Rajiv Gandhi Technical University

Bhopal, India
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Shrivastava N.,Rajiv Gandhi Technical University | Khan Z.M.,Rajiv Gandhi Technical University
Archives of Computational Methods in Engineering | Year: 2017

It is well known that fossil fuels are depleting day by day, and with the increase in the number of vehicles the pollution has reached at an alarming stage. The need of the hour is to find an alternate fuel as well as to demote the exhaust emission and enhance the performance parameters of the internal combustion (I.C.) engine. Researches on I.C. engines are being conducted in order to come to a feasible solution. Since performing experiments on an I.C. engine is both time consuming and costly therefore many soft computing techniques are being adopted in this field. The term soft computing refers to find the solution of an inexact problem. Different soft computing techniques being used in this field are Artificial Neural Network, Fuzzy Based Approach, Adaptive Neuro Fuzzy Inference System, Gene Expression Programming, Genetic Algorithm and Particle Swarm Optimization. The motive of this work is to review the researches being carried out in the field of I.C. engine on different types of engines with various alternative fuels using these soft computing techniques. © 2017 CIMNE, Barcelona, Spain

Sood A.,Rajiv Gandhi Technical University | Vyas S.,Rajiv Gandhi Technical University
International Journal of Mechanical Engineering and Technology | Year: 2017

In 21st century research on carbon capture and sequestration is totally based on optimizing the process of capture either by increasing the capture efficiency or by reducing the work input (energy consumption) in the process of capturing the carbon dioxide. This review article is prime focused on the present scenario of global greenhouse gas (GHG) emissions; aspects of new world with CCS with its merits-demerits and new emerging technological implementations. © IAEME Publication.

Shrivastava N.,Rajiv Gandhi Technical University
Journal of the Brazilian Society of Mechanical Sciences and Engineering | Year: 2017

India is one amongst the top five crude oil consumer of the world, and most of its oil demand is met by the import. Transportation sector shares the maximum diesel demand. An alternative renewable fuel is required to meet stringent emission norms and address rising traffic noise pollution. Biodiesel has shown potential as an alternative to diesel fuel. The emission of biodiesel was reported lower than the diesel fuel except NOx emission. The emulsion of water and diesel is considered as a method of reducing the NOx emission. In the present study, emulsion of water and Karanja Biodiesel, potential oil from Indian perspective, was prepared using the surfactants. Performance parameters, exhaust emissions, and, moreover, noise of engine fuelled with pure Karanja biodiesel, and its emulsion were investigated and compared with the pure diesel fuel. Experiments were conducted in four-cylinder diesel engine with varying loading conditions at constant RPM. Performance parameters investigated were BSFC and BTE. CO, HC, NOx, and smoke were investigated as emission parameters. Sound-pressure level was measured to assess the noise. The result showed that water-emulsified Karanja Biodiesel showed a significant reduction in NOx and smoke. The brake thermal efficiency was found slightly higher than the pure biodiesel and noise was lower than the pure diesel fuel. © 2016, The Brazilian Society of Mechanical Sciences and Engineering.

Flora G.,Rajiv Gandhi Technical University | Gupta D.,Rajiv Gandhi Technical University | Tiwari A.,Rajiv Gandhi Technical University
Critical Reviews in Therapeutic Drug Carrier Systems | Year: 2013

Curcumin, a naturally occurring polyphenolic compound, is known to have a wide range of therapeutic and pharmacological properties. Although it is a considerably promising compound, its poor water solubility and fast degradation profile make it compromise over its bioavailability way below the threshold level on administration. Over a period of time, a lot of emphasis has been given to improve the biodistribution of native curcumin, but it is only recently that the application of the field of nanotherapeutics has significantly improved its therapeutic efficacy. This is through the development of nanorange formulations of curcumin, popularly known as the "nanocurcumin." These attempts have given a strong platform to reap all the biological benefits from this phytodrug, which was not significantly plausible earlier. This review gives an insight into the reasons that make nanocurcumin a more therapeutically advanced drug than its native counterpart. It also discusses various nanometric formulations of curcumin that have been reported for its controlled and targeted delivery along with a critical comparison of its therapeutic efficacy with free curcumin. We also summarize the biological applications, patented technologies, and current status of the ongoing clinical trials related to nanocurcumin. © 2013 Begell House, Inc.

Arya L.D.,Shri Gs Institute Of Technology And Science | Choube S.C.,Rajiv Gandhi Technical University
International Journal of Electrical Power and Energy Systems | Year: 2012

This paper describes a technique for selection of buses in a sub transmission system for location of distributed generation (DG) and determination of their optimum capacities by minimizing transmission losses. The buses have been selected based on incremental voltage (dV/dP) sensitivities. Line flow constraints have been accounted. Type-3 DG i.e. wind turbine along with induction generator has been considered for the study. Differential evolution (DE) has been used to evaluate the optimum DG capacity and results have been compared with those obtained using bare bones particle swarm optimization (BBPSO) and multi-membered non-recombinative (μ + λ) evolution strategy (MMNRES). The developed algorithms have been implemented on standard 6-bus and 30-bus test systems. © 2012 Elsevier Ltd. All rights reserved.

