Browsing by Author "Suryanarayana Murthy, Ch."

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For rapid industrialization, a high degree of mechanisation has become inevitable, further increasing the capital investment. Mining statistics project a figure of 60 to 80% of the capital invested in a few new coal mining projects on mining machinery and around 5 to 15% on the development necessary to install the equipment. However, a mining property has a definite value only by virtue of its ability to produce profit over a span of years. The components and areas in which cost can be reduced are dealt with.
(Cost reduction in mining industry: a conceptual analysis) Uma Maheshwar Rao, K.; Sridhar, S.; Suryanarayana Murthy, Ch.
1989
Performance and emission characteristics of a Kirloskar HA394 diesel engine operated on fish oil methyl esters
(2010) Godiganur, S.; Suryanarayana Murthy, Ch.; Reddy, R.P.
The high viscosity of fish oil leads to problem in pumping and spray characteristics. The inefficient mixing of fish oil with air leads to incomplete combustion. The best way to use fish oil as fuel in compression ignition (CI) engines is to convert it into biodiesel. It can be used in CI engines with very little or no engine modifications. This is because it has properties similar to mineral diesel. Combustion tests for methyl ester of fish oil and its blends with diesel fuel were performed in a kirloskar H394 DI diesel engine, to evaluate fish biodiesel as an alternative fuel for diesel engine, at constant speed of 1500 rpm under variable load conditions. The tests showed no major deviations in diesel engine's combustion as well as no significant changes in the engine performance and reduction of main noxious emissions with the exception on NOx. Overall fish biodiesel showed good combustion properties and environmental benefits. © 2009 Elsevier Ltd. All rights reserved.
The effect of karanja oil methyl ester on Kirloskar HA394DI diesel engine performance and exhaust emissions
(Serbian Society of Heat Transfer Engineers, 2010) Godiganur, S.; Suryanarayana Murthy, Ch.; Reddy, R.P.
Biofuels are being investigated as potential substitutes for current high pollutant fuels obtained from the conventional sources. The primary problem associated with using straight vegetable oil as fuel in a compression ignition engine is caused by viscosity. The process of transesterifiction of vegetable oil with methyl alcohol provides a significant reduction in viscosity, thereby enhancing the physical properties of vegetable oil. The Kirloskar HA394 compression ignition, multi cylinder diesel engine does not require any modification to replace diesel by karanja methyl ester. Biodiesel can be used in its pure form or can be blended with diesel to form different blends. The purpose of this research was to evaluate the potential of karanja oil methyl ester and its blend with diesel from 20% to 80% by volume. Engine performance and exhaust emissions were investigated and compared with the ordinary diesel fuel in a diesel engine. The experimental results show that the engine power of the mixture is closed to the values obtained from diesel fuel and the amounts of exhaust emissions are lower than those of diesel fuel. Hence, it is seen that the blend of karanja ester and diesel fuel can be used as an alternative successfully in a diesel engine without any modification and in terms of emission parameters; it is an environmental friendly fuel.