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Your search keyword '"Babu D"' showing total 923 results
Start Over Author "Babu D" Publication Type Academic Journals
923 results on '"Babu D"'

1. Development and Evaluation of a Small-Scale Organic Rankine Cycle for CSP Integration

Author

M K Murthi, Babu D Magesh, A Sivalingam, S Rahul, Iftekhar Hussain Beporam, and R Karthikeyan

Subjects
power production, renewable energy, cogeneration, orc, csp, micro solar, Environmental sciences, GE1-350
Abstract

The paper details the development, manufacturing, and evaluation of a compact Organic Rankine Cycle (ORC) system fueled by Concentrated Solar Power (CSP). The initial selection of the starting point of the cycle is described, considering the operational conditions of the ORC (such as the properties of the ambient temperature and solar field) and operational limitations. The study outlines the construction of a radial turbine generating 3 kW of power and conducts numerical simulations of fluid flow within the turbine components such as the nozzle and wheel. The course includes system engineering, focusing on the computation and selection of critical components including pumps, exchangers, and sensors. The findings of the laboratory tests are presented in the second part. The experiment utilized a thermal oil boiler for heating. The results show an isentropic efficiency of around 42% and a cycle efficiency of 6% under the initial test conditions, indicating promising performance over a wide range of pressure drops.

Published
2024
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2. Enhancing Wind Energy Potential Assessment with Three-Parameter Weibull Distribution: A Comparative Analysis using MATLAB

Author

K Kannakumar, M K Murthi, G Ravivarman, Babu D Magesh, Babu Loganathan Ganesh, R Karthikeyan, and R Girimurugan

Subjects
weibull distribution, wind energy, rayleigh, era 5, rmse, Environmental sciences, GE1-350
Abstract

To determine the wind energy potential, the probability density function is typically used. For data distribution with modest wind speeds, this paper developed a three-parameter Weibull model. The distribution factors were determined using the maximal likelihood technique. The world renowned, user-friendly programming language Matrix Laboratory (MATLAB) processes all data that needs analysis. A comparison was made between the 3-factor Weibull, the 2-factor Weibull, and Rayleigh through R2 and root mean square error (RMSE). The ECMWF Reanalysis v5 (ERA 5) reanalysis's hourly wind speeds are statistically represented by these three distributions. Due to its placement between the optimal R2 and RMSE, the three-parameter Weibull model achieves good results. Weibull with three parameters has a R2 of 0.9898, Weibull with two parameters has a R2 of 0.9886, and Rayleigh has a R2 of 0.5162. The root-mean-squared errors (RMSEs) for Rayleigh, 2-factor and 3-factor Weibull, are 0.0082 and 0.0070, respectively.

Published
2024
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5. Synthesis, characterization, second and third order non-linear optical properties and luminescence properties of 1,10-phenanthroline-2,9-di(carboxaldehyde phenylhydrazone) and its transition metal complexes

Author

Prasad G. Krishna, Prashanth S.S.P., Srivastava S., Nageswara Rao G., and Babu D. Rajesh

Subjects
transition metal complexes, 10-phenanthroline-2, 9-dialdehyde, second harmonic generation (shg), dfwm, luminescence, Chemistry, QD1-999
Abstract

The requirement for materials which exhibit good second and third order non-linear optical properties and also for materials which could sense metals in trace quantities has kindled renewed investigations. Organometallics and coordination compounds show a lot of promise as new NLO materials combining the variety of organic moieties with the strength and variable oxidation states of metals. Especially ligands which selectively detect industrial pollutants like Cd and biologically significant metals like Zn are necessary. In the current work the ligand 1,10-phenanthroline-2,9-di(carboxaldehyde phenylhydrazone) (L) and its Ni2+, Co2+, Fe2+, Zn2+, Cd2+ and Ir3+ complexes were synthesized. These were characterized by UV-Vis, FT-IR, 1H NMR, MS and CHN microanalysis techniques. The complexes were shown to have the formula [ML]2+. The second and third order NLO of the ligand and its complexes were recorded These new compounds were found to have same order of third order nonlinear optical susceptibility as that of CS2 and their second hyperpolarizability was an order of magnitude greater than that of C60. Furthermore the ligand also displays selective luminescence sensing of metals ions Fe2+ and Ir3+ even in the presence of other metal ions.

Published
2017
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