Discussion: “An Experimental Correlation of Oxides of Nitrogen Emissions from Power Boilers Based on Field Data” (Rawdon, A. H., and Sadowski, R. S., 1973, ASME J. Eng. Power, 95, pp. 165–170)

1974 ◽  
Vol 96 (3) ◽  
pp. 308-308
Author(s):  
H. E. Sommerlad
Keyword(s):  
Field Data ◽  
Oxides Of Nitrogen ◽  
Nitrogen Emissions ◽  
Experimental Correlation

An Experimental Correlation of Oxides of Nitrogen Emissions From Power Boilers Based on Field Data

1973 ◽  
Vol 95 (3) ◽  
pp. 165-170 ◽  
Author(s):  
A. H. Rawdon ◽  
R. S. Sadowski
Keyword(s):  
Field Data ◽  
Oxides Of Nitrogen ◽  
Study Program ◽  
Nitrogen Emissions ◽  
Fuel Burning ◽  
Pollution Study ◽  
Experimental Correlation ◽  
Thermal Nox ◽  
Nitrogen Excess ◽  
Temperature Furnace

A brief review of the kinetic formation of oxides of nitrogen is presented. Distinction is made between thermal NOx and fuel nitrogen NOx. The correlation of results is based both on data from literature and field data from Riley Stoker’s Air Pollution Study Program. The emission of NOx is shown to be capable of correlation based on fuel nitrogen, excess air, fuel, burning area heat release, combustion air temperature, furnace wall deposits, and furnace type. The results correlate to a standard deviation of 60 ppm.

Oxides of nitrogen emissions from turbulent jet flames: Part II—Fuel dilution and partial premixing effects

1993 ◽  
Vol 93 (3) ◽  
pp. 255-269 ◽  
Author(s):  
Stephen R. Turns ◽  
Franklin H. Myhr ◽  
Ramarao V. Bandaru ◽  
Ehren R. Maund
Keyword(s):  
Turbulent Jet ◽  
Oxides Of Nitrogen ◽  
Jet Flames ◽  
Nitrogen Emissions ◽  
Partial Premixing ◽  
Fuel Dilution ◽  
Turbulent Jet Flames

On the Premixed Combustion in a Direct-Injection Diesel Engine

1987 ◽  
Vol 109 (2) ◽  
pp. 187-192 ◽  
Author(s):  
A. C. Alkidas
Keyword(s):  
Diesel Engine ◽  
High Speed ◽  
Engine Speed ◽  
Direct Injection ◽  
Premixed Combustion ◽  
Injection Timing ◽  
Oxides Of Nitrogen ◽  
Nitrogen Emissions ◽  
Direct Injection Diesel Engine ◽  
Diffusion Burning

The factors influencing premixed burning and the importance of premixed burning on the exhaust emissions from a small high-speed direct-injection diesel engine were investigated. The characteristics of premixed and diffusion burning were examined using a single-zone heat-release analysis. The mass of fuel burned in premixed combustion was found to be linearly related to the product of engine speed and ignition-delay time and to be essentially independent of the total amount of fuel injected. Accordingly, the premixed-burned fraction increased with increasing engine speed, with decreasing fuel-air ratio and with retarding injection timing. The hydrocarbon emissions did not correlate well with the premixed-burned fraction. In contrast, the oxides of nitrogen emissions were found to increase with decreasing premixed-burned fraction, indicating that diffusion burning, and not premixed burning, is the primary source of oxides of nitrogen emissions.

Effect of EGR on Combustion and Emissions Characteristics of a CI Engine Fuelled with Waste Chicken Fat Biodiesel

2014 ◽  
Vol 592-594 ◽  
pp. 1481-1486 ◽  
Author(s):  
Naresh Kumar Gurusala ◽  
Richu Zachariah ◽  
Mozhi Selvan V. Arul
Keyword(s):  
Direct Injection ◽  
Cost Effective ◽  
Petroleum Products ◽  
Biodiesel Production ◽  
Oxides Of Nitrogen ◽  
Fuel Blend ◽  
Nitrogen Emissions ◽  
Chicken Fat ◽  
Future Demands ◽  
On The Road

Ever increasing demand and consequent rise in prices of petroleum products, stringent emission standards, the exponential depletion rate of fossil fuel reserves and escalation in the number of vehicles on the road have forced us to look for alternatives to meet the present and future demands of the energy requirements. Biodiesel production from waste oils and fats are cost effective methods which prevent the environmental pollution by proper disposal techniques. In this study, biodiesel was prepared from the waste effect chicken fat using the two stage esterification process. The present investigation deals with the cold exhaust gas recirculation (EGR) with the flow rates of 10, 20, 30% on a four stroke, single cylinder, direct injection (DI) diesel engine fueled with waste chicken fat biodiesel blends to reduce the NOxemissions of the engine. Experimental results showed higher oxides of nitrogen emissions when fueled with waste chicken fat biodiesel without EGR and found reduced NOxemissions about 25% when operating with B20 fuel blend with 30% EGR. The EGR level was optimized as 20% based on the significant reduction in NOx emissions, minimum possible smoke, CO, HC emissions and comparable brake thermal efficiency.

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