Sahu J.N.,Indian Institute of Technology Kharagpur | Sahu J.N.,University of Malaya | Acharya J.,Rajiv Gandhi Technical University | Meikap B.C.,Indian Institute of Technology Kharagpur | Meikap B.C.,University of KwaZulu - Natal
Bioresource Technology | Year: 2010

The low-cost activated carbon was prepared from Tamarind wood an agricultural waste material, by chemical activation with zinc chloride. Activated carbon adsorption is an effective means for reducing organic chemicals, chlorine, heavy metals and unpleasant tastes and odours in effluent or colored substances from gas or liquid streams. Central composite design (CCD) was applied to study the influence of activation temperature, chemical ratio of zinc chloride to Tamarind wood and activation time on the chemical activation process of Tamarind wood. Two quadratic models were developed for yield of activated carbon and adsorption of malachite green oxalate using Design-Expert software. The models were used to calculate the optimum operating conditions for production of activated carbon providing a compromise between yield and adsorption of the process. The yield (45.26 wt.%) and adsorption (99.9%) of the activated carbon produced at these operating conditions showed an excellent agreement with the amounts predicted by the models. © 2009 Elsevier Ltd.

Thapar V.,Rajiv Gandhi Technical University | Agnihotri G.,Maulana Azad National Institute of Technology | Sethi V.K.,Rajiv Gandhi Technical University
Renewable Energy | Year: 2011

Accurate modelling is crucial in designing an optimum system. Wind speed distribution of selected site, hub height and power output curve of chosen wind turbine, are the main factors which influence the performance of wind turbines, and therefore, these must be properly accounted for during modelling of the wind turbines.This paper presents comparative study of various methods for mathematical modelling of wind turbines, with reference to three commercially available wind turbins, with the help of an algorithm developed.It has been found that modelling methods, based on fundamental equations of power available in the wind, are cumbersome to use and do not correctly replicate the behaviour of actual wind turbines.Models based on a presumed shape of power curve, though simple to use, also lack the desired accuracy; however, they give satisfactory response for higher annual average wind speeds.Modelling methods in which actual power curve of a wind turbine is used for developing characteristic equations, by utilising curve fitting techniques of method of least squares and cubic spline interpolation, give accurate results for wind turbines having smooth power curve; whereas, for turbines having not so smooth power curve, model based on method of least squares is best suited. © 2011 Elsevier Ltd.

Kumar S.,Rajiv Gandhi Technical University | Chaube A.,P.A. College | Jain S.K.,Rajiv Gandhi Technical University
Energy Policy | Year: 2012

Jatropha, a non-edible oil seed yielding plant has been identified by the Government of India to produce biodiesel under National Biodiesel Mission. Failure of phase-I of National Biodiesel Mission and likely failure of phase-II requires critical analysis of policy frameworks related to its long term sustainability. Indian biofuel promotion policies like Biodiesel Purchase Policy and National Biofuel Policy have failed to yield any visible results. No tangible ground work is visible as of now to ensure success of various government plans and policies related to adoption of jatropha biodiesel. It is clearly evident that some serious bottlenecks are delaying the adoption of jatropha biodiesel. Present work identifies important policy bottlenecks like availability of land, non-remunerative pricing policy and state fear relating to loss of revenue in the case of zero duty regimes. This paper attempts to explore and critically analyze present policies and possible options taking into account the recent Indian experiences for successful adoption of jatropha biodiesel. © 2011 Elsevier Ltd.

Flora G.,Rajiv Gandhi Technical University | Gupta D.,Rajiv Gandhi Technical University | Tiwari A.,Rajiv Gandhi Technical University
Interdisciplinary Toxicology | Year: 2012

Lead poisoning has been recognized as a major public health risk, particularly in developing countries. Though various occupational and public health measures have been undertaken in order to control lead exposure, cases of lead poisoning are still reported. Exposure to lead produces various deleterious effects on the hematopoietic, renal, reproductive and central nervous system, mainly through increased oxidative stress. These alterations play a prominent role in disease manifestations. Modulation of cellular thiols for protection against reactive oxygen species (ROS) has been used as a therapeutic strategy against lead poisoning. N-acetylcysteine, a-lipoic acid, vitamin E, quercetin and a few herbal extracts show prophylaxis against the majority of lead mediated injury in both in vitro and in vivo studies. This review provides a comprehensive account of recent updates describing health effects of lead exposure, relevant biomarkers and mechanisms involved in lead toxicity. It also updates the readers about recent advances in chelation therapy and newer therapeutic strategies, like nanoencapsulation, to treat lead induced toxic manifestations. Copyright © 2012 SETOX & IEPT, SASc.

Thapar V.,Rajiv Gandhi Technical University
Solar Energy | Year: 2015

Objective of this study is to analyse the impact of main factors, viz., load being supplied, wind speed, global irradiance, ambient temperature and battery bank capacity (BBC), on the performance of Hybrid Energy System (HES). Levelised Cost of Energy (LCE) and Loss of Power Supply Probability (LPSP) have been considered as performance indicators. Energy balance approach is used for calculating BBC and corresponding LCE at desired LPSP for the selected system configuration and inputs.It is concluded that for a given load, with increase in BBC, the LCE increases linearly, whereas LPSP decreases exponentially. With increasing load, the BBC required for supplying power at a given LPSP, and corresponding LCE initially increase gradually and then sharply and linearly. With increase in wind speed, BBC and corresponding LCE initially decrease sharply and then gradually; this variation is more prominent for higher loads. The BBC and corresponding LCE decrease with increase in global irradiance, the decrease is gradual for low loads; whereas, for large loads the decrease is initially sharp and then gradual. The BBC required for supplying power to a given load at a given LPSP, and corresponding LCE, increase almost linearly with increase in annual average of hourly ambient temperature. © 2015 Elsevier Ltd.

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