UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

An exergy based approach to resource accounting for factories

Khattak, SH; Greenough, R; Korolija, I; Brown, N; (2016) An exergy based approach to resource accounting for factories. Journal of Cleaner Production , 121 pp. 99-108. 10.1016/j.jclepro.2015.12.029. Green open access

[img]
Preview
Text
Khattak et al 2016 An exergy based approach to resource accounting for factories.pdf

Download (13MB) | Preview

Abstract

Resource accounting is widely practiced to identify opportunities for improving the sustainability of industrial systems. This paper presents a conceptual method for resource accounting in factories that is based on the fundamentals of thermodynamics. The approach uses exergy analysis and treats the factory as an integrated energy system comprising a building, its technical building services and manufacturing processes. The method is illustrated with a case study of an automotive cylinder head manufacturing line in which the resource efficiency of this part of the factory is analysed for different energy system options relating to heating ventilation and air conditioning. Firstly, the baseline is compared with the use of a solar photovoltaic array to generate electricity, and then a heat recovery unit is considered. Finally, both of these options are used together, and here it was found that the non-renewable exergy supply and exergy destruction are reduced by 51.6% and 49.2% respectively. Also, it was found that a conventional energy analysis would overestimate the resource savings from reducing the hot water supplied to the heating system, since energy analysis cannot account for energy quality. Since exergy analysis accounts for both energy quality and quantity it produces a different result. The scientific value of this paper is that it presents an exergy-based approach for factory resource accounting, which is illustrated through application to a real factory. The exergy-based approach is shown to be a valuable complement to energy analysis, which could lead to a more resource efficient system design than one based on energy analysis alone.

Type: Article
Title: An exergy based approach to resource accounting for factories
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jclepro.2015.12.029
Publisher version: http://dx.doi.org/10.1016/j.jclepro.2015.12.029
Language: English
Additional information: Copyright © 2015 Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Keywords: Sustainable manufacturing; Resource accounting; Exergy analysis; Resource efficiency; Energy efficiency; Buildings energy management
UCL classification: UCL
UCL > Provost and Vice Provost Offices
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/1495675
Downloads since deposit
75Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item