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1991 articles for “and temperature” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Simplified Models for Some Thermodynamic Properties of Saturated Water in a Pressurized Water Reactor
Abstract: The properties of water and steam in a pressurized water reactor (PWR) need constant monitoring to understand what goes on in the PWR. Such properties include the thermodynamic properties, namely, specific volume, specific enthalpy, specific entropy and specific heat. This work is focused on calculating these properties of saturated water by using a simplified model within the temperature range that is applicable to PWR. The model parameters for each property …
Published in Journal of Nuclear Engineering & Technology · Vol. 3, Issue 3, 2013 · pp. 12–17 Read article
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Tracer Diffusion of 54Mn and 60Co in SS 316 LN in Presence of Sodium
Abstract: The diffusivity of cobalt and manganese in cold-worked and vacuum-annealed AISI type. SS 316 LN in presence of sodium in the temperature range 773–873 K was measured by the standard tracer technique. In vacuum-annealed SS 316 LN specimens, the penetration depth of cobalt was only up to 2–5 μm from the surface even after diffusion annealing for a long duration of ~ 5000 h in the temperature range from 823 …
Published in Journal of Nuclear Engineering & Technology · Vol. 3, Issue 3, 2013 · pp. 45–57 Read article
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Thermodynamic Concept to Evaluate the Performance of Organic Base Ion Exchange Resins Purolite NRW-5050 and Indion-870 Using Short-Lived Radioisotopes
Abstract: The present paper deals with application of short-lived radiotracer isotopes to understand the performance of Purolite NRW-5050 (nuclear grade) and Indion-870 (non-nuclear grade) anion exchange resins. The performance evaluation was done based on thermodynamics of iodide and bromide ion-isotopic exchange reactions. It was observed that for Purolite NRW-5050 resins during the bromide ion-isotopic exchange reaction, the enthalpy and energy of activation values calculated were 3287.8 and 5869.3 J.mol-1 respectively, which …
Published in Journal of Nuclear Engineering & Technology · Vol. 5, Issue 1, 2015 · pp. 8–19 Read article
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Numerical Simulation of Entrained-flow Coal Gasification: A Study on Particles History
Abstract: Normal 0 false false false MicrosoftInternetExplorer4 Studies of coal particle history during coal gasification inside the gasifier are very limited. A comprehensive 3D numerical simulation of entrained-flow coal gasification is conducted. The Eulerian-Lagrangian approach is applied to solve the Navier-Stokes equations and the particle dynamics. The finite rate/eddy dissipation model is used to calculate the rate of gasgas phase reactions, whereas only finite rates are used for solid-gas phase reactions. …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 6, Issue 3, 2016 · pp. 9–18 Read article
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Finite Element Simulation Analysis of Concrete Arch dams: A Review
Abstract: The loads on the arch dam and the physical properties of materials of the dam and the bedrock are undefined, and can be designated with random variable. Due to the huge volume, the complex structure of the dam and excessive random variable, the static analysis of the dam is tough. The dam is a higher order statically unspecified structure, and the variation of the temperature obviously marks the stress and …
Published in Journal of Offshore Structure and Technology · Vol. 4, Issue 3, 2017 · pp. 23–30 Read article
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Design and Development of Compact Humidifiers for Bench-top Chambers
Abstract: All products which are used in daily life have to serve in different climatic condition globally such as temperature, rain, humidity, etc. Hence, the products have to be tested under these conditions with the help of climatic chambers. There is a demand for a smaller version of climatic chambers called as bench-top chambers. Bench-top chambers require a compact humidifier, which can work on all humidity requirements set by the user. …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 5, Issue 2, 2018 · pp. 26–35 Read article
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A review on Design of Cascade Vapour compression Refrigeration System
Abstract: Cascade refrigeration system is an ultra-low temperature multi-stage refrigeration systems operating at ideal low temperatures ranging from -30°c to -100°c.Cascade system is a frigid system that adopts dual refrigerants having diverse boiling points, that escape through the medium of their particular frigid cycle and are combined by a cascade heat exchanger. Cascade refrigeration systems are used for obtaining faster cooling in a much lower time than the normal vapour compression …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 5, Issue 3, 2018 · pp. 1–6 Read article
