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278 articles for “Working Fluids”
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Energy and Exergy Analysis of Ammonia Water Operated Vapour Absorption Refrigeration System Using Artificial Neural Network Approach
Abstract: In this study, energy and exergy analysis have been performed of the ammonia-water operated vapour absorption refrigeration (VAR) system. Authors have trained artificial neural network (ANN) for predicting thermodynamic properties (specific enthalpy and specific entropy) of working fluid (ammonia-water). Authors have achieved coefficient of multiple determination (R2) value 0.9999 and the root mean square error (RMSE) value 0.00211 for input data set of saturated liquid and R2 value 0.999999 and …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 2, Issue 1, 2015 · pp. 7–20 Read article
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Performance Analysis of Double Coil Wire Inserts for Heat Transfer in a Circular Tube
Abstract: Abstract This work represents the experimental investigation results for turbulent flow heat transfer in a horizontal pipe by using double coil wire inserts and air as working fluid, experiments were carried out for a tube with and without double coil wire inserts at constant heat supply and different mass flow. The double coil wire insert are four different pitch of 12, 14, 16 and 18 mm and three different wire …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 2, Issue 3, 2015 · pp. 25–33 Read article
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A Review on Ejector Based Refrigeration System
Abstract: Abstract Development of industry and increasing living quality, there is a continuous increase in demand of energy which has led to serious environmental issues like global warming, air pollution, production of toxic gases, ozone layer depletion, etc. High oil prize is motivating the researchers to search into renewable energy alternatives. Energy supply to the refrigeration and air conditioning system constitutes a significant role in the world. So, it is very …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 3, Issue 2, 2016 · pp. 8–36 Read article
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Theoretical Analysis of Parabolic Trough Solar Water Heater: A Review
Abstract: Abstract Solar radiation is source for all energies on earth. Energy from sun in the form of radiation is primary source for our planet. The average solar energy received at the earth surface in tropical region is nearly 1 kw/m2. It is renewable source of energy and has no effect as pollutant unlike oils, coal, gases etc. on the environment. It is not depleting with respect to time so will …
Published in Journal of Water Pollution & Purification Research · Vol. 4, Issue 2, 2017 · pp. 8–12 Read article
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The Effect of CNT Coating on Convective Heat Transfer Coefficient, Heat Flux, Roughness, Pressure Drop of Porous Material with 3-Omega Technique: A Review
Abstract: The paper deals with the tentative survey on the heat transfer and pressure drop characteristics of CNT glaze on a stainless steel substrate in a rectangular comprehensive channel with water as the working fluid. The extremely high thermal conductivity of individual carbon nanotubes was predicted hypothetically and pragmatic experimentally. Under both, laminar and turbulent flow conditions, the experiments were conducted with Reynolds number unpredictable from 500–2600. A nanofluid, which depends …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 18, Issue 3, 2016 · pp. 5–8 Read article
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Commercial refrigeration using CO2 as refrigerant- A Study
Abstract: AbstractToday, CO2 refrigeration and heat pumping technologies are recognized as workable and sustainable alternatives for a number of applications like commercial refrigeration, transport refrigeration, vehicle air conditioning, domestic hot water heat pumps and few industrial applications. This study gives an overview for the development possibilities for several applications during the next years. In next coming few years, an increase of market share for CO2 refrigeration and heat pump systems can …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 4, Issue 3, 2017 · pp. 1–6 Read article
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Design Fabrication and Testing of Hydraulic Oil Cooler by Using Heat Pipe
Abstract: Heat pipe is an essentially passive heat transfer device having high thermal conductivity. In hydraulic power pack use of traditional shell and tube heat exchanger would require lot of space, more power and maintenance cost. So heat pipe device is easily implemented for cooling of hydraulic oil. The heat pipe equipped hydraulic oil cooler uses a heat pipe module comprises of aluminum base block with oil channels machined on it. …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 5, Issue 1, 2018 · pp. 10–19 Read article
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CO2 SAFETY ISSUES AND ITS USE AS A NATURAL REFRIGERANT IN REFRIGERATION
Abstract: The atmosphere contains about 0.04% carbon dioxide, which is a naturally occurring chemical (400 ppm). The majority of living things make it while breathing, and plants absorb it. It is also created through a variety of industrial operations, most notably the burning of fossil fuels like coal, gas, or oil to produce electricity or power vehicles. In the modern era, CO2 refrigeration and heat pumping technologies are acknowledged as practical …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 9, Issue 2, 2022 · pp. 1–5 Read article
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Electrical Discharge Machining for Precision Metal Working Industries
Abstract: EDM is called as Electrical Discharge Machining. Otherwise called as Spark Erosion Machining, Electro-Erosion Machining, Spark Machining, and Electro Discharge Machining. It is an unconventional machining process to machine hard metals and alloys. EDM has been a significant machining technique. The electrode, work piece materials, dielectric, and the range of pulse rate, current, and voltage make up the basic EDM process. The dielectric serves the following purposes: it transports removal …
Published in International Journal of Electro-Mechanics and Material Behaviour · Vol. 1, Issue 2, 2023 · pp. 7–11 Read article
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Effect of Various Dielectric Fluids on Performance of EDM: A Review
