S. Thulasi

Anna University, Chennai · Department of Mechanical Engineering

It has been hypothesized that molybdenum disulfide, also known as MoS 2 , is an attractive option for the synthesis of hydrogen with a high degree of efficiency. It is preferred to construct a hybrid based on MoS 2 in order to increase the catalytic efficiency, and it is vital to have a grasp of the nature of catalysis in order to make advances in...

Innovative materials with excellent cyclic performance become the mantra for energy storage. In this report, a novel 2D/3D NiS/Ni3S4 composite was fabricated by a one-pot hydrothermal process, in which 3D hierarchical microspheres were anchored in or covered by the interconnected 2D nanosheets. Phase–property relationship of NiS/Ni3S4 was establish...

The Coherent (AA6061-T6 and AA5083-H111) aluminum alloys were carried out using solid-state friction stir welding techniques and the welding parameters were improved using the response surface method by the design of experiment. Tests were conducted based on a five-level, four-parameter, and 31-run central composite design. Friction welding paramet...

This Paper determines an experimental study of dual-pass solar dryer with a bed tilt of 0.5° and varying oscillating frequency of drying chamber namely 1.25, 1.75 and 2.25 Hz for drying an agricultural produce namely non-parboiled paddy grains. The oscillations and bed tilt are provided to move the grains from entry to exit of the top bed and movin...

Here in, synthesis of Fe2(MoO4)3/reduced graphene oxide (RGO) nanocomposite was prepared by simple hydrothermal approach and used as high efficient dye sensitized solar cells (DSSCs). The decoration of RGO into the Fe2(MoO4)3 was proved by various physic-chemical studies such as XRD, SEM, TEM, Raman, UV, PL and BET analysis. The individual spherica...

A facile one step synthetic hydrothermal route was used to fabricate the Pt free Ni3S4/CoS2 heterostructure counter electrode and study the photovoltaic characteristics constructed by the sandwich type DSSC. The heterostructure combination of Ni3S4 nanoparticles onto flexible CoS2 nanosheets is crucial for achieving the in high I3⁻ reduction in the...

Discovery of electrode materials with superior light harvesting performance with high conductivity nature have become more and more urgent for the field of photovoltaics and portable electronic devices. Here in, synthesis of Fe 2 (MoO 4 ) 3 /reduced graphene oxide (RGO) nanocomposite was prepared by simple hydrothermal approach and used as high eff...

In this study, the thermal performance of a solar water heater while using Epsom salt as a phase change material and the temperature maintenance in water are explained in detail. Here the Epsom salt (Magnesium Sulfate hepta hydrate form) acts as an energy-storing medium that is used as mixed with water. Generally, the solar water heating system mai...

This present study experimentally investigates the hydrothermal performance of a variable header solar water heating system inserted with helix twists (HT) and helix twist with square-cut perforated (HTSCP). Experiments have been conducted between variable header inserted with simple helix and HTSCP with the Reynolds number range from 190 to 1245....

In this work the results of experimental analysis of solar parabolic dish thermoelectric generator (TEG) are presented. The model of TEG was designed for the use of solar radiation as a heat source. The solar parabolic dish is fabricated by using polished aluminium sheet as concentrated surface. Thermoelectric generator consists of commercial therm...

In the present investigation, aluminum LM6 alloy is used as a matrix and it was reinforced with various weight fractions of ZrO2 Such as 0, 3, 6, 9 and 12 wt%. The composite materials were cast using the stir casting method. The various stir cast samples were subjected to Energy Dispersive Spectrometry (EDS) analysis, mechanical and thermal analysi...

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 18...

Solar water heating system proves to be an effective technology for converting solar energy into thermal energy. The efficiency of solar thermal conversion is around 70% when compared to solar electrical direct conversion system which has an efficiency of only 17%. Hence solar water heaters play a vital role in domestic as well as industrial sector...