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An exergoeconomic-based parametric study to examine the effects of active and passive energy retrofit strategies for buildings

García Kerdan, I; Raslan, R; Ruyssevelt, P; Morillón Gálvez, D; (2016) An exergoeconomic-based parametric study to examine the effects of active and passive energy retrofit strategies for buildings. Energy and Buildings , 133 pp. 155-171. 10.1016/j.enbuild.2016.09.029. Green open access

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Abstract

The paper describes a systematic framework that uses exergoeconomic theory integrated into ‘building energy retrofit’ (BER) design. An exergoeconomic module, based on the SPECO method, has been embedded into ‘EXRETOpt’, a recently developed retrofit-oriented exergy simulation tool based on EnergyPlus. Both active and passive technologies were analysed using two calibrated archetype non-domestic buildings as case studies (an office and a primary school). A novel cost-benefit indicator which accounts for building exergy destruction cost, retrofit annual capital cost, and project annual revenue is presented. This indicator is employed to account for best exergoeconomic performance technologies and to further develop deep BER packages. Compared to typical practice, exergoeconomics combined with cost-benefit provides a powerful tool for exploration and design improvement of building energy systems. In both cases, final product cost for heating and cooling processes were substantially reduced. In addition, the office case presented improvements in energy use by 67%, CO2 emissions by 53%, thermal comfort by 22%, exergy destructions by 42%, and the overall building exergy efficiency was improved from 14.8% to 20.0%. The school case presented similar results with an improvement of building exergy efficiency from 8.2% to 11.1%, and the potential to generate income due to current government incentives.

Type: Article
Title: An exergoeconomic-based parametric study to examine the effects of active and passive energy retrofit strategies for buildings
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.enbuild.2016.09.029
Publisher version: http://doi.org/10.1016/j.enbuild.2016.09.029
Language: English
Additional information: © 2016 Elsevier B.V. All rights reserved. This manuscript version is made available under a Creative Commons Attribution Non-commercial Non-derivative 4.0 International license (CC BY-NC-ND 4.0). This license allows you to share, copy, distribute and transmit the work for personal and non-commercial use providing author and publisher attribution is clearly stated. Further details about CC BY licenses are available at https://creativecommons.org/licenses/. Access may be initially restricted by the publisher.
Keywords: Exergy; Exergoeconomics; Building simulation; Retrofits; Parametric study; Cost-benefit analysis
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of the Built Environment
URI: http://discovery.ucl.ac.uk/id/eprint/1517100
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