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The role of an exergy-based building stock model for exploration of future decarbonisation scenarios and policy making

García Kerdan, I; Raslan, R; Ruyssevelt, P; Morillón Gálvez, D; (2017) The role of an exergy-based building stock model for exploration of future decarbonisation scenarios and policy making. Energy Policy , 105 pp. 467-483. 10.1016/j.enpol.2017.03.020. Green open access

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Abstract

State-of-the-art research suggests that energy systems are best evaluated using exergy analysis, as exergy represents the real value of an energy source, demonstrating it to be the only rational basis for evaluation. After discovering the lack of thermodynamic integration into stock modelling, this paper presents the development of an exergy-based building stock model. The aim of this paper is twofold. Firstly, to investigate the impact of large-scale future energy retrofit scenarios in the English and Welsh (E&W) non-domestic sector, and secondly, to determine the potential of exergy analysis in improving sectoral efficiency and its potential implications on exergy-oriented policy making. The research explores seven different large-scale future retrofit scenarios that encompass typical, low-carbon, and low-exergy approaches. Modelling results show that by 2050, current regulations have the potential to reduce carbon emissions by up to 49.0±2.9% and increasing sector thermodynamic efficiency from 10.7% to 13.7%. On the other hand, a low-exergy oriented scenario based on renewable electricity and heat pumps is able to reduce carbon emissions by 88.2±2.4%, achieving a sectoral exergy efficiency of 19.8%. This modelling framework can provide energy policy makers with new insights on policy options based on exergy indicators and the assessment of their potential impact.

Type: Article
Title: The role of an exergy-based building stock model for exploration of future decarbonisation scenarios and policy making
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.enpol.2017.03.020
Publisher version: http://dx.doi.org/10.1016/j.enpol.2017.03.020
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Energy conservation, Exergy, Stock model, Retrofit scenarios, Non-domestic, Low-exergy buildings
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/1544304
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