eprintid: 1508157
rev_number: 20
eprint_status: archive
userid: 608
dir: disk0/01/50/81/57
datestamp: 2016-11-17 08:56:59
lastmod: 2019-10-17 08:39:30
status_changed: 2016-11-17 08:56:59
type: thesis
metadata_visibility: show
creators_name: Noorkami, M
title: The effect of temperature uncertainty on Proton Exchange Fuel Cell (PEFC) performance
ispublished: unpub
divisions: A01
divisions: B04
divisions: C05
divisions: F43
note: Third party copyright material has been removed from ethesis.
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 exerienced in real systems.
date: 2016-08-28
oa_status: green
full_text_type: other
thesis_class: res_masters_open
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1149528
lyricists_name: Noorkami, Mozhdeh
lyricists_id: MNOOR66
actors_name: Noorkami, Mozhdeh
actors_id: MNOOR66
actors_role: owner
full_text_status: public
pages: 99
institution: UCL (University College London)
department: Chemical Engineering
thesis_type: Masters
citation:        Noorkami, M;      (2016)    The effect of temperature uncertainty on Proton Exchange Fuel Cell (PEFC) performance.                   Masters thesis , UCL (University College London).     Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1508157/7/Noorkami_Thesis-MN.pdf.%20redacted.pdf