Abstract: In electrical discharge machining (EDM), material removal takes place by means of successive electrical discharges occurring between an electrode and a work piece in the presence of dielectric liquid or gas. As dielectric fluid plays very significant role in any electrical discharge machining operation, selection of dielectric medium is an important consideration for EDM performance. It does not only serve to carry away the condensed metal particles from the spark …
Published in Trends in Mechanical Engineering & Technology · Vol. 6, Issue 1, 2016 · pp. 55–71 Read article
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Nucleonic Level Measurement in Fluid Catalytic Cracking Unit, Oil & Gas Refinery
Abstract: The measurement of ‘Level’ is crucial in an Industrial Process, as low levels can cause problems and damage equipment. In contrast, high levels can cause overflow and potentially create safety and environmental problems. When working with the Fluid Catalytic Cracking System Unit (FCCU) in Refineries, there are requirements for various types of level measurement instruments. One of them is the Nucleonic Level Measurement device used in the process involved in …
Published in Emerging Trends in Chemical Engineering · Vol. 11, Issue 3, 2024 · pp. 41–49 Read article
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Thermo-Fluid Characterization of Corrugated U-Tube Shell-and-Tube Heat Exchanger with Polymer Composite Tube Wall: A Combined CFD and Experimental Investigation
Abstract: Shell-and-tube heat exchangers built with metallic tubes work well thermally, but corrosion problems, extra weight, and the inability to adjust the wall’s thermal properties through material choice remain genuine engineering headaches, particularly for corrosive or weight-critical applications. Over the past few years there has been a fair amount of interest in replacing metal tubes with polymer composite alternatives, since blending thermally conductive fillers — graphite nanoplatelets, boron nitride platelets and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 Read article
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Thermo-Fluid Characterization of Corrugated U-Tube Shell-and-Tube Heat Exchanger with Polymer Composite Tube Wall: A Combined CFD and Experimental Investigation
Abstract: Shell-and-tube heat exchangers built with metallic tubes work well thermally, but corrosion problems, extra weight, and the inability to adjust the wall’s thermal properties through material choice remain genuine engineering headaches, particularly for corrosive or weight-critical applications. Over the past few years there has been a fair amount of interest in replacing metal tubes with polymer composite alternatives, since blending thermally conductive fillers — graphite nanoplatelets, boron nitride platelets and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 859–873 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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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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Determination of Maximum Allowable Pump Speed for Transferring Fluid to a Vertical Height at Constant Power
Abstract: This work determines the maximum possible velocity fluids can be transported through a vertical height at constant pump power. The analysis involves simulation of theoretical piping equations and analysis of the pump pressure, frictional pressure drop and static (atmospheric) pressure with respect to flow velocity using MS excel and Matlab. Computational results obtained from MS excel and represented graphically in Matlab establish the maximum allowable velocity – below which the …
Published in Recent Trends in Fluid Mechanics · Vol. 1, Issue 1, 2014 · pp. 31–40 Read article
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Cylindrical Magnetorheological Brake Design
Abstract: This paper studies the cylindrical magnetorheological brake design for two wheelers. Braking torque is needed to be maximized by reducing the weight of magnetorheological brake. The effect of structural properties of brake material, magnetorheological fluid properties, different types of magnetorheological fluid, effect of particle size, effective working surface, composition of magnetorheological fluid, temperature, magnetic properties of brake material, magnetic field strength on braking torque, etc. are investigated and braking performance …
Published in Journal of Automobile Engineering and Applications · Vol. 2, Issue 1, 2015 · pp. 26–28 Read article
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Integration of Taguchi and MCDM Techniques for the Optimization of Experimental Parameters in Electrical Discharge Machining: A Research
Abstract: Electric discharge machining (EDM) represents a non-conventional approach to machining, particularly beneficial for processing hard-to-machine materials or components with high length-to-diameter ratios or intricate shapes. Widely employed across various industries such as automotive, chemical, aerospace, biomedical, and tool and die, EDM offers a unique method for achieving precise shapes and dimensions. Unlike traditional machining methods where form is attained through the interaction of the tool and workpiece, EDM operates without …
Published in Trends in Mechanical Engineering & Technology · Vol. 14, Issue 1, 2024 · pp. 6–14 Read article
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Integration of Taguchi and MCDM Techniques for the Optimization of Experimental Parameters in Electrical Discharge Machining: A Research
Abstract: Electric discharge machining (EDM) represents a non-conventional approach to machining, particularly beneficial for processing hard-to-machine materials or components with high length-to-diameter ratios or intricate shapes. Widely employed across various industries such as automotive, chemical, aerospace, biomedical, and tool and die, EDM offers a unique method for achieving precise shapes and dimensions. Unlike traditional machining methods where form is attained through the interaction of the tool and workpiece, EDM operates without …
Published in Trends in Mechanical Engineering & Technology · Vol. 14, Issue 1, 2024 · pp. 6–14 Read article
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CFD Analysis and Optimization of Fin-Enhanced Cooling Systems for Enhanced PV Performance
Abstract: This study examines how the performance of photovoltaic (PV) panels can be improved by means of passive cooling techniques through fin configurations. Computational Fluid Dynamics (CFD) simulation, validated with experimental data, was used to analyse the thermal behaviour of PV modules integrated with different fin shapes, namely rectangular, trapezoidal, and triangular geometries. It was found that trapezoidal fins yield better thermal performance, lowering the panel temperature by more than that …
Published in Recent Trends in Fluid Mechanics · Vol. 12, Issue 1, 2025 · pp. 1–15 Read article