Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where S. Jaisankar is active.

Publication


Featured researches published by S. Jaisankar.


Energy Sources Part A-recovery Utilization and Environmental Effects | 2010

The Reaction Kinetics for Coir Pith Pyrolysis in Thermogravimetric Analyzer

K. N. Sheeba; J. Sarat Chandra Babu; S. Jaisankar

Abstract The decomposition behavior of biomass when subjected to thermal stress is different for each kind of biomass. Modeling a pyrolysis or gasification process is complex because the mechanism of decomposition is highly dependent on its mass loss characteristics. The decomposition behavior of coir pith using thermogravimetric analysis is studied for heating rates of 20 and 25 K/min, and the kinetics are predicted using the well known Arrhenius relationship. It is found that the decomposition characteristics of coir pith can be divided into three different zones designated as moisture removal, pyrolysis zone I, and pyrolysis zone II. The kinetic parameters for each zone are validated using a continuous pyrolyzer. It is found that the predicted kinetic parameters well represented the experimental pyrolysis process within an error of ±15%.


Energy Sources Part A-recovery Utilization and Environmental Effects | 2015

Performance Evaluation of a Flat Plate Collector Coupled Solar Still System

K. N. Sheeba; P. Prakash; S. Jaisankar

The comparative performance of a solar still and a solar still-flat plate collector system has been studied for the actual environmental conditions of Trichy, Tamilnadu, as a measure to improve the efficiency of the solar still. Performance of a solar still with fresh tap water and saline water has been studied followed by a combined solar still-flat plate collector system. It is observed that the combined solar still-flat plate collector daily efficiency was 20.4 and 23.6% more than still alone fresh water and saline water system, respectively. The productivity was 20.8 and 24.1% more than still alone fresh water and saline water system, respectively.


Asian Journal of Research in Social Sciences and Humanities | 2016

Performance Analysis of Conventional and Variable Header Thermosyphon Solar Water Heating System

S. Thulasi; S. Jaisankar

The effects of Nusselt number, friction factor and thermal performance are discussed by introducing the variable header in a solar water heater. The Experimentation has been carried out with conventional and variable header solar water heating systems. The Experimentation has been conducted under natural circulation with Reynolds number range of 183–563. The result revealed that the average Nusselt number is 3.86% higher in variable header compared to conventional one. Similarly the average thermal efficiency is 7.38% higher than the conventional header. The experimental Nusselt number, friction factor are compared with fundamental equations, the deviation falls within ± 8.25% and ± 8.39% respectively. The experimental results validated with CFD analysis and deviation falls within ± 16.57%.


Asian Journal of Research in Social Sciences and Humanities | 2016

Experimental Studies on Natural Circulation Solar Water Heating System Fitted with Helical Screw Tape Inserts

V. Arunprasad; P. Murugesan; S. Jaisankar

Experimental investigation of heat transfer and friction factor characteristics of thermosyphon solar water heater with helical screw tape of various twist ratios(Y=3, 4, 5 and 6) has been studied. Compared to other twist ratio, the minimum twist ratio 3, offers higher Nusselt number, friction factor and Thermal performance. The average Nusselt number, friction factor and thermal efficiency for helical screw tape collector with minimum twist ratio 3 are 13.86, 0.111 and 63.62% respectively. Whereas the increasing twist ratio decreases the above performance. The heat removal factor for screw tape collector with twist ratio 3 has 54.4% higher than plain tube collector. Correlations developed for friction factor and Nusselt number has been verified and deviation falls within ±13%.


Energy Sources Part A-recovery Utilization and Environmental Effects | 2015

Effect of Co-firing Coals of Varying Fuel Characteristics

G. Maddukuri; K. N. Sheeba; P. S. Biruli; S. Jaisankar

Utility and industrial steam generators in India are designed to burn coal for generating electricity, due to coal availability and economy. Rapid increase in coal-fired power projects increased the gap in demand and supply and therefore necessitated using available coals rather than plant design coal. Studies in different capacity boilers using coals of varying properties like gross calorific value, fixed carbon, volatile, moisture and mineral matter up to 100% in gross calorific value and 200% in mineral matter more than that of designed coal has been conducted. Performances of boilers were different than predicted due to variations in the fuel characteristics.


Energy Sources Part A-recovery Utilization and Environmental Effects | 2013

Steam Gasification Characteristics of Coir Pith in a Circulating Fluidized Bed Gasifier

K. N. Sheeba; J. Sarat Chandra Babu; S. Jaisankar

The effect of steam/biomass ratio, oxygen/carbon ratio on gas composition, gas heating value, gas yield, tar yield, carbon conversion, cold gas thermal, and overall thermal efficiency on a circulating fluidized bed biomass (coir pith) gasifier has been presented. The presence of steam altered the composition of product gas. A hydrogen yield of 43% has been observed for a steam/biomass of 4.5 and a temperature of 1,008°C due to the presence of potassium oxide in larger quantities in coir pith ash. As the steam/biomass increased, gas heating value decreased, the gas yield decreased, tar yield increased, and carbon conversion decreased.


Applied Thermal Engineering | 2009

Experimental studies on heat transfer and friction factor characteristics of thermosyphon solar water heater system fitted with spacer at the trailing edge of twisted tapes

S. Jaisankar; T. K. Radhakrishnan; K. N. Sheeba


Renewable & Sustainable Energy Reviews | 2011

A comprehensive review on solar water heaters

S. Jaisankar; J. Ananth; S. Thulasi; S.T. Jayasuthakar; K. N. Sheeba


Energy | 2009

Studies on heat transfer and friction factor characteristics of thermosyphon solar water heating system with helical twisted tapes

S. Jaisankar; T. K. Radhakrishnan; K. N. Sheeba


Energy Conversion and Management | 2011

Experimental studies on heat transfer and thermal performance characteristics of thermosyphon solar water heating system with helical and Left–Right twisted tapes

S. Jaisankar; T. K. Radhakrishnan; K. N. Sheeba

Collaboration


Dive into the S. Jaisankar's collaboration.

Top Co-Authors

Avatar

K. N. Sheeba

National Institute of Technology

View shared research outputs
Top Co-Authors

Avatar

T. K. Radhakrishnan

National Institute of Technology

View shared research outputs
Top Co-Authors

Avatar

J. Sarat Chandra Babu

National Institute of Technology

View shared research outputs
Top Co-Authors

Avatar

G. Maddukuri

Bharat Heavy Electricals

View shared research outputs
Top Co-Authors

Avatar

P. Prakash

National Institute of Technology

View shared research outputs
Top Co-Authors

Avatar

P. S. Biruli

Bharat Heavy Electricals

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge