Biodiesels are a renewable energy source, and they have the potential to be used as alternatives to diesel fuel. The aim of this study is to investigate the wear and friction characteristics of Australian native first generation and second generation biodiesels using a four-ball tribo tester. The biodiesel was produced through a two-step transesterification process and characterized according t...

This paper presents a proposed three-Dimensional (3D) computational electrochemical simulation model for simulation and evaluation performance of Polymer Electrolyte Membrane (PEM) fuel cell. The proposed model is used to predict the output voltage, efficiency, hydrogen supply and study the transient response of PEM power plant when subjected to variable load connected to it. Additionally, the ...

Ignition of an ethylene fueled cavity in a supersonic flow was achieved through the application of two energy deposition techniques: a spark discharge and pulse detonator (PD). High-frequency shadowgraph and chemiluminescence imaging showed that the spark discharge ignition was passive with the ignition kernel and ensuing flame propagation following the cavity flowfield. The PD produced a high-...

LLE is presently involved in a series of experiments 'intended to demonstrate the ability of direct-drive laser fusion to ablatively compress microencapsulated deuterium-tritium (DT) fuel to 200 times its liquid density. This campaign has been structured into three parts. The first part was initiated in February 1985 and involved the implosion of glass microballoons filled with various pressure...

Fuel cells are receiving widespread attention as an alternate source for clean energy, and one of the most important developments are proton-exchange membrane fuel cells (PEMFC) which operate using hydrogen at low temperatures. In the U.S., there is a considerable effort underway to develop H2 as the preferred fuel due to the potential for decreasing our dependence on imported oil, and the envi...

Title of Document: IN SITU PROCESSING OF PtSn ELECTROCATALYSTS FOR CO TOLERANCE IN PEM FUEL CELLS Robert Utz, Master of Science, 2011 Directed By: Professor Greg Jackson Department of Mechanical Engineering Improved anode CO tolerance is a promising approach for integrating lowtemperature PEM fuel cells with hydrocarbon fuel processors in cost-effective systems for portable and stationary power...

Viscosity of vegetable oil is considered a constraint for its use as an alternate fuel for Internal Combustion(IC) engines. In this experimental investigation, the viscosity of cottonseed oil (CSO), which is considered a potential alternate fuel, is reduced by blending it in different proportions with diesel, and its viscosity at various temperatures was analyzed and used as a fuel in a compres...

The micro direct methanol fuel cell (MicroDMFC) is an emergent technology due to its special interest for portable applications. This work presents the results of a set of experiments conducted at room temperature using an active metallic MicroDMFC with an active area of 2.25 cm2. The MicroDMFC uses available commercial materials with low platinum content in order to reduce the overall fuel cel...