nox emissions Articles

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A method to extend flamelet manifolds for prediction of NOx and long time scale species with tabulated chemistry

by Inderscience Publishers  (Oct. 28, 2014)

Numerical simulation is currently used to help design low NOx devices for aircraft engines. In order to improve the prediction of pollutant species, combustion models based on tabulated chemistry have been commonly used in recent years. However, the short time scales of usual flamelet manifolds can lead to errors concerning the NO prediction in ...

A novel approach for modelling of NOx emission reduction in a tangentially fired coal boiler

by Inderscience Publishers  (Jun. 24, 2013)

In this research paper, predictive modelling of NOx emission of a 210 MW capacity pulverised coal–fired boiler and combustion parameter optimisation to reduce NOx emission in flue gas is proposed. The effects of oxygen concentration in flue gas, coal properties, coal flow, boiler load, air distribution scheme, flue gas outlet temperature and ...

AMETEK THERMOX Introduces the WDG-V Combustion Analyzer

by Ametek Process Instruments - THERMOX  (Jan. 27, 2015)

Abstract AMETEK THERMOX Introduces the 5th Generation THERMOX Combustion Gas Analyzer in a CONTROL Magazine Exclusive. WDG analyzers are based on a zirconium oxide cell that provides a reliable and cost-effective solution for measuring excess oxygen in flue gas as well as CO and methane levels.  Information from the Gas Analyzer allows ...

Wastewater Treatment Plant Monitors Greenhouse Gas Emissions

by Gasmet Technologies Oy  (Apr. 16, 2014)

Globally, little attention is paid to gaseous emissions from wastewater treatment processes. This contrasts greatly with the regulatory monitoring that is applied to the quality of water emissions from such facilities. However, in Helsinki, Finland, a large municipal wastewater treatment facility continuously monitors its emissions of greenhouse ...

NOx Emissions trading scheme repealed in the Netherlands — Global Impacts?

by Enhesa - Global EHS & Product Compliance Assurance  (Feb. 5, 2013)

The once-trailblazing Dutch Nitrogen Oxides Emission Trading Scheme (NOx ETS) is to be repealed: what are the effects? In recent years, Emissions Trading Schemes have gained momentum around the world.  Hundreds upon thousands of companies have had to adapt to be able to handle the effects of more stringent regulation. The Netherlands ...

European Union emission inventory report 1990–2012 under the UNECE Convention on Long-range Transboundary Air Pollution (LRTAP)

by European Environment Agency (EEA)  (Jun. 30, 2014)

This document is the annual European Union (EU) emission inventory report under the United Nations Economic Commission for Europe (UNECE) Convention on Long-range Transboundary Air Pollution (LRTAP) (UNECE, 1979). The report and its accompanying data constitute the official submission by the European Commission on behalf of the EU as a party, to ...

Effect of EGR on performance and emission characteristics of diesel engine at advanced injection timing

by Inderscience Publishers  (Mar. 31, 2014)

This work attempts to reduce the smoke density of diesel engine by advancing the fuel injection timing and also the NOx emission of the engine by introducing EGR at the advanced injection timing. A single cylinder 4.4 kW air cooled, naturally aspirated, stationary diesel engine was utilised for the investigation. Engine tests were conducted at ...

Exergy analysis of combustion characteristics and NOx emissions of a dual–fuel engine

by Inderscience Publishers  (Jun. 26, 2012)

The combustion characteristics and NOx emissions of compression ignition engines working on a dual fuel mode are investigated numerically and their exergetic efficiencies are determined. The model has been validated with available experimental results. The simulation results show that dual fuel engine combustion and trend of NOx ...

New Report Shows Decline in Carbon Dioxide and Other Pollutants from U.S. Power Plants, but State and Power Company Emissions Vary Widely

by Ceres  (May 28, 2014)

Electric Power Industry is Transitioning to Lower-Carbon Sources and Positioned to Meet New EPA Carbon Standards A new report on U.S. power plant emissions from the country’s top 100 electric power producers shows a downward trend in ...

Lagrangian modelling evaluation of the NOx pollution reduction due to electric vehicles introduction

by Inderscience Publishers  (Dec. 28, 2012)

In this paper, the problem of the atmospheric pollution due to the traffic emission from a large freeway is faced. To this aim, numerical simulations were performed and compared with measured data in a real case. The Lagrangian particle model includes a simple chemical scheme for the reactions between NOx and ozone. The results, compared with a ...

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