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1943 articles for “cars” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Enhancement of Heat Transfer Rate in Cooler by using Nanofluid
Abstract: The paper aims at the study of the cooling system in the household cooler by replacing honeycomb meshing into the radiator. Heat transfer from the radiator can be improved by maximizing the heat transfer area and increasing the heat transfer rate. In this paper, it is focused on increasing heat transfer rate by using MgO nanoparticles in suspension. A Thermophysical property has been increased in heat transfer material. Water was …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 6, Issue 3, 2019 · pp. 1–11 Read article
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Indoor Room Air Conditioning Using External Enclosure
Abstract: This paper presents a new air conditioning system using an external air chamber enclosure. The system is based on evaporative refrigeration technique humidifying hot air from the environment by means of a new design humidifier. Temperature at the air chamber is set up according to the required comfort conditions. The air chamber plays the role of a heat collector from indoor room radiative energy. This new system avoids thermal gradient …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 7, Issue 2, 2020 · pp. 7–21 Read article
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VACUUM ASSISTED ABSORPTION CHILLER. PART I: MODELING AND SIMULATION
Abstract: A new absorption chiller assisted by a vacuum device has been simulated and characterized through a simulation process. Simulation has been developed for a range of 0.75-10 bars for the evaporation process with a constant ratio between the condensation and evaporation pressure of 10. Simulation has predicted a great improvement of the COP of the absorption chiller when operating at evaporation pressures under atmospheric level, with values of 6.844 for …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 8, Issue 3, 2021 · pp. 1–11 Read article
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HYBRID TEG SYSTEM FOR INDUSTRIAL AND AIR CONDITIONING APPLICATIONS
Abstract: A new system to generate electric energy using thermoelectric generators (TEG’s) based on Peltier cells has been conceived, designed and built. The system consists of a Peltier cell assembly installed in a replica of an air conditioning circuit to benefit from hot and cold air flow to generate the appropriate temperature gradient. The new system has been characterized using a group of Peltier cells mounted on a dual thermostatic chamber …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 9, Issue 1, 2022 · pp. 1–17 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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Predictive model of wind turbine rotor-blade deflection
Abstract: A simulation process has been developed to predict wind turbine rotor-blade deflection caused by gravity effects. The model is based on the rotor-blade segmentation in finite elements, each one considered as an independent structure. The simulation has been extended to n-elements to make a more precise approach to the real performance. The range of deformation has been determined for a wind turbine rotor-blade analysing the effects of forces that creates …
Published in Journal of Offshore Structure and Technology · Vol. 8, Issue 2, 2021 · pp. 49–63 Read article
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Analysis of Wind-wave Effect on Short-term FOWT Power Loss
Abstract: The paper analyses the effects of wind misalignment, wave oscillatory movement and wind-wave misalignment onto the performance of floating offshore wind turbines (FOWT) and how they affect the power generation. The study focuses on short term prediction to match network requirements for electric energy management avoiding overloads or consumers demand mismatching. The research studies individual as well as combined effects to determine the reduction in power generation due to these …
Published in Journal of Offshore Structure and Technology · Vol. 8, Issue 3, 2021 · pp. 36–54 Read article
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ENERGY LOSSES IN FLOATING OFFSHORE WIND TURBINE WITH VARIABLE WIND DIRECTION
Abstract: The paper analyses the effects of the variation of wind direction onto the performance of a floating offshore wind turbine (FOWT). The evolution of the Cp coefficient is developed as a function of the velocity of the yaw angle correction when realigning the FOWT after a wind direction change. The results are computed for velocities correction of the yaw angle between 1º/min and 5º/min. A maximum drop of the Cp …
Published in Journal of Offshore Structure and Technology · Vol. 9, Issue 1, 2022 · pp. 1–16 Read article
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EFFICIENCY INCREASE IN MARINE WIND TURBINES
Abstract: The paper studies a method to increase the efficiency in floating marine wind turbines by modifying the pitch angle of the wind rotor blades to make the wind turbine operating at optimum conditions. The pitch angle is adjusted to its optimum value as a function of the tilt angle of the wind turbine mast when submitted to the wave movement. The analysis of the situation has led to a theoretical …
Published in Journal of Offshore Structure and Technology · Vol. 9, Issue 1, 2022 · pp. 37–49 Read article
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Wave Effects on the Performance of Giant Floating Offshore Wind Turbines
Abstract: The performance of a giant floating offshore wind turbine under the effects of wave misalignment has been modelled and simulated. Heave and period of the sea waves have been considered as the most relevant parameters to determine their effects on the power generation of the floating offshore wind turbine. The simulation has been run for two different situations, a non-restriction tilt angle case and a limited tilt angle case. The …
Published in Journal of Offshore Structure and Technology · Vol. 9, Issue 2, 2022 · pp. 6–17 Read article
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Simplified Modelling of Wind and Wave Effects on the Performance of Floating Off-shore Wind Turbines (FOWT)
Abstract: This project continues the development of the wind and wave effects onto the performance of Floating Offshore Wind Turbines (FOWT) initiated in past studies. The previous study characterized the influence of wind-wave misalignment onto the power response of a FOWT with special emphasis on the evolution of power generation with variable angle of wind and wave related to the blade-rotor plane. In this work, the variation of the power generation …
