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448 articles for “Operating temperature”
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Study on Influence of Different Forms of Damping and Operating Temperature on Whirling Speeds of Rotors
Abstract: Accurate prediction of rotor whirl speeds is fundamentally important in the design of rotating machinery. There has been an impressive progress in the study of rotor dynamics in the last decade. The use of finite elements for the simulation of rotor system makes it possible to handle complex problems. Rotating shaft tends to bow out at certain speeds and whirl in a complicated manner. This phenomenon results from various causes …
Published in Trends in Machine design · Vol. 4, Issue 2, 2017 · pp. 41–55 Read article
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Production of Pectin from Orange Peels (Citrus sinensis)
Abstract: The study on pectin manufacturing from orange peel raw material indicated the effect of operating temperature on the quality and quantity obtained at a given mass of orange peels loaded in the distillation column, as well as the influence of time. The pectin was measured at various operating temperatures, times, and pH values of acidic media namely 1, 1.5, 2, 3, and 4 with operating temperatures of 60°C, 70°C, and …
Published in Journal of Catalyst & Catalysis · Vol. 10, Issue 3, 2023 · pp. 29–40 Read article
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Cooling Considerations for Photovoltaic Modules: A Comprehensive Review
Abstract: Operating temperature has a major impact on photovoltaic (PV) module longevity and efficiency. High temperatures have the potential to impair PV systems' overall energy yield through performance degradation and decreased power output. Therefore, in order to preserve ideal operating conditions and optimize PV module performance, effective cooling strategies are essential. This paper offers a thorough analysis of emerging technologies and various cooling factors for photovoltaic modules, including both passive and …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 10, Issue 3, 2023 · pp. 36–41 Read article
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A Review on Cascade System Using Different Refrigerant Pair and on Freeze Drying
Abstract: This study is presented a cascade refrigeration system for different refrigerant pair for high temperature cycle(HTC) and low temperature cycle(LTC). Different pairs are R404-R23 , R744-R717 , R404-R22 etc for low and high temperature cycle and also review on freeze drying application that is performed using cascade refrigeration system. Comparing the moisture content , vitamin C content and other properties of different fruits before and after freeze drying. Various condition …
Published in Trends in Mechanical Engineering & Technology · Vol. 7, Issue 2, 2017 · pp. 36–39 Read article
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Design and Control of Acrolein Production Process
Abstract: In this study, the design and control of acrolein production plant has been investigated. The proposed design consists of a reactor and two distillation columns. Propylene reacts with oxygen and produces acrolein, acrylic acid, carbon dioxide and water. Plant wide operability and control of the entire acrolein production plant with decentralized controllers are explained. Tray temperature control loop and composition control loop are designed to infer final product purity. From …
Published in Emerging Trends in Chemical Engineering · Vol. 1, Issue 2, 2014 · pp. 27–34 Read article
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Design and Control of Ethyl Acetate Production Process
Abstract: In this study, the design and control of ethyl acetate production plant has been investigated. The proposed design consists of a continuous-stirred tank reactor and two distillation columns. Ethanol reacts with acetic acid and gives ethyl acetate and water. Plant-wide operability and control of the entire process plant with decentralized controllers is explained by doing both steady state and dynamic simulations. Tray temperature control loop performance is tested for the …
Published in Emerging Trends in Chemical Engineering · Vol. 2, Issue 1, 2015 · pp. 9–20 Read article
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Studies on Effect of Varying Geometric Parameters of Solar Receiver Tube on Thermal Loss Suffered By It
Abstract: AbstractThe radiative and convective heat losses from a solar receiver tube at a given operating temperature are a function of temperature of the outer glass envelope and outer surface area of the glass envelope. But the temperature of the outer glass envelope and its outer surface area are themselves a function of outer diameter of the heat pipe enclosed within the glass envelope and the annular gap between the outer …
