Indian Institute of Road and Transport Technology

Erode, India

Indian Institute of Road and Transport Technology

Erode, India

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Nagarani N.,KS Rangasamy College of Technology | Mayilsamy K.,Indian Institute of Road and Transport Technology | Murugesan A.,KS Rangasamy College of Technology
Renewable and Sustainable Energy Reviews | Year: 2014

This review presents when and how extended surface with heat exchanger have been used over the last 15 years in the field of heat transfer. They have been used in this field over a century, but their utilization increases more recent. For past 1 decade, most of the industries required high performance heat transfer components with less weight, volume and cost. The reported investigations are categorized into five major groups as follows: annular fins, elliptical fins and elliptical tube, pin fins, longitudinal fins and recent trend fins by experimental, numerical and analytical methods. Around 70 published articles related to fins with heat exchanger are briefly reviewed. This information is useful for future use of the different shapes of extended surface based on the space availability and cost. © 2013 Elsevier Ltd. All rights reserved.


Anita R.,Indian Institute of Road and Transport Technology
UPB Scientific Bulletin, Series C: Electrical Engineering | Year: 2014

This paper deals with a model of Photovoltaic interface with boost converter fed four-leg VSC (Voltage Source converter) with T connected transformer for power quality enhancement. A synchronous reference frame theory is planned for three-phase four-wire Shunt Active Filter (SAF) which includes converter, inductor and capacitor. The proposed shunt active filter provides harmonic reduction, reactive power compensation and neutral current compensation at the point of common coupling (PCC). The Photovoltaic array interface with boost converter is used to build up the voltage to match the DC link constraint of the four-leg VSC. The major benefit of this proposed approach is that, it will provide regular compensation for the complete day and grid interface converter can effectively be utilize to transfer of active power produce from the renewable resource. The T connected transformer is responsible for isolation to the VSC and passageway to the zero sequence fundamental harmonics current. To obtain the reference current in order to generate the firing pulse to the SAF, the whole arrangement is planned, established and validated by using MATLAB-SIMULINK environment.


Murugesan P.,KS Rangasamy College of Technology | Mayilsamy K.,Indian Institute of Road and Transport Technology | Suresh S.,National Institute of Technology Tiruchirappalli | Srinivasan P.S.S.,Knowledge Institute of Technology
International Communications in Heat and Mass Transfer | Year: 2011

The effect of V-cut twisted tape insert on heat transfer, friction factor and thermal performance factor characteristics in a circular tube were investigated for three twist ratios (y = 2.0, 4.4 and 6.0) and three different combinations of depth and width ratios (DR = 0.34 and WR = 0.43, DR = 0.34 and WR = 0.34, DR = 0.43 and WR = 0.34). The obtained results show that the mean Nusselt number and the mean friction factor in the tube with V-cut twisted tape (VTT) increase with decreasing twist ratios (y), width ratios (WR) and increasing depth ratios (DR). Subsequently an empirical correlation also was formulated to match with experimental results with ± 6% variation for the Nusselt number and ± 10% for the friction factor. © 2010 Elsevier Ltd.


Rajasekar E.,Indian Institute of Road and Transport Technology | Murugesan A.,KS Rangasamy College of Technology | Subramanian R.,Indian Institute of Road and Transport Technology | Nedunchezhian N.,Indian Institute of Road and Transport Technology
Renewable and Sustainable Energy Reviews | Year: 2010

Oxygenated fuels like biodiesel and alcohols have the potential to provide a reliable and a cost effective alternative to India's increasing future energy demands. They have a prospective future since they are renewable and can be produced easily in India's rural areas. Due to rapid industrialization and the increased number of vehicles on the road, the energy needs of the country are increasing rapidly. Oxygenated fuels can substantially replace the large demand for diesel to generate power for the industries and to fuel diesel engines of the vehicles. In spite of the many advantages of using them, most of the researchers have reported higher NOx emissions, which is a deterrent to the market expansion of these fuels. The present program aims to review the NOx emissions from the CI engines fuelled with oxygenated fuels. To meet the stringent emission norms, the various NOx reduction technologies like use of additives, retarded fuel injection timing, biodiesel emulsion with water, and exhaust gas recirculation are reviewed. The results of the most effective and low cost technique of EGR in DI diesel engine fuelled with biodiesel-diesel blends and tri-compound oxygenated diesel fuel blends (ethanol-biodiesel-diesel fuel blends and methanol-biodiesel-diesel fuel blends) are presented. © 2010 Elsevier Ltd. All rights reserved.


Prakash R.,Muthayammal Engineering College | Anita R.,Indian Institute of Road and Transport Technology
International Journal of Innovative Computing, Information and Control | Year: 2012

The aim of this paper is to design a Fuzzy Logic Controller-based Model Reference Adaptive Controller. It consists of Fuzzy Logic Controller (FLC) along with a conventional Model Reference Adaptive Control (MRAC) scheme. The idea is to control the plant by conventional MR AC with a suitable single reference model, and at the same time control the plant by FLC. In the conventional MR AC scheme, the controller is designed to realize plant output converges to reference model output based on the plant which is linear. This scheme is for controlling linear plant effectively with unknown parameters. However, using MR AC scheme to control the nonlinear system at real time is difficult. In this paper, it is proposed to incorporate an FLC in MR AC scheme to overcome the problem. The control input is given by the sum of the output of conventional MRAC and the output of FLC. The rules for the FLC are obtained from the conventional PI Controller. The effectiveness of the proposed control scheme is demonstrated by simulations. The proposed Fuzzy Logic Controller-based Model Reference Adaptive Controller (FLC-MRAC) can significantly improve the system's behavior and force the system to follow the reference model and minimize the error between the model and plant output. © 2012 ICIC International.