Published in Journal of Offshore Structure and Technology · Vol. 9, Issue 2, 2022 · pp. 18–27 Read article
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Performance Optimization of Floating Offshore Wind Turbines with Wave Oscillation
Abstract: In this paper, the influence of wind turbine tilt due to wave effects on the power generation has been studied and analyzed to optimize the performance of floating offshore wind turbines (FOWT). A simulation process has been developed to determine the optimum tilt angle at which the wind turbine delivers the maximum power. The simulation has been applied to a marine wind turbine with articulated hinge, which allows to correct …
Published in Journal of Offshore Structure and Technology · Vol. 9, Issue 3, 2022 · pp. 26–39 Read article
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A MODEL TO PREDICT ANGULAR PHASE SHIFT BETWEEN WIND AND WAVES FOR FLOATING OFFSHORE WIND TURBINE APPLICATIONS
Abstract: This paper develops a model to predict angular phase shift between wind and waves that can be applied to floating offshore wind turbines. A theoretical simulation, developed in MATLAB program, has been run using non-linear effects that have led to specific algorithms based on matrix development of wind and waves direction. The modelling uses a random generator to create the wind and wave direction on the basis that the angular …
Published in Journal of Offshore Structure and Technology · Vol. 10, Issue 1, 2023 · pp. 1–12 Read article
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Bladeless Offshore Wind Turbines
Abstract: The goal of this paper is to define the structural characteristics of a vertical single-blade wind turbine operating under oscillatory movement due to the wave motion and vibrational forces provided by the wind to the assembly. This new type of turbine can change the current landscape of wind energy. They can expand the generated self-consumption produced by wind energy, which is currently low, and take advantage of the free space …
Published in Journal of Offshore Structure and Technology · Vol. 10, Issue 2, 2023 · pp. 44–53 Read article
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Nano-Scale Coating to Demonstrate the Capillary Motion of Dyed Water in a Single PMMA Microfluidic Device towards the Probable Fabrication of nanofluidic Engine-on-a-Chip
Abstract: A single microfluidic device is fabricated by polymethylmethacrylate (PMMA) using the maskless lithography, hot embossing lithography, nano-coating of diamond-like carbon (DLC), and direct bonding technique. A CMOS camera catching 25 frames per second with a corresponding time-scale resolution of 0.04 second is used to record the surface-driven microfluidic flow of dyed water. A comparison is made between the experimental results and analytical solution to determine the diffusion coefficient in this …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 22, Issue 3, 2020 · pp. 12–15 Read article
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A Conceptual Study of Water WSR to Water Pollution and Water Purification
Abstract: Much of ill health effects humanity in the developing countries is because of unwholesome water supply. Water that is easily accessible, adequate in quantity, free from contamination, safe and readily available throughout the year. There can be no positive health without safe water. Assembly in a resolution emphasized that safe drinking water is a basic element of primary health care. Water is also integrated with other PHC components because it …
Published in Journal of Water Pollution & Purification Research · Vol. 8, Issue 2, 2021 · pp. 16–24 Read article
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Assessment of Human Health Risk Factors Associated with Using Portable Water from the River Benue at Makurdi
Abstract: The non-carcinogenic and carcinogenic risk posed to children and adults by Cadmium, Nickel, Zinc and Lead concentration in River Benue water were evaluated in this study. Sampling for the metals was conducted on three locations in transect of north bank, middle stream and south bank making a total of nine stations. These metals were estimated as hazard index (HI) which took into account the combined effects from the heavy metals …
Published in Journal of Water Pollution & Purification Research · Vol. 8, Issue 3, 2021 · pp. 1–10 Read article
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Modelling of PV systems installations using Geographical Information System:The case of Toluca (Mexico)
Abstract: The goal of the paper is determining the available capacity of photovoltaic power generation density of a defined area through a modeling process using GIS. The method identifies the spots, and calculates the available area that receives solar radiation, taking into account geographical characteristics and spatial distribution of spots. Tilt and orientation are also considered to evaluate shading. The program identifies suitable spots valid for PV power generation. Power density …
Published in Journal of Remote Sensing & GIS · Vol. 11, Issue 2, 2020 · pp. 45–61 Read article
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A Review on Drug Delivery Systems Using Microfluidics
Abstract: AbstractMicrofluidics is undoubtedly an influential technology that is currently revolutionizing the chemical and biological studies by replicating laboratory benchtop technology on a miniature chip-scale device. In the area of drug delivery science, microfluidics offers advantages, such as accurate dosage, ideal delivery, target-precise delivery, sustainable and controlled release, several dosing, and slight side effects. These helps bring significant assets to the drug delivery systems. Microfluidic technology has been increasingly used for …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 10, Issue 1, 2020 · pp. 1–10 Read article
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Pattern of Cancer in Punjab (Cancer Capital of India)
Abstract: The problems of the nature and possible treatment of malignant disease are studied in many laboratories and results are published in different journals. It is difficult for any worker to keep in touch with all the published work. Excellent summaries of papers were published for many years in the Cancer Review, the publication of which was unfortunately suspended about ten years ago. Since then abstracts have been available in the …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 11, Issue 2, 2021 · pp. 4–11 Read article