Published in Research & Reviews : Journal of Physics · Vol. 4, Issue 1, 2015 · pp. 10–21 Read article
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Performance Evaluation of Tympanostomus Fuscatus (Periwinkle) Shell Powder as Alternative to Silica Flour in High Temperature Well Cementing Operation
Abstract: The effect of high temperature on cement slurry is a problem in the oil and gas drilling industry. Over the years, silica flour was used to prevent the strength of cement that results from high temperature effect. But, the silica flour is imported and not environmentally friendly. Hence, the need for local material that can serve as alternative becomes imperative. periwinkle shell (Tympanostomus fuscatus) was tested in the laboratory to …
Published in Journal of Petroleum Engineering & Technology · Vol. 15, Issue 2, 2025 · pp. 1–11 Read article
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Optimizing Fin Parameters to Enhance Passive Heat Dissipation in Photovoltaic Panels
Abstract: This study explores passive cooling techniques to enhance the thermal management of photovoltaic (PV) modules, which is crucial for maintaining efficiency. A computational fluid dynamics (CFD) model, using ANSYS Fluent, was developed to evaluate three fin shapes: rectangular, trapezoidal, and triangular, attached to the back of PV modules. The study varied parameters such as fin count, thickness, and length to determine optimal configurations for cooling. Among the designs, triangular fins …
Published in International Journal of Radio Frequency Innovations · Vol. 2, Issue 2, 2024 · pp. 25–35 Read article
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Experimental Investigation on Heat Transfer Characteristics of Thermal Barrier Coating on Aero Engine Components
Abstract: The gas turbine blades play a crucial role in harnessing energy from the high-temperature and highpressure gas generated by the combustor. To withstand this challenging environment, turbine blades often employ super-alloys and incorporate new manufacturing technologies such as Direct Solidification (DS) and Single Crystal (SC). Additionally, the development of advanced ceramic Thermal Barrier Coating (TBC) is imperative to achieve higher operating temperatures (>1200°C). Therefore, the primary focus of this study …
Published in Journal of Polymer & Composites · Vol. 11, Issue 13, 2023 · pp. 50–58 Read article
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Exergetic Analysis of Single Effect LiBr-Water Absorption Cooling System
Abstract: Abstract This paper presents the exergy analysis of single effect LiBr-Water absorption cooling system. The work is committed to the study, the evaluation and distribution of the destroyed exergy for each component constituting this kind of system. The thermodynamic models, derived using the first and second laws of thermodynamics, are employed in a computer program using the engineering equation solver (EES) software to perform the calculations. Influence of various operating …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 3, Issue 2, 2016 · pp. 41–48 Read article
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Characteristics of Sulphate, Nitrate and Total Dissolved Solid on Packed Bed Treatment of Petroleum Hydrocarbon Contaminated Water Using Adsorbent
Abstract: The characteristics of sulphate, nitrate and total dissolved solid was monitored in treatment of water medium contaminated with petroleum hydrocarbon. Agro-based adsorbent was used at different operating temperature in a packed bed unit connected in series of 1, 2 and 3. The initial concentration of sulphate, nitrate and total dissolved solid was measured and after the contaminates had passed through each packed bed unit. The result shows that the adsorbent …
Published in Journal of Materials & Metallurgical Engineering · Vol. 13, Issue 3, 2023 · pp. 38–44 Read article
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Hybrid PV-PCM System to Increase Efficiency
Abstract: AbstractThis paper studies a hybrid design for the photovoltaic industry made up of a conventional photovoltaic panel and a Phase Change Material (PCM) to increase the efficiency of the panel as well as to generate thermal energy. The system has been based on thermal transfer from the PV panel to the PCM through direct contact, thus reducing the operating temperature of the panel and improving its efficiency. The system operates …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 11, Issue 2, 2020 · pp. 15–26 Read article
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Control System for Heat Generation in a Hybrid PV/T System
