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1227 articles for “Phases”
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Evaluation of Solar Heat Gains and Environmental Influence of the Phase Change Material (PCM) Wall
Abstract: Solar powered warm vitality can be viably put away in dividers of a working by joining stage change materials (PCMs) inside them. Plasterboards containing PCM can be utilized to assimilate and store solar based warmth picked up amid daytime and discharge or put away warmth amid evening time. A divider fitted with plasterboards containing PCM is typically called a PCM divider. In this review, south façade of a test room …
Published in Journal of Thermal Engineering and Applications · Vol. 4, Issue 2, 2017 · pp. 8–17 Read article
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Studies on Waste Water Treatment in Three Phase Semifluidized Bed Bioreactors: Computer Aided Analysis and Software Development
Abstract: Design and performance analysis of three phase semifluidized biofilm reactors for aerobic treatment of industrial effluents have been attempted. Bioconversion processes that follow Monod-type kinetics and those following Haldane-Andrews kinetics (involving substrate inhibition to microbial growth) have been considered as typical cases. The bioreactor has been modelled mathematically by solving performance equations separately for the packed section and for the fluidized section, considering dispersed flow in both of these sections, …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 7, Issue 1, 2016 · pp. 1–21 Read article
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Comparative Performance of Phase Change Materials for Solar Thermal Storage System
Abstract: This paper is aimed at understanding the melting behavior of different Phase Change Materials (PCM) encapsulated in a spherical capsule. The melting process of PCM enclosed in spherical capsule has been investigated computationally and experimentally in the range of parameters useful for solar water heating applications. CFD predictions of the melting of two different PCMs viz. savE® HS-58 and Paraffin wax (PW) inside a spherical capsule have been obtained. Experiments …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 2, Issue 1, 2011 · pp. 1–7 Read article
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Phase Change Material in the Heat Exchanger for Improved Performance of Latent Refrigeration Storage Systems
Abstract: Using phase change materials (PCMs) in conjunction with a latent cool storage system is an efficient method of storing cool energy. It has the advantage of storage process with isothermal nature and storage of high energy density. Within last few years it has been inspected that in cool storage applications, PCM’s have been widely used. PCM’s are melted and solidified at wide ranges and temperatures and hence are attractive in …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 10, Issue 2, 2023 · pp. 19–29 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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Yield Loss Assessment in Common Bean (Phaseolus vulgaris L.) due to Ascochyta Blight (Phoma exigua var. diversispora (Bubak) Boerema) Disease
Abstract: Ascochyta blight (Phoma exigua var. diversispora (Bubak) Boerema) causes a severe, rapidly developing disease on common beans (Phaseolus vulgaris L.) that can bring about complete plant defoliation and extensive yield loss. Studies were conducted in Rwanda to quantify the yield loss attributed to bean ascochyta blight on 64 common bean genotypes including bush and climbing. Using a split plot design, trials were conducted at three locations, where ascochyta disease is …
Published in Research & Reviews : Journal of Agricultural Science and Technology · Vol. 10, Issue 4, 2021 · pp. 36–52 Read article
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Experimental Analysis Of Thermal Behaviour Of Phase Change Materials In Cooling Applications Of Roof Top Building Slabs
Abstract: In this research article, different phase change materials are incorporated inside the slabs to reduce the heat transfer from the roof. Experiments are conducted during summer season March 2021 to the time lag decrement factor and heat flux to that of results are compared with RCC slab to that of Green material I (CaCl26H2O) and Green Roof with Green material II (48%CaCl2+4.3%NaCl+0.4%KCl+47.3%H2O). On comparison Green Slab II is having better …
Published in Journal of Polymer & Composites · Vol. 12, Issue 3, 2024 · pp. 102–114 Read article
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Experimental Investigation on Thermal Conductivity and Viscosity of Phase Change Material (NaNOᴣ and KNOᴣ) with Different Concentrations of ZnO Polymer Nanofluids for Solar Energy Absorption
Abstract: When evaluating the effectiveness of solar heat absorption methods or solar thermal energy storage systems (TESS), heat transfer fluid is a crucial element. Thermal conductivity and usable heat obtained for any industrial or immediate power plant efficiency are improved by the distinctive refining of Heat Transfer Fluid (HFT). The phase change material used in this study, known as solar salt is a blend of 60% NaNO3 and 40% KNO3. It …
Published in Journal of Polymer & Composites · Vol. 12, Issue 5, 2024 · pp. 25–35 Read article
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Phase Transformation of Manganese Steel: A Role of Alloying Elements
Abstract: Low alloyed steels that are both strong and ductile are the primary focus of new material concept work due to economic considerations. One key to making good use of these materials is applying the right heat and thermo mechanical treatments. Phase transitions can be influenced by using different alloying procedures. Microstructural evolution and mechanical characteristics were investigated in relation to varying manganese, silicon, and chromium levels. Developing high-strength flat rolled …
Published in Trends in Mechanical Engineering & Technology · Vol. 14, Issue 2, 2024 · pp. 15–20 Read article
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Single-Phase Electric Vehicle Battery Charger With Bidirectional Capability
Abstract: Electric vehicle (EV) technology has become prominent nowadays in the automotive industry and is playing a key role in decreasing greenhouse gas (GHG) emissions and advancing sustainable transportation. Bidirectional battery chargers are a key part of EV infrastructure. They not only help to exchange power from the grid to your car’s battery, but they also let energy flow from your car to the grid, giving you V2G capabilities. EVs may …
Published in International Journal of Optical Innovations & Research · Vol. 2, Issue 2, 2024 · pp. 1–8 Read article
