scholarly journals Comparative Analysis of Alternative Fuels in Detonation Combustion

2016 ◽  
Author(s):  
Muhammad Hanafi Azami ◽  
Mark Savill
Keyword(s):  
Comparative Analysis ◽  
Alternative Fuels ◽  
Detonation Combustion

scholarly journals Use of diesel and emulsified diesel in CI engine: A comparative analysis of engine characteristics

2021 ◽  
Vol 104 (2) ◽  
pp. 003685042110209
Author(s):  
Zain Ul Hassan ◽  
Muhammad Usman ◽  
Muhammad Asim ◽  
Ali Hussain Kazim ◽  
Muhammad Farooq ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Negative Impact ◽  
Water Injection ◽  
Load Range ◽  
Performance And Emission ◽  
Injection Methods ◽  
Ci Engine ◽  
Ci Engines

Despite a number of efforts to evaluate the utility of water-diesel emulsions (WED) in CI engine to improve its performance and reduce its emissions in search of alternative fuels to combat the higher prices and depleting resources of fossil fuels, no consistent results are available. Additionally, the noise emissions in the case of WED are not thoroughly discussed which motivated this research to analyze the performance and emission characteristics of WED. Brake thermal efficiency (BTE) and brake specific fuel consumption (BSFC) were calculated at 1600 rpm within 15%–75% of the load range. Similarly, the contents of NOx, CO, and HC, and level of noise and smoke were measured varying the percentage of water from 2% to 10% gradually for all values of loads. BTE in the case of water emulsified diesel was decreased gradually as the percentage of water increased accompanied by a gradual increase in BSFC. Thus, WED10 showed a maximum 13.08% lower value of BTE while BSFC was increased by 32.28%. However, NOx emissions (21.8%) and smoke (48%) were also reduced significantly in the case of WED10 along with an increase in the emissions of HC and CO and noise. The comparative analysis showed that the emulsified diesel can significantly reduce the emission of NOx and smoke, but it has a negative impact on the performance characteristics and HC, CO, and noise emissions which can be mitigated by trying more fuels variations such as biodiesel and using different water injection methods to decrease dependency on fossil fuels and improve the environmental impacts of CI engines.

COMPARATIVE ANALYSIS OF ALTERNATIVE FUELS FOR VEHICLES

2015 ◽  
Vol 2 (2) ◽  
pp. 373-378 ◽  
Author(s):  
Лемешева ◽  
E. Lemesheva ◽  
Кочегаров ◽  
D. Kochegarov ◽  
Тихомиров ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Vegetable Oils ◽  
Alternative Fuels ◽  
Low Cost ◽  
Raw Material ◽  
Ecological Situation ◽  
Suitable Alternative ◽  
Material Resources ◽  
Motor Fuels ◽  
Harmful Substances

The growing demand for alternative motor fuels is dictated by aggravating energy and environmental problems. In article the analysis about possibility of use of alternative types of fuel for vehicles is carried out. Application of suitable alternative types of fuel will allow to improve in the future an economic and ecological situation in the country. Alternative fuel has to conform to the following requirements: to have necessary raw material resources, low cost, not to worsen operation of the engine, it is as little as possible to throw out harmful substances, whenever possible to be combined with the developed system of supply with fuel, etc. It is shown that natural gas and fuels derived from vegetable oils are most economical to use

COMPARATIVE ANALYSIS OF COMBUSTION SPRAY COCONUT OIL AND JATROPHA OIL

2016 ◽  
Vol 78 (5) ◽  
Author(s):  
Agus Wibowo ◽  
I. N. G Wardana ◽  
Slamet Wahyudi ◽  
Denny Widhi Yanuriyawan
Keyword(s):  
Comparative Analysis ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Coconut Oil ◽  
Negative Influence ◽  
Flame Spray ◽  
Jatropha Oil ◽  
Wide Range ◽  
Three Stages ◽  
Better Than