Abstract: The study analyzes the performance of a PV/T unit with a PCM attached to the rear side of the PV panel in direct contact. The unit works removing heat from the panel and using this heat for external applications. The PCM has a heat exchanger inserted to transfer heat removed from the PV panel and stored in the PCM to a water flow that circulates through the heat exchanger. The …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 13, Issue 1, 2023 · pp. 1–16 Read article
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Performance Comparison of Plantain Stem Fibre, Palm Fruit Fibre and Banana Stem Fibre for Remediation
Abstract: This thesis goes on to show how each bioadsorbent works in a packed bed unit connected in series to remediate or treat contaminated fresh water medium using petroleum hydrocarbons, or crude oil. The purpose of this study was to determine the efficacy of plantain, banana, and palm bunch fibers with diameters of 50 µm, 150 µm, and 200 µm in treating contaminated water media. In each packed bed unit, the …
Published in Emerging Trends in Chemical Engineering · Vol. 10, Issue 3, 2023 · pp. 27–36 Read article
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Smart Fan Speed Regulator using ESP32 With Temperature-Based Automatic Control and IoT Monitoring
Abstract: The increasing demand for energy-efficient and intelligent electrical appliances has created a need for automated systems that can regulate their operation according to changing environmental conditions. Conventional ceiling fans generally require manual speed adjustment, which may result in unnecessary energy consumption when the fan continues to operate at a higher speed than required. To overcome this limitation, this project proposes a Smart Fan Speed Regulator using an ESP32 microcontroller with …
Published in Journal of Microelectronics and Solid State Devices · Vol. 13, Issue 2, 2026 Read article
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Conceptual Investigation of Temperature Effect on Total Dissolved Solid and Electrical Conductivity on Treatment of Polluted Water Using Adsorbent
Abstract: The conceptual investigation of temperature effect on total dissolved solid and electrical conductivity of petroleum hydrocarbon contaminated water medium was monitored using adsorbent packed in packed bed column. The experiment was set up for treatment of the contaminated water medium with crude oil and the initial concentration of the total dissolved solid and electrical conductivity was determined as well as after treatment. The result obtained showcases high mitigation in the …
Published in Journal of Materials & Metallurgical Engineering · Vol. 13, Issue 3, 2023 · pp. 45–50 Read article
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Analytical Design of 1 kW Capacity Lithium Bromide/Water Absorption Refrigeration System
Abstract: AbstractIn current era, the energy scarcity is the key concern. In this context, new alternative environment-friendly energy resources have to be explored. The researchers are focusing more on effective and efficient use of energy. The difference in demand and production of energy opens a new arena of heat recovery systems. Vapour absorption refrigeration systems (VARS) are one of the prominent heat recovery systems powered by heat, and can be powered …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 8, Issue 3, 2017 · pp. 36–49 Read article
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Detailed review on adsorption refrigeration system for different adsorbent/adsorbate working pair green composite materials – An environmental aspect
Abstract: Adsorption refrigeration is one of the greatest encouraging system for the refrigeration applications due to use of low grade energy. Present study deals with detailed review of adsorption refrigeration system. This article mainly concern with adsorption refrigeration arrangement by the utilization of most appropriate operational pairs namely activated carbon/methanol, silica gel/water and zeolite/water. Detail review carried out to predict thermal analysis and performance of the system. Mechanical properties of the …
Published in Journal of Polymer & Composites · Vol. 12, Issue 4, 2024 · pp. 1–9 Read article
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Development and Performance Evaluation of GO–ZnO/PU Hybrid Nanocomposite Coatings for Improved Optical Transmission, Cooling, and Self-Cleaning in PV Systems
Abstract: The performance of solar photovoltaic (PV) modules with time is affected by thermal heating, dust buildup, and exposure to ultraviolet (UV) light; as a result, the power loss increases rapidly during the use condition. In this study, a polyurethane (PU) nanocomposite, fabricated with graphene oxide and zinc oxide (GO–ZnO), is invented and examined. Improvements in heat management, light transmission, and dirt resistance are planned for PV glass surfaces. The nanocomposite …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 243–249 Read article