Murugesan P.,KS Rangasamy College of Technology | Mayilsamy K.,Indian Institute of Road and Transport Technology | Suresh S.,National Institute of Technology Tiruchirappalli
Chinese Journal of Chemical Engineering | Year: 2010

Heat transfer, friction factor and thermal enhancement factor characteristics of a double pipe heat exchanger fitted with square-cut twisted tapes (STT) and plain twisted tapes (PTT) are investigated experimentally using the water as working fluid. The tapes (STT and PTT) have three twist ratios (y = 2.0, 4.4 and 6.0) and the Reynolds number ranges from 2000 to 12000. The experimental results reveal that heat transfer rate, friction factor and thermal enhancement factor in the tube equipped with STT are significantly higher than those fitted with PTT. The additional disturbance and secondary flow in the vicinity of the tube wall generated by STT are higher compared to that induced by the PTT is referred as the reason for better performance. Over the range considered, the Nusselt number, friction factor and thermal enhancement factor in a tube with STT are respectively, 1.03 to 1.14, 1.05 to 1.25 and 1.02 to 1.06 times of those in tube with PTT. An empirical correlation is also formulated to match with experimental data of Nusselt number and friction factor for STT and PTT. © 2010 Chemical Industry and Engineering Society of China (CIESC) and Chemical Industry Press (CIP).


Ravi S.,Erode Building Educational Trust Group of Institutions | Subramanian R.,Indian Institute of Road and Transport Technology
International Review of Mechanical Engineering | Year: 2013

Diesel engines are widely used for transportation and power generation due to its better performance, reliability and durability. For the past three decades, there has been a consistent worldwide demand for the diesel fuel and quality, which resulted in degraded engine performance and increased pollutant concentration. At present demand for better diesel fuel is more. Diesel fuel quality can be improved either by better processing or with the use of additives. Additive treated fuel contributes to improve the performance, reduce emissions and gives longer life of the engine. Detergents and dispersant, cleanliness additive, cetane improver, combustion modifier and multifunctional additives are the major groups of additives. Detergent additives effectively prevent the buildup deposits, while dispersant include cleaning and disperse particulate matter in an extremely fine state. Cleanliness additives are organic detergents, to prevent deposits formation in the fuel injection system and maintain the injection system cleanliness over the useful life of the engine. Cetane improvers control the ignitability of diesel fuel, when it is sprayed into the combustion chamber and reduce the ignition delay period for the fuel. Combustion modifier is a group of metallic or ash containing additive, which is added in the fuel with a level of parts per million. The objective of the present paper is to give an overview about performance and emission of the combustion improving diesel fuel additives. © 2013 Praise Worthy Prize S.r.l. - All rights reserved.


Senthilraja R.,Indian Institute of Road and Transport Technology
ARPN Journal of Engineering and Applied Sciences | Year: 2016

The emission characteristics of a single cylinder four stroke compression ignition multi fuel engine when fueled with rice bran methyl ester and its 20% and 40% blends with diesel (on a volume basis) are investigated and compared with standard diesel. The suitability of rice bran oil methyl ester as a biofuel has been established in this study. Bio diesel produced from rice bran oil by transesterification process has been used in this study. Experiment has been conducted in various loads such as 0%, 25%, 50%, 75% and 100% at a fixed engine speed of 1500 rpm and at compression ratio of 17.5:1. The impact of fuel blend on exhaust gas emissions has been investigated and presented. The fuel blend which gives comparable emission with the standard diesel has been identified. The blends when used as fuel results in reduction of smoke and carbon monoxide, hydrocarbon comparable with the diesel and increase in nitrogen oxides emissions. © 2006-2016 Asian Research Publishing Network (ARPN).


Lakshmipathy J.,Arunai Engineering College | Kulendran B.,Indian Institute of Road and Transport Technology
International Journal of Refractory Metals and Hard Materials | Year: 2014

In the present study, the reciprocating wear behavior of 7075Al/SiC composites and 6061Al/Al2O3 composites that are prepared through liquid metallurgy route is analyzed to find out the effects of weight percentage of reinforcement and load at the fixed number of strokes on a reciprocating wear testing machine. The Metal Matrix Composite (MMC) pins are prepared with different weight percentages (10, 15 and 20%) of SiC and Al 2O3 particles with size of 36 μm. Hardness of these composites increases with increase in wt.% of reinforcement. However, the impact strength decreases with increase in reinforcement content. The experimental result shows that the volume loss of MMC specimens is less than that of the matrix alloy. However, the volume loss is greater in 6061Al/Al2O 3 composites when compared to 7075Al/SiC composites. The temperature rise near the contact surface of the MMC specimens increases with increase in wt.% of reinforcement and applied load. The coefficient of friction decreases with increase in load in both cases. © 2014 Elsevier Ltd.


Sureshkumar R.,Rmk Engineering College | Mohideen S.T.,Indian Institute of Road and Transport Technology | Nethaji N.,DDCSM Polytechnic College
Renewable and Sustainable Energy Reviews | Year: 2013

Extensive research work on heat transfer in heat pipe using conventional working fluids has been carried out over the past decade. Heat transfer in heat pipes using suspensions of nano meter-sized solid particles in base liquids have been investigated in recent years by various researchers across the world for finding new opportunities. The suspended nanoparticles effectively enhance the transport properties and heat transfer characteristics of base fluids in heat pipes. The study reveals an improvement in the thermal efficiency and reduction in the thermal resistance of heat pipe with nanofluids, than that of conventional working fluids. This paper reviews and summarizes recent research on fluid flow and the heat transfer characteristics of nanofluids in heat pipes and identifies perspective of nanofluids that can be used in heat pipes for further research. © 2012 Elsevier Ltd.

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