Please use this identifier to cite or link to this item:
|Title:||Numerical investigation of liquid water cooling for a proton exchange membrane fuel cell stack||Authors:||Sasmito, A.P.
|Issue Date:||Feb-2011||Citation:||Sasmito, A.P., Birgersson, E., Mujumdar, A.S. (2011-02). Numerical investigation of liquid water cooling for a proton exchange membrane fuel cell stack. Heat Transfer Engineering 32 (2) : 151-167. ScholarBank@NUS Repository.||Abstract:||The operation of proton exchange membrane fuel cell (PEMFC) stacks requires careful thermal and water management for optimal performance. Appropriate placement of cooling plates and appropriate cooling conditions are therefore essential. To study the impact of these design parameters, a two-phase model accounting for the conservation of mass, momentum, species, energy, and charge, a phenomenological model for the membrane, and an agglomerate model for the catalyst layer, is developed and solved. The model is validated for a single cell, in terms of both the local and the global current density, and good agreement is found. Four repetitive computational units are then identified for the number of single cells placed between the coolant plates: (i) one cell; (ii) two cells; (iii) three cells; and (iv) four cells. The flow fields in the single cells and the cooling plates are of a net type. The results show that there is a strong correlation between stack performance and the operating conditions/placement of the coolant plates. For the limiting case of one coolant plate between each unit cell, similar operating conditions can be achieved in every individual cell throughout the stack. As more cells are placed in between coolant plates, the stack performance drops due to an increase in temperature and decrease in water content in the membranes, unless the cooling temperature is lowered. The coolant temperature and inlet velocity need to be monitored carefully and adjusted to the operating conditions of the stack. This model can be employed for design and optimization of liquid water cooling of a PEMFC stack. Copyright © Taylor and Francis Group, LLC.||Source Title:||Heat Transfer Engineering||URI:||http://scholarbank.nus.edu.sg/handle/10635/51629||ISSN:||01457632|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 27, 2018
WEB OF SCIENCETM
checked on Dec 31, 2018
checked on May 21, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.