CALCULATION OF OXYGEN CONCENTRATION IN AIR

Performance Improvement of PEM Fuel Cells Using Air Channel Indentation; Part I: Mechanisms to Enrich Oxygen Concentration in Catalyst Layer

A three dimensional, compressible, steady, one phase flow of reactant-product mixture in the air side electrode of proton exchange membrane fuel cell (PEMFC) is numerically studied in this paper. The mixture is composed of three species: oxygen, nitrogen and water vapor. The performance of the cell is enhanced by partial blockage of the flow field channels. Various types of these blocks also ca...

Effects of oxygen concentration on microbial growth in aerated palm oil mill effluent using oxygen enriched air membrane system

Aeration is one of the most important factors in biological wastewater treatment process. Through aeration, oxygen is supplied to the bacteria to allow their respiration to proceed rapidly and satisfy the biochemical oxygen demand (BOD). This study was carried out to determine the biological growth in aerated palm oil mill effluent (POME) when subjected to aeration using air of different oxygen...

Numerical Study of Non - Equilibrium Air Dissociation For Calculation of Electron Density in Hypersonic Flow

Monitoring and Zoning of PM2.5, PM10 and VOCs Concentration in Air of Gorgan City in 2016

Background & Aim: Increasing of air pollution in cities seriously threatens the health of its inhabitants.  PM2.5, PM10 and volatile organic compounds are amongst the air pollutants that their existence in the air in excess concentrations, leads to respiratory and cardiovascular problems, cancer and mortality. Therefore, the concentration of these pollutants in the air of Gorgan city was measur...

performance improvement of pem fuel cells using air channel indentation; part i: mechanisms to enrich oxygen concentration in catalyst layer

a three dimensional, compressible, steady, one phase flow of reactant-product mixture in the air side electrode of proton exchange membrane fuel cell (pemfc) is numerically studied in this paper. the mixture is composed of three species: oxygen, nitrogen and water vapor. the performance of the cell is enhanced by partial blockage of the flow field channels. various types of these blocks also ca...