The negative influence of fossil fuels and the limited supply of fossil fuels to encourage researchers are looking for alternative fuels to renewable energy, namely coconut oil and jatropha oil. The purpose of this study was to determine the ratio of the combustion flame spray on burning long, wide combustion and combustion stage by studying the experimental results of burning coconut oil and jatropha oil, camera recording video at 420 fps in the spray nozzle tester with 1900 psi pressure. The results of the comparative analysis, combustion spray seed oil kapok better than castor oil, this is indicated in the data there is a difference of 20.73% the length of the combustion spray maximum of coconut oil than jatropha oil, the burning of coconut oil reach flames maximum is 164 cm and oils a distance of 130 cm, for width measurement obtained difference of 23.60% a wide range of flame spray a maximum of coconut oil than jatropha oil, coconut oil range of flame spray a maximum of 33.7 cm and jatropha oil is 28.8 cm, and the results of the analysis phase of burning, coconut oil occurs twice burning while the jatropha oil are three stages of combustion.

scholarly journals COMPARATIVE ANALYSIS OF EMISSIONS OF HARMFUL SUBSTANCES IN USING ALTERNATIVE TO NATURAL GAS BIOFUELS

2020 ◽  
Vol 20 ◽  
pp. 90-95
Author(s):  
O. Levytska ◽  
O. Sichevii
Keyword(s):  
Carbon Dioxide ◽  
Comparative Analysis ◽  
Natural Gas ◽  
Nitrogen Oxide ◽  
Alternative Fuels ◽  
Carbon Dioxide Emission ◽  
Comparative Characteristic ◽  
Harmful Substances ◽  
First Time ◽  
Emissions Of Harmful Substances

Feature of the topic and problem statement. The paper presents for the first time a comparative characteristic of emissions of harmful substances from the combustion of traditional fuels (natural gas) and biomass in fuel furnaces of boilers and recommended for the use the most environmentally efficient fuels. Comparative characteristics of emissions of harmful substances during the combustion of various types of fuel allows to determine the optimal type of fuel in the construction and commission of a new power plants, and also adds up-to-date information that will be useful in the scientific and scientific-popular discussions that are widespread today regarding the exhaustion and replacement of non-renewable energy sources, the safety of alternative fuels and their advantages in comparison with non-renewable ones. The purpose of the work is determining of the amount of emissions of harmful substsnces entering the environment during the combustion of natural gas and solid alternative fuels - wood waste, straw, flax straw and sunflower husk, their comparison, justification of calculation of the carbon content in the fuel of a given chemical composition. Findings. During the comparative analysis, high values for the carbon dioxide emissions for all the materials were considered. It is also noted that there are no emissions of suspended solid particles and sulfur diоxide during the combustion of natural gas and it is determined that at its combustion, methane emissions will be the smallest. In as-sessing the level of safety when using unrenewable and alternative fuels, the higher content of methane, dinitrogen oxide and unmethane volatile organic compounds and the lower content of nitrogen oxide, carbon dioxide in emissions from combustion of alternative fuels compared to emissions at combustion of unrenewable fuels were determined during the calculations. When burning natural gas there is mercury in small amounts in the emissions. Originality. The paper presents for the first time a comparative characteristic of emissions of harmful substances from the combustion of traditional fuels (natural gas and fuel oil) and biomass in fuel furnaces of boilers and recommended for the use the most environmentally efficient fuels. When making calculation works the following regularities are defined. In unrenewable and alternative fuels, a higher proportion of carbon passes into carbon dioxide emission and less to carbon oxide emission, while proportion of carbon in carbon dioxide emission is higher in unrenewable fuels. In addition, in unre-newable and alternative fuels, a large proportion of nitrogen is converted into nitrogen oxide emission, and less in emission of dinitrogen oxide, while the proportion of nitrogen in the emission of nitrogen oxide is also higher in unrenewable fuels. The paper defines a formula for calculating the carbon content in natural gas from the Central Asia-Center gas pipeline. The provided calculations and the introduction of simplified formulas serve as an example for the calculation of emis-sion factors and emissions in assessing the level of safety of existing equipment and can be used in the development of permit documents of enterprises that carry out emissions of harmful substances to the environment.

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