A comparison of an energy/economic-based against an exergoeconomic-based multi-objective optimisation for low carbon building energy design

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Title: A comparison of an energy/economic-based against an exergoeconomic-based multi-objective optimisation for low carbon building energy design
Authors: García Kerdan, I
Raslan, R
Ruyssevelt, P
Morillón Gálvez, D
Item Type: Journal Article
Abstract: This study presents a comparison of the optimisation of building energy retrofit strategies from two different perspectives: an energy/economic-based analysis and an exergy/exergoeconomic-based analysis. A recently retrofitted community centre is used as a case study. ExRET-Opt, a novel building energy/exergy simulation tool with multi-objective optimisation capabilities based on NSGA-II is used to run both analysis. The first analysis, based on the 1st Law only, simultaneously optimises building energy use and design's Net Present Value (NPV). The second analysis, based on the 1st and the 2nd Laws, simultaneously optimises exergy destructions and the exergoeconomic cost-benefit index. Occupant thermal comfort is considered as a common objective function for both approaches. The aim is to assess the difference between the methods and calculate the performance among main indicators, considering the same decision variables and constraints. Outputs show that the inclusion of exergy/exergoeconomics as objective functions into the optimisation procedure has resulted in similar 1st Law and thermal comfort outputs, while providing solutions with less environmental impact under similar capital investments. This outputs demonstrate how the 1st Law is only a necessary calculation while the utilisation of the 1st and 2nd Laws becomes a sufficient condition for the analysis and design of low carbon buildings.
Issue Date: 6-Apr-2017
Date of Acceptance: 28-Mar-2017
URI: http://hdl.handle.net/10044/1/49404
DOI: https://dx.doi.org/10.1016/j.energy.2017.03.142
ISSN: 0360-5442
Publisher: Elsevier
Start Page: 244
End Page: 263
Journal / Book Title: Energy
Volume: 128
Copyright Statement: © 2017 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: 0913 Mechanical Engineering
0915 Interdisciplinary Engineering
Energy
Notes: publisher: Elsevier articletitle: A comparison of an energy/economic-based against an exergoeconomic-based multi-objective optimisation for low carbon building energy design journaltitle: Energy articlelink: http://dx.doi.org/10.1016/j.energy.2017.03.142 content_type: article copyright: © 2017 Elsevier Ltd. All rights reserved.
Publication Status: Published
Appears in Collections:Faculty of Engineering
Chemical Engineering



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