MIT Aurangabad

Navi Mumbai, India

MIT Aurangabad

Navi Mumbai, India
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Sakhare N.M.,MIT Aurangabad | Shelke P.S.,MIT Aurangabad | Lahane S.,MIT Aurangabad | Autee A.T.,MIT Aurangabad
Carbon - Science and Technology | Year: 2016

This paper presents a view on comparative study of use of diesel fuel with B20 biodiesel-blend (Diesel (80 %, by vol.) and Cotton seed oil (20 %, by vol.)) derived from Cotton seeds. As higher NOx emission and higher brake specific fuel consumption are main challenges for effective utilization of biodiesel fuel in a diesel engine, there is alarming need to find out the long term solution to reduce NOx emission for better utilization of biodiesel fuel in a diesel engine. Exhaust gas recirculation (EGR) is one of the useful technologies to reduce the NOx emission of a diesel engine. In the present research work test is conducted on 3 KW single cylinder, four stroke, water cooled, variable compression ratio (VCR) computerized diesel engine using diesel and B20 cotton seed biodiesel blend to study the effect of exhaust gas recirculation on performance and emissions characteristics of a diesel engine in terms of fuel consumption, thermal efficiency and emissions such as hydrocarbon (HC), carbon monoxide (CO), oxides of nitrogen (NOx) and carbon dioxide (CO2) of a diesel engine. The constant engine speed of 1500 rpm was maintained through-out the experiment test. The exhaust gas recirculation was varied as 4 % and 6 % at different loading conditions with diesel and B20 biodiesel. The results show that the significant reduction in oxides of nitrogen (NOx) with 4 % and 6 % EGR for B20 whereas marginal increment in CO and HC emissions. © Applied Science Innovations Pvt. Ltd., India.


Shelke P.S.,MIT Aurangabad | Sakhare N.M.,MIT Aurangabad | Lahane S.,MIT Aurangabad
Carbon - Science and Technology | Year: 2016

The Carbon dioxide (CO2) is one of the primary greenhouse gases emitted by various human activities. CO2 is naturally present in the atmosphere as part of carbon cycle. Human activities are altering the carbon cycle by adding or removing CO2 to the atmosphere. The main human activity that emits the CO2 is combustion of fossil fuels for energy and transportation. Compression ignition (CI) engines emit high amount of CO2 emission as it is the end product of complete combustion of hydro carbon fuels. Moreover, they emit higher NOx (nitrogen oxides) and PM (particulate matter) emissions and have higher fuel consumption. In the present study, experimental investigations were carried out on a CI engine under dual fuel mode with biodiesel as a pilot fuel and compressed natural gas (CNG) as a main fuel. The effects of 10 % and 20 % CNG energy shares on performance and emission characteristics of the engine at rated (100%) loads were studied. Experimental results indicate the beneficial of CNG addition on improvement in the engine efficiency, and reduction in NOx and CO2 emissions. The NOx and CO2 emissions decreased by 14.24 % and 30 % respectively at the rated load with biodiesel + CNG (20 % energy share) as compared to base diesel. No knocking combustion was observed during the tests which confirm the smooth operation. The dual fuel operation with combination of CNG-biodiesel is an effective method to reduce NOx and CO2 emissions with an additional benefit of lower specific energy consumption. © Applied Science Innovations Pvt. Ltd., India.


Mathad V.C.,Indian Institute of Technology Delhi | Lahane S.,MIT Aurangabad
Carbon - Science and Technology | Year: 2016

The Andaman and Nicobar Islands located southeast of Bay of Bengal in the Indian Ocean comprises of several small islands separated by sea over large distances which makes it impractical for electrifying all the islands by a single grid. A population of 380,581 (Census, 2011) living in these group of islands get their electricity demand catered through Diesel Generator Sets from 34 power houses with an aggregate capacity of 67.8 MW. Unavailability of any form of conventional fossil fuel reserves in the islands makes the diesel supplied in barges from southeastern coast of India as a sole lifeline for its power generation. Hence there is an urgent need for the development of a self sustainable model from non conventional energy resources to not only cater for the power demands but also to reduce the GHG emissions related with diesel powered generator sets. This paper discusses a self sustainable model for Andaman and Nicobar Islands that would cater the electrical demand through hydrogen produced from waste biomass resource which has a potential of replacing 86.65% of the diesel utilized in the diesel generator sets. The reduction in both the GHG emission and the cost of power generation would be evaluated to understand the impact of the self sustainable model on the environment and the livelihood of the local population of Andaman and Nicobar Islands. © Applied Science Innovations Pvt. Ltd., India.

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