eprintid: 1419709 rev_number: 41 eprint_status: archive userid: 608 dir: disk0/01/41/97/09 datestamp: 2014-02-23 19:44:02 lastmod: 2021-09-17 22:24:37 status_changed: 2014-02-23 19:44:02 type: article metadata_visibility: show item_issues_count: 0 creators_name: Noorkami, M creators_name: Robinson, JB creators_name: Meyer, Q creators_name: Obeisun, OA creators_name: Fraga, ES creators_name: Reisch, T creators_name: Shearing, PR creators_name: Brett, DJL title: Effect of temperature uncertainty on polymer electrolyte fuel cell performance ispublished: pub divisions: UCL divisions: B04 divisions: C05 divisions: F43 keywords: Polymer electrolyte fuel cell, Polarisation area, Temperature uncertainty, Monte Carlo sampling, Thermal imaging note: © 2013, The Authors. Published by Elsevier Ltd. All rights reserved. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-No Derivative Works License, which permits non-commercial use, distribution, and reproduction in any medium, provided the original author and source are credited. abstract: The temperature of operation is a key parameter in determining the performance and durability of a polymer electrolyte fuel cell (PEFC). Controlling temperature and understanding its distribution and dynamic response is vital for effective operation and design of better systems. The sensitivity to temperature means that uncertainty in this parameter leads to variable response and can mask other factors affecting performance. It is important to be able to determine the impact of temperature uncertainly and quantify how much PEFC operation is influenced under different operating conditions. Here, a simple lumped mathematical model is used to describe PEFC performance under temperature uncertainty. An analytical approach gives a measure of the sensitivity of performance to temperature at different nominal operating temperatures and electrical loadings. Whereas a statistical approach, using Monte Carlo stochastic sampling, provides a ‘probability map’ of PEFC polarisation behaviour. As such, a polarisation ‘area’ or ‘band’ is considered as opposed to a polarisation ‘curve’. Results show that temperature variation has the greatest effect at higher currents and lower nominal operating temperatures. Thermal imaging of a commercial air-cooled stack is included to illustrate the temporal and spatial temperature variation experienced in real systems. date: 2014-01-16 official_url: http://dx.doi.org/10.1016/j.ijhydene.2013.10.156 vfaculties: VENG oa_status: green full_text_type: pub primo: open primo_central: open_green verified: verified_manual elements_source: WoS-Lite elements_id: 920809 doi: 10.1016/j.ijhydene.2013.10.156 lyricists_name: Brett, Daniel lyricists_name: Fraga, Eric lyricists_name: Obeisun, Oluwamayowa lyricists_name: Robinson, James lyricists_name: Shearing, Paul lyricists_id: DBRET49 lyricists_id: ESFRA78 lyricists_id: OOBEI82 lyricists_id: ROBIN60 lyricists_id: PSHEA33 full_text_status: public publication: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY volume: 39 number: 3 pagerange: 1439 - 1448 issn: 0360-3199 citation: Noorkami, M; Robinson, JB; Meyer, Q; Obeisun, OA; Fraga, ES; Reisch, T; Shearing, PR; Noorkami, M; Robinson, JB; Meyer, Q; Obeisun, OA; Fraga, ES; Reisch, T; Shearing, PR; Brett, DJL; - view fewer <#> (2014) Effect of temperature uncertainty on polymer electrolyte fuel cell performance. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 39 (3) 1439 - 1448. 10.1016/j.ijhydene.2013.10.156 <https://doi.org/10.1016/j.ijhydene.2013.10.156>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/1419709/1/1-s2.0-S0360319913026712-main.pdf