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83 articles for “Convectional”
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Computational Heat Transfer Analysis of Corrugated Heat Sink Fins
Abstract: AbstractTo find the behavior of heat transfer and thermal management of novel type heat sink fins, a CFD analysis has been carried out. Available heat sink designs are studied for the thermal management of electronic devices, concentric solar devices, LED’s, etc. Electronic devices emerged in last decade and thus cooling of electronic devices with the efficient solution is still immature. In this study, corrugated type fins are introduced and analyzed …
Published in Journal of Thermal Engineering and Applications · Vol. 5, Issue 1, 2018 · pp. 17–27 Read article
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Twisted Tape Insert Effect on Heat Transfer Enhancement Placed in Smooth Tube: A Review
Abstract: Today heat exchangers are commonly used with twisted-tape inserts to improve convectiveheat transfer in various industries such as thermal power plants, chemical processing plants,air conditioning equipment, refrigerators, petrochemical, biomedical, and food processingplants. By using the twisted tape patch, the fluid flow swirls together, interrupting a thermalboundary layer on the surface of the pipeline. Heat exchanger thermal efficiency can beenhanced by heat transfer increase techniques. Tape insert is one of the …
Published in Journal of Thermal Engineering and Applications · Vol. 7, Issue 3, 2020 · pp. 25–28 Read article
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INVESTIGATION OF THERMAL CONDUCTIVITY OF SILVER NANOPARTICLES IN BASEFULID OF WATER ETHYLENE GLYCOL
Abstract: Nanotechnology is interface technologies that span many different science and applications area.When engineering, science and technology are conducted at the nanoscale is called asnanotechnology. It is about 1 to 100 nm (nano-meter) where nano denotes the scale range of onebillionth of meter. Nanotechnology refers the properties of atoms and molecules measuring 0.1 to1000 nm. Nanofluids are nothing but suspension of nanometer sized particles in the base of fluid.The base fluid …
Published in Journal of Thermal Engineering and Applications · Vol. 7, Issue 3, 2020 · pp. 13–19 Read article
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Signal Modeling, Control and Simulation of Boost Converter Using PV Cell
Abstract: DC-DC converters are switched power converters. They are used to convert one DC voltage to another DC voltage. It is inordinately used in industry as well as in research. The model of the converter system varies from the ON state to the OFF state. The major drawback of the boost converter is the uncontrolled supply of voltage and current. So, a convectional PID controller is designed to regulate the output …
Published in Journal of Control & Instrumentation · Vol. 6, Issue 3, 2015 · pp. 23–30 Read article
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Investigation of Heat Transfer in Concentric Annuli with Perforated Inserts
Abstract: The increasing necessity for saving energy and material imposed by the diminishing world resources and environmental concerns have prompted the development of more effective heat-transfer equipment with improved heat-transfer rates. The hydrodynamic boundary layer acts as main resistance for the transfer of heat from tube surface to fluid or vice-versa and many researchers are trying to improve the convective heat transfer rate with inserts in tubes to break the boundary …
Published in Journal of Experimental & Applied Mechanics · Vol. 9, Issue 1, 2018 · pp. 56–68 Read article
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A Review on Software Simulation of Thermo-electrical Generator
Abstract: AbstractEnergy plays a vital role in our environment. Everyday a new research comes to utilize the waste of energy. In our power plants and automobiles, lot of thermal energy is released into atmosphere, which is wasted and generates global warming. To enhance this process and for the utilization of energy, Thermo-electrical devices are used. Thermo-electrical devices utilize the thermal energy of the exhausts and convert it into electrical energy, to …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 9, Issue 3, 2019 · pp. 6–12 Read article
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PV System Performance in Variable Climatic Conditions
Abstract: This paper is focused to the study of the panel temperature operating under different climatic conditions; to this goal a detailed model has been developed to estimate the response of the panel temperature to various scenarios. The model has been designed based on energy balance, where temperature of the panel is estimated applying heat exchange processes with the environment, mainly convection and radiation, considering the effects of ambient temperature, wind …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 11, Issue 2, 2021 · pp. 11–27 Read article
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IoT Based Smart Power Grid.
