combustion efficiency Articles

  • Effects of combustion efficiency on an Otto cycle

    This paper explains how the combustion efficiency influence the performance of an irreversible Otto cycle under conditions of varying fuel-air ratio. The irreversibility of Otto cycle comes exclusively from the expansion and compression processes. It is assumed that some fraction of the fuel's chemical energy cannot be fully released inside the engine because of incomplete combustion. Amount of ...


    By Inderscience Publishers

  • Pragmatic Efficiency Limits for Internal Combustion Engines

    This article gives an overview of the thermodynamic principles demonstrating that the maximum efficiency theoretically possible with a hydrocarbon fueled internal combustion engine is one hundred percent. From this basis the focus turns to articulating irreversibilities that naturally occur within the processes of converting the chemical energy in the fuel into shaft work. These losses are ...


    By HORIBA Europe GmbH

  • Measuring Combustion Efficiency Properly on 90% + Condensing Boilers & Furnaces - Case Study

    Combustion efficiency is a measurement of how well any given fuel is being burned and converted into useful energy (e.g.: heat, hot water, steam). The calculations are based on 3 MAJOR Factors: Chemistry of the burned Fuel (e.g. Propane, Natural Gas, Oil, etc) The CO2 percentage by volume after the combustion process The NET ...

  • Measuring Combustion Efficiency & Emissions from a Sugar Mill as a Cogeneration Process - Case study

    Issue For many years, sugar mills have burned bagasse, the fibrous byproduct of the processing of sugarcane, using special boilers that produce the steam needed to help break down the sugar cane. As the cost of powering this equipment by burning fossil fuels has steadily risen, the use of biofuel cogeneration as a source of power ...

  • High Temperature Combustion of Biogas

    High Temperature Combustion of Biogas Efficient combustion of biogas Controlled and concealed combustion Combustion temperature > 900°C Residence time more than 0.3 s Insulated combustion chamber High safety standard The HOFGAS® - IFL4c high temperature flare provides safe and environmentally-friendly combustion of biogas. The exhaust gas ...


    By Hofstetter BV

  • CHP efficiency for biogas

    Combined heat and power plant efficiency is a function of the conversion efficiency of the energy in the fuel gas to useful energy in the form of electricity and heat. A combined heat and power (CHP) plant is typically a reciprocating gas engine that uses the energy in the gas to drive a crank shaft. The crank shaft turns an alternator to ...


    By Clarke Energy

  • Improving Fuel Efficiency - Fred Weber, Inc. Realizes Significant Fuel Savings Using Combustion Catalyst Systems

    To see and hear the two Caterpillar 988Fs loading the crusher at Fred Weber's North Stone Quarry in Maryland Heights, Mo., one might think they are just like any other large wheel loaders working on any other quarry or construction job site in the Midwest. They look, sound and run like any well-maintained 988Fs would as they move quickly between the piles and the plant, but these are different; ...

  • High temperature combustion of landfill gas

    Type     Compact plant HOFGAS® - Efficiency 250 Commissioning     December 2001 Site     Storkohmo landfill, Kokkola (FIN) Situation Storkohmo landfill is located 400km north of Helsinki on Finland's west coast near the city of Kokkola. Based on local legislation requirements ( reduction of green house gas emissions ) the ...


    By Hofstetter BV

  • Improving steam power plant efficiency through exergy analysis: effects of altering excess combustion air and stack-gas temperature

    Modifications are examined to increase coal-fired steam power plant efficiency by reducing irreversibilities in the steam generator, including decreasing the fraction of excess combustion air, and/or the stack-gas temperature. Overall-plant energy and exergy efficiencies both increase by 1.4% when the fraction of excess combustion air decreases from 0.4 to 0.15, and by 3.5% when the stack-gas ...


    By Inderscience Publishers

  • Combustion of advanced non-toxic hybrid propellants

    Combustion characteristics and fuel regression behaviour have been studied for two fuels utilising 98% rocket-grade hydrogen peroxide (RGHP) as oxidiser. Two test series (A and C) involved a total of 13 firings of dicyclopentadiene (DCPD) fuel grains and series B involved nine firings of DCPD grains loaded with various amounts of lithium aluminium hydride, LiAlH4 (LAH). A laboratory-scale ...


