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Chemical Engineering: Recent submissions
Now showing items 441-460 of 994
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Rapid Fabrication of Miniaturized Electric Double-Layer Capacitors Based on Laser Patterned Graphene oxide-Poly (Furfuryl Alcohol) Nanocomposites
(University of Waterloo, 2018-01-30)Miniaturization of various technologies has accelerated and drives new requirements for energy harvesting and storage solutions to power such devices. Reduction in size and designs requiring mechanical flexibility fuel the ... -
Numerical modeling and experimental investigation of a prismatic battery subjected to water cooling
(Taylor and Francis, 2017-03-19)In this paper, a numerical model using ANSYS Fluent for a minichannel cold plate is developed for water-cooled LiFePO4 battery. The temperature and velocity distributions are investigated using experimental and computational ... -
The effects of filamentary Ni, graphene and lithium amide (LiNH2) additives on the dehydrogenation behavior of mechano-chemically synthesized crystalline manganese borohydride (Mn(BH4)2) and its solvent filtration/extraction
(Elsevier, 2018-04-01)Dehydrogenation properties of mechano-chemically synthesized crystalline Mn(BH4)2 hydride without and with ultrafine filamentary carbonyl nickel (Ni), graphene and LiNH2 were investigated. It is reported for the first time ... -
Extrusion-based 3D Printing and Characterization of Edible Materials
(University of Waterloo, 2018-01-19)3D printing food offers the ability to customize shapes, texture, as well as nutritional content. In addition, it can automate the cooking process to save time and produce meals on-demand to minimize waste. One potential ... -
SO2 Gas Abatement Using Ionic Liquids for Marine Applications
(University of Waterloo, 2018-01-19)Sulphur dioxide (SO2) emission has become one of the major challenging issues for clean marine transportation globally and especially in zero discharge zones Canada-wide with the implementation of the International ... -
Run-to-Run Optimization of Biochemical Batch Processes in the Presence of Model-Plant Mismatch
(University of Waterloo, 2018-01-18)An increased demand for novel pharmaceuticals such as recombinant proteins with therapeutic potential has lead to significant advances in the operation of biotechnological processes. In general, biochemical processes are ... -
Fibers-based Porous Structures for Oil Absorption Applications
(University of Waterloo, 2018-01-18)In the age of environmental awareness the persistent problem of oil spills and their frequent occurrences have urged researchers to advance and innovate the methods for oil spill remediation. Besides being a significant ... -
3D bioprinting of liver-mimetic construct with alginate/cellulose nanocrystal hybrid bioink
(Elsevier, 2018-03-01)3D bioprinting is a novel platform for engineering complex, three-dimensional (3D) tissues that mimic real ones. The development of hybrid bioinks is a viable strategy that integrates the desirable properties of the ... -
A systematic approach for modeling of waterflooding process in the presence of geological uncertainties in oil reservoirs
(Elsevier, 2018-03-04)In this paper, a systematic approach which is able to consider different types of geological uncertainty is presented to model the waterflooding process. The proposed scheme, which is based on control and system theories, ... -
In-plane and through-plane gas permeability of carbon fiber electrode backing layers
(Elsevier, 2006-11-08)The absolute gas permeability of several common gas diffusion layer (GDL) materials for polymer electrolyte membrane fuel cells was measured. Measurements were made in three perpendicular directions to investigate anisotropic ... -
Pore network modeling of fibrous gas diffusion layers for polymer electrolyte membrane fuel cells
(Elsevier, 2007-11-08)A pore network model of the gas diffusion layer (GDL) in a polymer electrolyte membrane fuel cell is developed and validated. The model idealizes the GDL as a regular cubic network of pore bodies and pore throats following ... -
Direct measurement of the capillary pressure characteristics of water-air-gas diffusion layer systems for PEM fuel cells
(Elsevier, 2008-10-01)A method and apparatus for measuring the relationship between air-water capillary pressure and water saturation in PEMFC gas diffusion layers is described. Capillary pressure data for water injection and withdrawal from ... -
Wettability and capillary behavior of fibrous gas diffusion media for polymer electrolyte membrane fuel cells
(Elsevier, 2009-10-20)The relationship of capillary pressure to liquid saturation for the water-air fluid pair in two different types of gas diffusion media (GDM) used in polymer electrolyte membrane fuel cell (PEMFC) electrodes is elucidated. ... -
Impact of Liquid Water on Reactant Mass Transfer in PEM Fuel Cell Electrodes
(Electrochemical Society, 2010)The breakthrough conditions (capillary pressure and liquid water saturation) in a fibrous gas diffusion medium (GDM) used in polymer electrolyte membrane (PEM) fuel cell electrodes have been studied experimentally by two ... -
On the role of the microporous layer in PEMFC operation
(Elsevier, 2009-03-01)The condition of liquid water breakthrough at the cathode of polymer electrolyte fuel cells (PEMFC) is studied experimentally and data on corresponding water saturation and capillary pressure are provided for gas diffusion ... -
A method for measuring relative in-plane diffusivity of thin and partially saturated porous media: An application to fuel cell gas diffusion layers
(Elsevier, 2017-07-01)A new experimental technique, extended from similar work on dry materials, is presented for measuring the in-plane components of the relative diffusivity tensor for partially saturated porous media. The method utilizes a ... -
Versatile and efficient pore network extraction method using marker-based watershed segmentation
(American Physical Society, 2017-08-16)Obtaining structural information from tomographic images of porous materials is a critical component of porous media research. Extracting pore networks is particularly valuable since it enables pore network modeling ... -
Pore network modeling of phase change in PEM fuel cell fibrous cathode
(Springer, 2017-12-01)A pore network model has been applied to the cathode side of a fuel cell membrane electrode assembly to investigate the mechanisms leading to liquid water formation in the cell. This model includes mass diffusion, liquid ... -
Development of Graphene-Based Electrically Conductive Polymer Nano-Composites
(University of Waterloo, 2018-01-10)Since a vast array of devices, instruments, and equipment in modern society is powered by electrical energy, it has been a very important research topic to develop and fabricate a material that effectively conducts ... -
Nanoscale X-ray Computed Tomography Based Modeling of Lithium-ion Battery Electrodes
(University of Waterloo, 2018-01-09)Because of their high energy/power density, long cycle life, and extremely low rate of self-discharge, lithium-ion batteries (LIBs) have dominated portable electronics, smart grid, and electric vehicles (EVs). Although ...