energy retrofit life cycle emission Technology T Vilppu Eloranta Aki Grönman Aleksandra Woszczek Case Study and Feasibility Analysis of Multi-Objective Life Cycle Energy System Optimization in a Nordic Campus Building
description	Due to the high energy consumption of buildings, there is a demand for both economically and environmentally effective designs for building energy system retrofits. While multi-objective optimization can be used to solve complicated problems, its use is not yet widespread in the industry. This study first aims to develop an efficient and applicable multi-objective building energy system optimization method, used to dimension energy production and storage retrofit components in a case campus building in Lahti, Finland. Energy consumption data of the building are obtained with a dynamic energy model. The optimization model includes economic and environmental objectives, and the approach is found to function satisfactorily. Second, this study aims to assess the feasibility and issues of multi-objective single-building energy system optimization via the analysis of the case optimization results. The results suggest that economically beneficial local energy production and storage retrofits could not always lead to life cycle CO<sub>2</sub>-eq emission reductions. The recognized causes are high life cycle emissions from the retrofit components and low Nordic grid energy emissions. The performed sensitivity and feasibility analyses show that correctness and methodological comparability of the used emission factors and future assumptions are crucial for reliable optimization results.
format	article
author	Vilppu Eloranta Aki Grönman Aleksandra Woszczek
author_facet	Vilppu Eloranta Aki Grönman Aleksandra Woszczek
author_sort	Vilppu Eloranta
title	Case Study and Feasibility Analysis of Multi-Objective Life Cycle Energy System Optimization in a Nordic Campus Building
title_short	Case Study and Feasibility Analysis of Multi-Objective Life Cycle Energy System Optimization in a Nordic Campus Building
title_full	Case Study and Feasibility Analysis of Multi-Objective Life Cycle Energy System Optimization in a Nordic Campus Building
title_fullStr	Case Study and Feasibility Analysis of Multi-Objective Life Cycle Energy System Optimization in a Nordic Campus Building
title_full_unstemmed	Case Study and Feasibility Analysis of Multi-Objective Life Cycle Energy System Optimization in a Nordic Campus Building
title_sort	case study and feasibility analysis of multi-objective life cycle energy system optimization in a nordic campus building
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/3b6760355c8349658a86c187bceeeca0
work_keys_str_mv	AT vilppueloranta casestudyandfeasibilityanalysisofmultiobjectivelifecycleenergysystemoptimizationinanordiccampusbuilding AT akigronman casestudyandfeasibilityanalysisofmultiobjectivelifecycleenergysystemoptimizationinanordiccampusbuilding AT aleksandrawoszczek casestudyandfeasibilityanalysisofmultiobjectivelifecycleenergysystemoptimizationinanordiccampusbuilding
_version_	1718412278213115904

Case Study and Feasibility Analysis of Multi-Objective Life Cycle Energy System Optimization in a Nordic Campus Building

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