    By Inderscience Publishers

  • Determination of optimum speed of an internal combustion engine by exergy analysis

    In this study, energy and exergy analysis are applied to the experimental data of an internal combustion engine operating on the conventional Otto cycle. The data are collected using an engine test unit which enables accurate measurements of fuel flow rate, combustion air flow rate, engine load, engine speed and all the relevant temperatures. Energy and exergy efficiencies are calculated for ...


    By Inderscience Publishers

  • Second law analyses on oxy-fuel combustion of gaseous fuels

    The exergy losses in the adiabatic premixed oxy-fuel combustion are quantitatively analysed. The global exergy loss decreases with increasing equivalence ratio. The exergy loss of chemical reaction is comparable to that of internal thermal energy exchange for low equivalence ratio while that of mixing process is negligible. To keep similar thermodynamic characteristics of conventional combustion, ...


    By Inderscience Publishers

  • China’s booming energy efficiency industry

    China’s energy efficiency industry is emerging as a high growth sector with the country projected to spend as much as Rmb2.1 trillion (USD300 billion) over the next five years on products and services that cut energy use. The key drivers of this development are the Chinese government’s determination to curb the country’s expanding energy appetite as well as higher production and energy costs. ...

  • Exergetic cost analysis and sustainability assessment of an Internal Combustion Engine

    This study deals with exergy cost analysis and sustainability assessment of a diesel engine, which runs with diesel no. 2 and two different biodiesel fuels at 1400 1/min test speed. Maximum total cost per exergy flow input rate and total exergy cost are found to be 12.5549 $/kW•year and 1728.312 $/year for one of the biodiesel fuels, respectively, while minimum values of these costs are ...


    By Inderscience Publishers

  • Hydrogen-diesel dual fuel combustion in a direct injection diesel engine

    Hydrogen is expected to be one of the most important fuels in the near future to meet the stringent emission norms. Hence in the present study, the combustion of hydrogen-diesel duel fuelled engine was investigated. Hydrogen was injected in the intake port during the suction stroke and diesel was injected inside the combustion chamber near TDC. The start of injection for hydrogen was maintained ...


    By Inderscience Publishers

  • Reasons for efficiency: Plain as the smudge on your face

    Remember soot? A long time ago, before global warming, getting rid of soot was considered a good reason to make our energy supply cleaner and more efficient. These small dirty particles, created from auto and power plant combustion, discolor walls and do worse to our lungs. Their harm is immediate, yet we seem to have forgotten this, as we’ve become consumed in energy debate about future worries. ...

  • Case study - Internal combustion engines and process heat-to-power application in Czech Republic

    Breclav-Postorna, Czech Republic Hot Water Temp:  88-92°C Hot Water Flow:  10 l/s KWth Average (Thermal Input): 600-750kWth Cooling:  Cooling Tower Cold Water Temp: 18-24°C Cold Water Flow: 12-14 l/s Green Machine Gross Output: Two machines at 25-33kWe each ElectraTherm installed two Green Machines at FOSFA, a manufacturer of phosphoric acid and ...


    By ElectraTherm

  • Gas turbine emissions and environmental impact of efficiency boosting techniques

    In this paper, environmental impact of gas turbine power generation equipment is reviewed and emissions sources are discussed. The types of pollutants in simple cycle gas turbine power plants and the associated air quality problems are compiled. Then, airborne pollutants which are generated in the combustion turbines are described and factors affecting emission formation are discussed. Also, the ...


    By Inderscience Publishers

  • Energy use efficiency of on-farm- and post-pineapples production in Nigeria

    The energy use and energy use efficiency in a group of pineapples plantations of a research institute in Nigeria was estimated. Total energy expenditure was 6,117.81 MJha –1 and energy output was 21,760 MJ/ha. The output/input energy ratio was 3.56. The different categories of energy input estimated are: direct energy (51.21%), indirect energy (48.79%), renewable energy (14.08%) and ...


    By Inderscience Publishers

  • Xp3 Fuel Efficiency and Maintenance Case Study by Pepsi Guatemala

    PEPSI Guatemala Fuel: Diesel Machine/Type: Truck/Motor Test: Fuel Efficiency and Maintenance OBJECTIVE Evaluation of Xp³ for Diesel’s effectiveness in transport units Nos. 950 y 945. Fuel consumption history, oil analysis, and injectors were checked before Xp³ was added. Oil analyses were conducted after 5,352 km, with and without Xp³. In addition, a detail record of ...


    By Xp3 Canada

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