Production of Biodiesel from Vegetable Oil Using Microware Irradiation

The petroleum oil supply crisis, the increase in demand and the price eruption have led to a search for an alternative fuel of bio-origin in India. Among the alternative fuels, biodiesel is considered as a sustainable renewable alternative fuel to fossil diesel. Non-edible jatropha oil has considerable potential for the production of biodiesel in India. The production of biodiesel from jatropha oil using a conventional heating method takes more than 1h. In this work, microwave irradiation has been used as a source of heat for the transesterification reaction. A domestic microwave oven was modified and used for microwave heating of the reactants. The time taken for biodiesel production using microwave irradiation was 1 min. The fuel property analysis shows that the properties of jatropha oil biodiesel satisfy the biodiesel standards, and are close to the fossil diesel standards. From this work, it is concluded that biodiesel can be produced from vegetable oil using microwave irradiation, with a significant reduction in production time

Kinematic Synthesis and Analysis of Four Bar Mechanism Using Expert System

A considerable amount of research has been carried out on the synthesis of mechanisms with linkages. Such mechanisms can be used in many ways and in general, synthesis is carried out with reference to input positions and output positions. In this study, the expert system analyzes the four bar double rocker mechanism for given set of inputs which includes the distance of the ground pivots depending upon the space constraint for the mounting of the mechanism, the angles of swing of the input link and the angle of swing required by the output link. The results of the kinematic synthesis and analysis module of the expert system have been compared using a standard problem

Influence of pyrogallol antioxidant on performance and emissions of a CI fuelled with neem oil biodiesel

In current circumstances, energy is considered as a critical factor for economic growth, social development and human welfare. To bridge the ever rising energy requirement, biodiesel an alternative diesel fuel derived from waste vegetable oil, animal fats or vegetable oil is becoming increasingly popular in developing countries. Amongst which the biodiesel derived from neem oil has already proved as potential alternative fuel for CI engine. However the studies which investigate performance and emission characteristics with additives need to be investigated. In the present investigation the neem oil biodiesel was prepared using acid catalyzed esterification followed by trans-esterification process. The performance and emission characteristics of a single cylinder Compression ignition engine was carried with pyrogallol concentration of 0 parts per million (ppm), 250ppm, 500ppm and 750ppm with neem oil biodiesel. The engine performance and emission tests were carried out at a rated speed of 1500 rpm under different loading conditions. An improved performance and emission characteristics of engine was found with addition of pyrogallol as additives in neem oil biodiesel

EFFECT OF INJECTOR OPENING PRESSURE ON PERFORMANCE AND EMISSION OF LPG - METHYL ESTER OF MAHUA OIL DUAL FUEL ENGINE

One of variables, which affect the performance and emission of dual fuel engine is injection pressure. Hence in the present work, effect of Injector opening pressure on the performance of the engine was studied.  A four stroke single cylinder engine was modified to work in dual fuel mode. Three injector opening pressures (180 bar, 200 bar and 220 bar) were considered for the present work. Methyl ester of mahua oil was used as pilot fuel and LPG was used as primary fuel.    From the test results, it was observed that the injector opening pressure of 200 bar results in higher brake thermal efficiency. The higher injector opening pressure results in better atomization and peneatration of methyl ester of mahua oil. The exhaust emissions such as Smoke, unburnt hydro carbon and carbon monoxide of 200 bar is lower than other pressures

Comparative study on CI engine performance and emissions using a Novel Antioxidant Additive / N Kapilan

The depletion of conventional energy sources and environmental pollution related to use of these energy sources make biodiesel as a renewable replacement to diesel. The biodiesel can be used as an immediate replacement to fossil diesel as its properties are comparable to diesel. The main drawback of the biodiesel is its lower oxidation stability and prone to microbial growth which degrades the properties of biodiesel during storage. However, these problems can be overcome by adding suitable additives to the biodiesel. The non-edible neem oil is one of the feedstocks used for biodiesel in India. The neem biodiesel has lower oxidation stability and hence it is necessary to add suitable additive. The eucalyptus oil has better antioxidant and microbial inhibition properties and hence it was used as an additive in this work. The effect of adding this additive on the biodiesel properties, engine emissions and performance were studied. The engine tests were conducted on a compression ignition engine at different loads with various concentration of eucalyptus oil. The engine performance indicates that the thermal efficiency of the engine with biodiesel is lower than the diesel fuel while the engine exhaust emissions like HC, CO and smoke were lower with the biodiesel. The use of eucalyptus oil as an additive to the biodiesel at full load increases the engine thermal efficiency by 3.08%. Also, it lowers the engine exhaust emissions except NOx emission