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Performances of NH3-H2O Vapour Absorption Refrigeration Cycles
Abstract: To achieve vital enhancements on micro-scale to buildings, cooling, heating and power systems for residential and light-weight industrial buildings, absorption cooling technology gift a chance. Their resultant effects are effective, energy economical and economical recent developments in. This study thus contributes a vital information and methodology within the development, fabrication and application of an absorption icebox as a higher various to the normally used mechanical device refrigerators. 2 fluid gas …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 6, Issue 1, 2019 · pp. 9–13 Read article
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Efficient Cooling by Solar Hybrid Air Conditioning System
Abstract: This paper introduced about general properties of solar hybrid air conditioning system consisting of R22 refrigerant in vapour compression refrigerant cycle with solar still system construction. The solar still is a construction made with GI sheet box with tapered shape and a glass is kept over the tapered box at 18˚ angle and box is coated with black paint for trapping solar radiation inside the box by greenhouse effect. This …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 6, Issue 2, 2019 · pp. 1–5 Read article
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Super-earths (Exo-planets): How Much Probability of Colonization of Life is There?
Abstract: On January 4th, 2009 American Astronomical Society in Washington D.C, the Kepler team announced that it had identified first new exo-planet and after that up to 2013, Kepler had identified nearly 4034 exoplanets or Super earth outside our solar system where some chemical conditions that the pre-biotic earth had might have prompted life, at least in form of microbes. Scientists so far announced the lists of earth-sized 4034 exo-planets with …
Published in Journal of Aerospace Engineering & Technology · Vol. 9, Issue 1, 2019 · pp. 30–39 Read article
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Investigation of Structural and Magnetic Properties of Gadolinium Substituted in Nickel – Cobalt Nano ferrite by Chemical Route
Abstract: Ni0.5Co0.5GdyFe2-y O4 nanoparticles were successfully synthesized via chemical route. The Gadolinium (Gd3+) doped in Nickel (Ni) cobalt (Co) Nano Ferrite at various compositions such as Ni0.5Co0.5GdyFe2-y O4 (where y=0.025, 0.050, 0.075, 0.1, 0.125, 0.150) were synthesized by a simple cost-effective method involving sol-gel auto combustion process. Synthesized samples were sintered at 6000C temperature. The structural and magnetic properties of synthesized Gd3+ doped Nickel-Cobalt Nano Ferrite was investigated and presented in …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 9, Issue 1, 2019 · pp. 21–26 Read article
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Waste Heat Driven Hybrid Refrigeration System: A Review
Abstract: The objective of this paper is to describe a newly-developed hybrid refrigeration system .This hybrid refrigeration system , combination of a vapor compression refrigeration system driven by the high grade electrical energy and heat driven an absorption refrigeration system .Absorption system activated by waste heat available from the condenser of vapour compression system to produce the required necessary temperature in generator to vaporize refrigerant. However an electrical heater in the …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 7, Issue 2, 2020 · pp. 49–57 Read article
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Evaporative Cooling By Using Different Porous Materials
Abstract: The method of evaporative cooling involves raising the air temperature by causing water vapour in an airstream to evaporate. Waterneeds the latent heat of vaporisation to evaporate, and this heat is produced by ambient air and a drop in air temperature. A porousmedium is necessary for both direct and indirect evaporative cooling in order to allow heat and mass transfer between the medium'swater and the air moving through it, or …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 9, Issue 2, 2022 · pp. 29–37 Read article
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Novel Thermal Management of BIPV System-Liquid Earth-Based Cooling
