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DC Field | Value | Language |
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dc.contributor.author | Prajapati, Yogesh | - |
dc.date.accessioned | 2019-10-21T09:17:59Z | - |
dc.date.available | 2019-10-21T09:17:59Z | - |
dc.date.issued | 2019-06-01 | - |
dc.identifier.uri | http://10.1.7.192:80/jspui/handle/123456789/8969 | - |
dc.description.abstract | From the birth of humans on this planet, energy becomes the crucial requirement for their continuous growth. Most of their energy demand is satisfied by fossil fuel resources. Due to improper extraction and use of excess fossil fuels, the environmental pollution is significantly increased. Uncertainties of fossil fuels, raising of petroleum prices, increasing demand of petrol and diesel, enhancement of environmental pollution, government's strict protocols and regulations forces the researchers to search for the alternative fuel, which should be economic, adequately available, energy conserved and environment friendly. Biodiesels are the monoalkyl fatty acid methyl esters that obtained from plant oils or animal fats through transesterification process. Biodiesels are the main research topic for alternative fuel of CI engine due to its renewability, vast availability and ability to reduce emissions. As most of the properties of biodiesels are comparable with diesel, it has the ability to substitute diesel fuel up to 20%. It is proved that up to certain percentage in the blend, the biodiesel improves the engine performance, reduces exhaust emissions and also causes less wear to the engine components. As farming and the agriculture are the main components of India's GDP, there is the significant opportunity of using biodiesels to reduce the foreign burden of petroleum fuels. Aim of most of the recent researches is to improve the use of plant oils-based biodiesels in the CI engine. For diesel, we have one resource that is crude oil, while for the biodiesels, there are variety of edible and non-edible oils. This creates the confusion to end user that which biodiesel is best for use in CI engine. So, it is necessary to find out which plant oil-based biodiesel is best for engine performance, combustion and emission. Since most of the research is related to the use of single or two separate biodiesel blends in CI engine, our aim is to find out the optimum percentage of two best biodiesels in a single blend with diesel at which the BTE, BP and net heat release are maximum, whereas BSFC, HC, CO, CO2, NOx and smoke emissions are minimum. The study is carried out on the single cylinder, four-stroke, water cooled, direct injection diesel engine. We are selecting the eight different biodiesels based on the literature and availability of them nearby city area. Using full factorial method, first we have formed the 28 different biodiesel blends, in which each biodiesel blend consists of 25-25% of any two biodiesels and 50% of diesel. The experiments are performed at constant operating conditions of compression ratio, injection pressure and the injection timing. The readings are taken three times to increase the confidence interval. BSFC, BTHE, Peak pressure, Ignition delay, NOx, HC and smoke density are selected as the base parameters for selecting the best two biodiesels and their optimum percentage. More weightage is given to emission parameters. Topsis and Promethee methods are used to assign the ranks to the results of first phase- 28 experiments and spearman's rank correlation coefficient is used to find the relative closeness of the ranks given by these two methods. Castor-Jatropha biodiesels are found as best two biodiesels according to the ranks of Topsis and Promethee methods. In the second phase of experiments, the percentage of two biodiesel is reduced from 50% to 30%, while the percentage of diesel is increased from 50% to 70%. Five different Castor-Jatropha blends are identified having percentage of Castor-Jatropha as 25%-5%, 20%-10%, 15%-15%, 10%-20% and 5%-25%. Total six experiments are conducted using these five different Castor-Jatropha blends and pure diesel. Weightage and the selection of attributes are as same as done in first phase of experiments. Topsis and Promethee methods are also used to assign the ranks to the results of second phase- 6 experiments and spearman's rank correlation coefficient is used to find the relative closeness of the ranks given by these two methods. The biodiesel blend having 25% Castor, 5% Jatropha and 70% diesel is found as an optimum blend in terms of engine performance, combustion and emission. | en_US |
dc.publisher | Institute of Technology | en_US |
dc.relation.ispartofseries | 16MMET19; | - |
dc.subject | Mechanical 2016 | en_US |
dc.subject | Project Report 2016 | en_US |
dc.subject | Mechanical Project Report | en_US |
dc.subject | Project Report | en_US |
dc.subject | 16MMET | en_US |
dc.subject | 16MMET19 | en_US |
dc.subject | Thermal | en_US |
dc.subject | Thermal 2016 | en_US |
dc.title | On Selection of Optimum Diesel/Biodiesel Blend for CI Engine Using PROMETHEE/TOPSIS Method | en_US |
dc.type | Dissertation | en_US |
Appears in Collections: | Dissertation, ME (Thermal) |
Files in This Item:
File | Description | Size | Format | |
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16MMET19.pdf | 16MMET19 | 2.86 MB | Adobe PDF | ![]() View/Open |
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