EFFECT OF INJECTOR OPENING PRESSURE ON PERFORMANCE AND EMISSION OF LPG - METHYL ESTER OF MAHUA OIL DUAL FUEL ENGINE

One of variables, which affect the performance and emission of dual fuel engine is injection pressure. Hence in the present work, effect of Injector opening pressure on the performance of the engine was studied.  A four stroke single cylinder engine was modified to work in dual fuel mode. Three injector opening pressures (180 bar, 200 bar and 220 bar) were considered for the present work. Methyl ester of mahua oil was used as pilot fuel and LPG was used as primary fuel.    From the test results, it was observed that the injector opening pressure of 200 bar results in higher brake thermal efficiency. The higher injector opening pressure results in better atomization and peneatration of methyl ester of mahua oil. The exhaust emissions such as Smoke, unburnt hydro carbon and carbon monoxide of 200 bar is lower than other pressures

Production of Biodiesel from Vegetable Oil Using Microware Irradiation

The petroleum oil supply crisis, the increase in demand and the price eruption have led to a search for an alternative fuel of bio-origin in India. Among the alternative fuels, biodiesel is considered as a sustainable renewable alternative fuel to fossil diesel. Non-edible jatropha oil has considerable potential for the production of biodiesel in India. The production of biodiesel from jatropha oil using a conventional heating method takes more than 1h. In this work, microwave irradiation has been used as a source of heat for the transesterification reaction. A domestic microwave oven was modified and used for microwave heating of the reactants. The time taken for biodiesel production using microwave irradiation was 1 min. The fuel property analysis shows that the properties of jatropha oil biodiesel satisfy the biodiesel standards, and are close to the fossil diesel standards. From this work, it is concluded that biodiesel can be produced from vegetable oil using microwave irradiation, with a significant reduction in production time

IMPROVEMENT OF PERFORMANCE OF DUAL FUEL ENGINE OPERATED AT PART LOAD

Rising petroleum prices, an increasing threat to the environment from exhaust emissions, global warming and the threat of supply instabilities has led to the choice of inedible Mahua oil (MO) as one of the main alternative fuels to diesel oil in India. In the present work, MO was converted into biodiesel by transesterification using methanol and sodium hydroxide. The cost of Mahua oil biodiesel (MOB) is higher than diesel. Hence liquefied petroleum gas (LPG), which is one of the cheapest gaseous fuels available in India, was fumigated along with the air to reduce the operating cost and to reduce emissions. The dual fuel engine resulted in lower efficiency and higher emissions at part load. Hence in the present work, the injection time was varied and the performance of the dual fuel engine was studied. From the engine tests, it is observed that an advanced injection time results in higher efficiency and lower emissions. Hence, advancing the injection timing is one of the ways of increasing the efficiency of LPG+MOB dual fuel engine operated at part load

IMPROVEMENT OF PERFORMANCE OF DUAL FUEL ENGINE OPERATED AT PART LOAD

Rising petroleum prices, an increasing threat to the environment from exhaust emissions, global warming and the threat of supply instabilities has led to the choice of inedible Mahua oil (MO) as one of the main alternative fuels to diesel oil in India. In the present work, MO was converted into biodiesel by transesterification using methanol and sodium hydroxide. The cost of Mahua oil biodiesel (MOB) is higher than diesel. Hence liquefied petroleum gas (LPG), which is one of the cheapest gaseous fuels available in India, was fumigated along with the air to reduce the operating cost and to reduce emissions. The dual fuel engine resulted in lower efficiency and higher emissions at part load. Hence in the present work, the injection time was varied and the performance of the dual fuel engine was studied. From the engine tests, it is observed that an advanced injection time results in higher efficiency and lower emissions. Hence, advancing the injection timing is one of the ways of increasing the efficiency of LPG+MOB dual fuel engine operated at part load

Computational Fluid Dynamics Analysis of an Evaporative Cooling System

The use of chlorofluorocarbon based refrigerants in the air-conditioning system increases the global warming and causes the climate change. The climate change is expected to present a number of challenges for the built environment and an evaporative cooling system is one of the simplest and environmentally friendly cooling system. The evaporative cooling system is most widely used in summer and in rural and urban areas of India for human comfort. In evaporative cooling system, the addition of water into air reduces the temperature of the air as the energy needed to evaporate the water is taken from the air. Computational fluid dynamics is a numerical analysis and was used to analyse the evaporative cooling system. The CFD results are matches with the experimental results