Abstract: The application of solar PV has tremendously increased in recent years owing to the improved efficiency and economic feasibility. Among the several applications of PV panels Building integrated photovoltaics has become a hot topic in research. However improper thermal management of solar panels is the main cause of a decline in efficiency and longevity. In this regard, water-based coolingsystems, integrating cooling ducts, using optical filters, phase change materials, and air-passed …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 10, Issue 2, 2023 · pp. 1–18 Read article
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OCEAN THERMAL ENERGY CONVERSION (OTEC) – A MINIATURE WORKING MODEL
Abstract: Being the student of Andhra University College of Engineering, as a project for the partial fulfillment of B.Tech Degree inMechanical Engineering, a miniature working model of Ocean Thermal Energy Conversion (OTEC) has been preparedwith a cold water pump, a raw water pump and a small turbine and condenser using RANKINE cycle which can generateapproximately 25W electrical power. For getting the cold water at 4 0 C, which is available at …
Published in Journal of Offshore Structure and Technology · Vol. 10, Issue 3, 2023 · pp. 1–9 Read article
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Studies on the enhancement of sensitivity in SOI-MEMS Piezoelectric Accelerometer for low frequency applications
Abstract: In the present paper the design, fabrication and characterization of the SOI-MEMS piezoelectric accelerometer is reported. MEMS Accelerometers developed by many researchers in the literature have achieved the necessary high sensitivity at high frequencies. The main challenge of this work is to design an accelerometer with high sensitivity at low frequencies. The analytical modeling and FEM analysis were performed on the device to arrive at the optimized design of the …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 20, Issue 1, 2018 · pp. 42–52 Read article
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New Methods of Solving of the Problem of Degassing Liquid Fuel and Special Liquids in Spacecraft
Abstract: The degassing of liquid fuel and special liquids in spacecraft plays an important and sometimes critical role in the workability of a spacecraft and in the life of astronauts in the space flight conditions. The paper presents the developed methods of degassing liquid fuel or special liquids, which permit to solve the problem of degassing liquid fuel in the fuel tank of a rocket engine and special liquids in the …
Published in Journal of Aerospace Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 7–18 Read article
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Kinematic Hardening Trend of Flow Formed Seamless Tubes of Aluminium Alloys used for Aerospace
Abstract: The current trend of making seamless tubes of aluminium alloys is flow forming. The strength, ductility and toughness are the properties of interest for proper alloy design of tubes to withstand combustion pressure from propellants, elevated temperature creep and stress corrosion, especially in marine environments. The final strength of the flow formed tubes is known to control these properties. Therefore, an efficient kinematic flow stress simulator has been formulated to …
Published in Journal of Aerospace Engineering & Technology · Vol. 11, Issue 2, 2021 · pp. 38–46 Read article
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Effect of Advanced Processing on the Development of Nano Bainite
Abstract: A comprehensive report has been tried to address associating the advanced processes to develop high performance bainitic steel. The effect of novel processing like iso-thermal processing, thixoforming, quenching-partitioning and ausforming has been justified on the development of carbide free nano bainite. The single-variable stage iso-thermal holding of 0.34C-1.52Mn-1.48Si-0.93Ni-1.15Cr-0.40Mo-0.71Al steel at the temperature range of 668K-563K has revealed that the bainite, which formed at just above martensite start temperature, was associated …
Published in Journal of Aerospace Engineering & Technology · Vol. 12, Issue 2, 2022 · pp. 16–21 Read article
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ZnCdS thin film chalcogenide by chemical bath deposition method
Abstract: Chalcogenide ZnCdS thin films preparation by chemical bath deposition method is currently considerable interest because it is relatively inexpensive, simple and large area deposition technique. Different substrates are used since these are low temperature process which avoids oxidation and corrosion behavior of substrate. Photoelectrochemical solar cells, photoconductors, detectors, sensors, etc. are some of the applications of chalcogenide ZnCdS thin films. The effect of zinc content on structural, morphological and optical …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 22, Issue 1, 2020 · pp. 19–27 Read article