Browsing by Author "Satyanaryana, M. R. S."

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Comparitive analysis of NOx and smoke emissions of binary diesel/JME blends doped with Al2O3 nanoparticles stabilised by DEE as solvent and TRITON-X100 and BRIJ58 surfactants
(Rasayan Journal of Chemistry, 2021-12) Chaitanya, N. S. C.; ; Satyanaryana, M. R. S. ; Ghosh, Surajit; Javed, S.
According to this study, nanosized fuel carried additions to the tri-fuel blends on the engine performance and vibrations are investigated in detail. The tri-fuel mix, which is classified as DEE5BD25-Al2O3 np, is composed of diethyl ether (DEE) in the proportion of 5 percent, biodiesel Jatropha methyl ester (JME) in the proportion of 25 percent, and diesel in the proportion of 75 percent. DEE is a well-known high-cetane ignition improver and nanoparticle suspension stabilizer. To achieve the required results, the Al2O3 nanoparticles were sized at 25nm and concentrated from 25ppm to 50ppm in a binary diesel/JME mix. In order to suspend the nanoparticles in this fuel mix, the surfactants Trtion-X100 and Brij58 were selected independently and used in an ultrasonic liquid processor. The introduction of DEE into the binary diesel/JME mix has also changed it with nanoparticles and non-ionic surfactants, resulting in an improvement in the physicochemical characteristics. According to the findings of the testing, TFB with Al2O3 np had a 1.25 % greater brake thermal efficiency than clean diesel. The use of a higher percentage of Al2O3 np is not advised owing to the inactive heat dissipation in the fuel mix, as well as the possibility of a reduction in the chemical activity of the fuel catalyst. The addition of Al2O3 np to this fuel mix decreased NOx emissions by 200ppm compared to the use of straight diesel fuel alone. The results indicate that Brij58 outperformed the Trition-X100 surfactant in TFB, and that the amount of smoke produced is mostly dependent on the surfactant used. Triton-X100 produced less smoke when compared to the Brij surfactant, while Al2O3-B emitted 69.1 HSU compared to 57.7 HSU for Triton-X100. Triton-X100 released less smoke when compared to the Brij surfactant.
Experimental investigation of performance and emissions on low speed diesel engine with dual injection of solar generated steam and pongamia methyl ester
(Indian Journal of Science and Technology, 2011-01) Satyanarayana Murthy, Y. V. V.; Sastry, G. R. K.; Satyanaryana, M. R. S.
An experimental investigation has been carried out to examine the effects of steam injection into the intake manifold of a single cylinder, low speed, direct injection diesel engine fuelled with biodiesel palm methyl ester. Steam injection is generally carried out by non–conventional energy source. The addition of steam in to the intake manifold of the engine was carried out by vaporizing the water inside a boiler and heat is supplied by the solar concentrated parabolic dish. Biodiesels are known to produce higher NOx when compared to the neat diesel. Addition of steam to the combustion chamber of diesel engine has known effects of reducing the dangerous emissions of NOx but it is not clearly known about the engine performance and emissions. To examine this, an experimental investigation has been carried out on a single cylinder low speed diesel engine with steam injection in to the intake manifold during the suction stroke on the performance and engine emissions. Experiment results shows that there is a significant reduction in smoke levels and NOx during the steam injection both for the diesel fuel and pongamia methyl ester. Also there is a significant improvement of engine performance in terms of specific fuel consumption and brake thermal efficiency with steam injection.