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131 articles for “Convection”
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Mechanism of Microwave: Material Interaction and Its Effect on Material Properties
Abstract: Application of microwave energy for materials processing is emerging as a novel and innovative technology with many advantages over conventional processing, such as reduction in processing time resulting into energy and cost savings, providing finer microstructures, leading to improved mechanical properties and eco-friendliness etc. Microwaves are electromagnetic waves with wavelengths ranging from 1 m to 1 mm, which correspond to frequencies between 0.3 and 300 GHz. Microwave heating is a …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 18, Issue 2, 2016 · pp. 11–14 Read article
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Damage Potential of Extreme Wind Events– Downburst and Tornado
Abstract: Thunderstorms have always impressed humans and cumulonimbus cloud is one of the most visually striking and photogenic natural phenomena. Unfortunately, the thunderstorms are associated with hazardous weather. Severe thunderstorms are responsible for large amount of wind induced damage around the globe. Unlike large and continental cyclones, severe local storms intensify very rapidly and dissipate after causing damage. Lightning causes many fires around the world each year and leads to severe …
Published in Journal of Aerospace Engineering & Technology · Vol. 6, Issue 2, 2016 · pp. 28–46 Read article
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Enhancement in the COP of Thermoelectric Cooler Used for Cooling of Small Electronic Circuits
Abstract: Amidst growing environment concern, the need for alternative methods of cooling is on the rise, demanding higher intervention of technological advances. Conventional cooling systems working on CFC refrigerant pose threat to environment. The present work deals with performance investigation of thermoelectric cooler based on Peltier effect. Air cooling and water cooling systems are studied involving several parameter modifications. From the experimental work it is evident that optimum cooling is achieved …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 6, Issue 3, 2019 · pp. 20–23 Read article
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A Review on Software Analysis of Exhaust Thermoelectrical Generator
Abstract: Nowadays, heating and cooling is a major issue in the environment due to the global warming. Due to exhaust gases and unwanted pollution, TEG (thermoelectric generator) is a concept to utilize the heat energy of an engine for other works purposes. A major part of the energy is being engaged in such issues. Here, a study of conservation is being followed. TEG is a mechanical device that converts heat energy …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 6, Issue 3, 2019 · pp. 12–19 Read article
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Heat Transfer Enhancement in Solar Parabolic Trough Collectors Design Using C-shape, V-shape, and Reverse L-shape Roughness
Abstract: Solar energy can be collected and used in a large variety of ways including: passive daylighting,heating liquids and gasses, or generating electricity. Additionally, many energy sources such as wind,biomass, hydroelectricity, and even fossil fuels originate from the energy provided by the sun.Parabolic solar concentration systems are state-of-the-art or mature technology. Parabolic-troughsolar concentrating systems are parabolic-shaped collectors made of reflecting materials. Thecollectors reflect incident solar radiation onto its focal line toward …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 8, Issue 1, 2021 · pp. 26–41 Read article
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Analysis of Thermo Hydraulic Performance of Artificial V-Rib Roughness of Solar Air Heater: A Review
Abstract: Solar air heaters (SAHs) are the simplest energy conversion device which transforms incoming solar radiation to thermal energy. In traditional SAH the convective heat transfer rate is low. To improve heat transfer rate the artificial rib roughness is employed on the absorber plate. Although rib roughness increases the heat transfer rate, as well as the pressure drop due to friction. So in order to achieve maximum increment in thermo hydraulic …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 9, Issue 1, 2022 · pp. 18–28 Read article
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Efficiency improvement in aerothermal household heating systems
Abstract: This paper shows a new method to improve the aerothermal household heating system. The development bases the design on a forced convection assistance unit attached to the water radiators used for heating the house. The proposed design applies to any household heating system with wall radiators powered by an aerothermal unit. The household heating protocol is enhanced thanks to a quicker rate of room temperature rising, which allows setting up …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 10, Issue 3, 2023 · pp. 1–15 Read article
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Efficient Cooling with Peltier Modules: A Guide to Air Cooler Design
Abstract: The average annual temperature is rising due to the daily rise in global warming, which makes life more difficult and stressful for those who live in load-shedding-affected areas. Modern cooling technologies, such as air conditioners and coolers, are useless during the hottest parts of the day because they don't use inverters to generate backup electricity. In order to address the issues of portability, economy, and cost-effectiveness, the idea of alternative …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 10, Issue 2, 2023 · pp. 42–47 Read article
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Studies on solar chimney type agricultural crop dryer
Abstract: A natural convection solar chimney type dryer is studied experimentally to investigate the drying temperature distribution and drying rate of the crop. The dryer has been built with black painted solar collector and the chimney attached to create the draft. The performance of the solar chimney type dryer was carried out for the varying the different air inlet gaps. The temperature study showed that the maximum temperature is seen at …
Published in Research & Reviews : Journal of Agricultural Science and Technology · Vol. 12, Issue 1, 2023 · pp. 39–44 Read article
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Polyphenol Recovery Using Nanofiltration and Tight Ultrafiltration: A Review
Abstract: A viable strategy to lessen the environmental contamination of numerous by-products is pressuredriven membrane-based technology. The recovery, isolation, and separation of polyphenols from such by-products has recently received attention due to the growing interest in natural chemicals having biological activity. The potential to recover phenolics from various kinds of by-products has been observed particularly for tight filtration process and nanofiltration membranes. These membranes' productivity and ability to separate substances are …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 13, Issue 3, 2022 · pp. 31–35 Read article
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Modeling of Thermoelastic Hollow Cylinder by the Application of Fractional Order Theory
Abstract: The present work deals with the Mathematical Modelling of Thermoelastic Hollow Cylinder occupying the space by the Application of Fractional Order Theory. A hollow cylinder is subjected to convective boundary condition on upper and lower plane surface also zero temperature is maintained on the curved surfaces. The attempt made to analyze the temperature, displacement and thermal stresses of cylinder by using Integral transform technique. Numerical results are computed and represented …
Published in Research & Reviews : Journal of Physics · Vol. 8, Issue 1, 2019 · pp. 46–57 Read article