Abstract: An inefficient power grid can be affected by human mistakes, data loss, and manual circuit and logbook operation, which are all parts of how a power grid works. An IoT-based power grid is introduced to address the issue. Here, we may measure the circuit's current and voltage as well as its active (kW), apparent (kVA), and energy (kWh) powers. We can also use a computer or a mobile device to …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 13, Issue 1, 2023 · pp. 35–40 Read article
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Solidification of Brass Casting in Green Sand Mould: A Numerical and Experimental Study
Abstract: Casting which is also known as founding, is one of the earliest metal shaping methods. It means the pouring of molten metal into the refractory mould then allowing it to solidify. After solidification removing of part from the mould either by breaking the mould or ejecting the mould part. Present study has been focused on solidification of brass in green sand mould formulation. Two-dimensional heat conduction equation in cartesian co-ordinate …
Published in Journal of Mechatronics and Automation · Vol. 2, Issue 3, 2015 · pp. 24–30 Read article
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Human Comfort inside the Vehicle by Using Internal Cooling Materials
Abstract: Human comfort is the most important aspect of the vehicle. Due to harsh sunlight and many other climatic conditions the human comfort level is breached. This breaching in the comfort level results in the abnormal physical conditions of the human. The occupants may feel uncomfortable which may cause unpleasant ride and journey. The most common problem encountered under this condition is the overheating of the vehicle -cabin due to parking …
Published in Journal of Nuclear Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 52–58 Read article
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Challenges In Sodium Cooled Fast Reactor Thermal Hydraulics
Abstract: Heat Transfer and Fluid flow phenomena (referred as Thermal Hydraulics) play a significant role in the safe and economical design of fast breeder reactors (FBR). The sodium cooled fast reactors have a very complex flow and temperature profile within the pool or the test vessel. The high temperature operating conditions (~540 deg.C) also impose stringent requirements on the thermal design of the components. The basic approach of thermal hydraulic design …
Published in Journal of Nuclear Engineering & Technology · Vol. 12, Issue 2, 2022 · pp. 33–47 Read article
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Circuit Topologies, Operation, Control Schemes and Modulation Techniques of Modular Multilevel Inverter
Abstract: The Modular Multilevel Converter (MMC) is one of the developing topology. MMC has several attractive features such as a modular structure, transformer-less operation, easily scalable in terms of voltage and current, low expense for redundancy and fault tolerant operation and excellent output waveforms quality. Due to these attractive features industry and researcher increased the interest in this converter. This interest results in the development of new power topologies, modulation strategies …
Published in Journal of Power Electronics and Power Systems · Vol. 7, Issue 1, 2017 · pp. 28–40 Read article
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Efficiency Measurement of Solar PV Panels
Abstract: With increasing awareness and technology developments, we strive to achieve a greener approach to energy production. Solar panels that use PV cells are popular for converting solar power into electricity. One of the problems in using PV cells to extract energy from sunlight is the temperature effect on PV cells. As the solar panel is heated, the conversion efficiency of light to electrical energy is diminished. Because solar panels can …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 3, Issue 3, 2016 · pp. 13–30 Read article
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Effect of Mould Cavity Thickness on Cooling Rate of Aluminium with Temperature Dependent Properties
Abstract: Solidification study of aluminium with temperature dependent thermal properties has been conducted. Effect of the mould cavity wall thickness on the cooling rate has been the target in the present work. Casting is earliest metal shaping process and has been used in many industries and households. Solidification during casting is the most crucial event which has been studied by the many researchers because it affects the quality of the casting …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 3, Issue 1, 2016 · pp. 31–35 Read article
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Numerical Analysis of Thermal Performance of Cylindrical Perforated Pin Fins for Aligned Arrangement
Abstract: Present paper investigates the thermal characteristics pertaining to laminar forced convection heat transfer enhancement achieved in a flat surface mounted with cylindrical perforated pin fins in a rectangular channel having a area of cross section 280 x150 mm2.The analysis was done for the range of angle of perforated holes from 00 to 600 for a constant value of Reynolds Number and fixed fin spacing of 40 mm using air as …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 7, Issue 1, 2020 · pp. 8–16 Read article
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Study of Heat Transfer in a Time Dependent Vertically Oscillating Micropolar Liquid
Abstract: AbstractThe study involves the vertical time periodic vibration of the system. This leads to the appearance of a modified gravity term in basic equation, collinear with actual gravity, in the form of a time-periodic field perturbation and is termed as gravity modulation or g-jitter in the literature. The aim of this study is to find the effect of small amplitude of gravity modulation on the onset of thermal convection between …
Published in Recent Trends in Fluid Mechanics · Vol. 5, Issue 1, 2018 · pp. 63–74 Read article
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A Review of Experimental and Numerical Investigation on the Heat Transfer in Micro-Channel Heat Exchanger for Various Nano Fluids
Abstract: AbstractA tremendous amount of work has been carried out on micro and nanoscale heat exchanger. Cooling requirement is increasing day by day in field of, high performance Aircraft gas turbine engines, Heat pumps, Air conditioning, Heat recovery ventilators, Integrated circuits (IC), VLSI devices, Computer chips, Printed circuit boards and biomedical applications etc. Many investigators focused on parameters such as Reynolds number, cross cut length, pressure drop, particle concentration of Nano …
Published in Recent Trends in Fluid Mechanics · Vol. 5, Issue 3, 2018 · pp. 1–7 Read article
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Heat and Flow Characteristics of Jet Impingement: Literature Review
Abstract: AbstractA comprehensive review on jet impingement heat transfer and flow characteristics of impinging synthetic jets were compared with continuous jets. Considering all the single phase heat transfer jet impingement has maximum heat transfer rate. A number of experimental arrangements as done to study the jet impingement such as jet impingement on a solid flat surface, rough surface, concave surface, convex surface, etc. A large number of papers dealing with experimental …
Published in Recent Trends in Fluid Mechanics · Vol. 7, Issue 1, 2020 · pp. 1–8 Read article
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Design and Thermal Analysis of Fins for Air Cooled Engine by Varying its Geometry
Abstract: An air-cooled motorcycle engine releases heat to the atmosphere through the mode of convection to facilitate this, fins are provided on the outer surface of the cylinder. The cooling fins allow the wind to move the heat away from the engine. The heat transfer rate depends upon the velocity of the vehicle, fin geometry and the ambient temperature. Low rate of heat transfer through fins is the main problem of …
Published in Trends in Machine design · Vol. 5, Issue 3, 2018 · pp. 37–53 Read article
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Design and Analysis of of Fins for Air Cooled Engine by Varying its Geometry & Material - A Review
Abstract: Fins are mechanical structures which are used to cool various structures via the process of convection to facilitate this, fins are provided on the outer surface of the cylinder. The cooling fins allow the wind to move the heat away from the engine. For fins, material like aluminium alloy is widely used. In most of cases simple fins geometry is preferred such as rectangular fins. . The heat transfer rate …
Published in Trends in Mechanical Engineering & Technology · Vol. 8, Issue 1, 2018 · pp. 41–45 Read article