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Development of a Heat Actuator Using Liquid-Vapor Phase Change of R134a
Abstract: AbstractLarge volume changes can be produced by liquid-vapor phase change of working fluids which can be used in actuators as the driving power source. The temperature range of working of such actuators depends on the characteristics of the phase change working fluid. In this paper we discuss the concept and design of a heat actuator which uses liquid-vapor phase change of its working fluid for actuation of a piston. The …
Published in Journal of Thermal Engineering and Applications · Vol. 6, Issue 1, 2019 · pp. 1–4 Read article
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Control of a Three Phase Grid-Connected Photovoltaic System with Maximum Power Point Tracking
Abstract: The power output of a photovoltaic system is greatly dependent on environmental conditions such as solar irradiation and ambient temperature. Due to the nonlinear nature of these conditions, the power output of the PV system is nonlinear. As a result, interfacing its output to the electrical grid is not possible. In order to achieve a grid connected photovoltaic (PV) system, controlled maximum power point tracking techniques are needed to obtain …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 52–64 Read article
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Characterization of High Speed Phase Frequency Detector Circuit
Abstract: In this paper the performance of high speed phase frequency detector (PFD) is analysed. A high-speed PFD reduces the power consumption of traditional PFD to 0.423 nW at 1 GHz clock frequency and dead zone to 2 ps. It is suitable for low power applications. A PFD uses only 18 transistors. This PFD operates up to 1 GHz at 1.2 V supply voltage. The proposed architecture of the PFD has …
Published in Journal of VLSI Design Tools and Technology · Vol. 5, Issue 1, 2015 · pp. 51–58 Read article
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Phased Array Radar
Abstract: Radar technology, mainly in the field of defense applications, to expand the capacity of its ongoing process. In particular, their unprecedented degree of operational flexibility active electronically scanned array (AESA) radar is currently about revolutionary air, sea and performance radar ground. The current state of development of phased array radar and manufactured and discussed the progress in the development trend of systems and technology.Keywords: AAPAR (Adaptive Active Phased Array Radar), …
Published in Journal of Advances in Shell Programming · Vol. 6, Issue 2, 2019 · pp. 22–27 Read article
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Phytochemical Study of Seed Extract of Phaseolus vulgaris
Abstract: Phaseolus vulgaris L. is usually known as kidney beans. It is a green medicinal plant that has a place with the family Fabaceae. Conventional arrangement of medication utilized this for the cure of few sicknesses such as diabetes, malignant growth, kidney issues, and so forth. For the present research work, the powdered plant seeds were dissolved consecutively in various solvents in increasing polarity order. Different phytoconstituents such as saponins, flavonoids, …
Published in Research & Reviews : Journal of Herbal Science · Vol. 9, Issue 3, 2020 · pp. 11–16 Read article
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Phase Transition and Molecular Orientational Studies on Nematic Dimmer and Cholesteric Materials
Abstract: The binary mixture of nematic dimmer and cholesteric compounds viz., cholesteryl nonanoate (CN) and 1,7-bis-4-(4′-cyanobiphenyl) heptane (CB7CB) exhibits very interesting liquid crystalline phase’s at large range of concentrations and temperature. The concentrations with lower/higher percentage of CB7CB exhibit cholesteric and reentrant smectic-A phases sequentially when the specimen is cooled from its isotropic phase. The molecular tilt and birefringence have been discussed in the region of smetic-A and smectic-C phases, respectively …
Published in Research & Reviews : Journal of Physics · Vol. 7, Issue 1, 2018 · pp. 1–4 Read article
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Variation in Diurnal Phase of Cosmic Ray Intensity during 1986–2017
Abstract: Variations of cosmic ray diurnal phase for Oulu, Apatity, Kiel and Moscow neutron monitoring stations through harmonic analysis by Fourier technique have been investigated in the present study. The period of investigation has been taken to be the period of solar cycle 22, 23 and major portion of solar cycle 24; i.e. 1986 to 2017. Diurnal phase is found have tendency to shift towards later hour direction during 1989, 2000 …
Published in Research & Reviews : Journal of Physics · Vol. 7, Issue 3, 2018 · pp. 20–23 Read article
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Efficient Fault Detection in Power Transmission: A Review of Three-Phase Line Fault Detection with Hybrid Energy using MATLAB
Abstract: In urban regions, the density of power demand has significantly increased recently. Large-scale subterranean power cable installations are beginning to take the place of overhead transmission lines everywhere in the world because of environmental concerns in highly populated areas. The present project's primary objective is to use MATLAB to create a simulation model that includes 3ph symmetrical and unsymmetrical defects. Some have proven to be effective in detecting errors while …
Published in International Journal of Electrical Power and Machine Systems · Vol. 1, Issue 1, 2023 · pp. 42–47 Read article
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Multi-phase Flow Simulation Using Computational Fluid Dynamics
Abstract: Computational fluid dynamics (CFD)-based multi-phase flow simulation is a fast developing topic with broad applications in many scientific fields and industry. An extensive account of current developments, difficulties, and uses in multi-phase flow simulations is given in this review paper. Important modeling strategies, numerical methods, validation procedures, and new developments in CFD-based multi-phase flow analysis are covered. This paper is to contribute to the ongoing development and use of CFD …
Published in International Journal of Machine Systems and Manufacturing Technology · Vol. 1, Issue 2, 2023 · pp. 28–34 Read article
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Evaluation of composite material based on different phases of Face recognition System
Abstract: Composite materials can indeed play a crucial role in various phases of a face recognition system, offering advantages such as lightweight construction, durability, and tailored mechanical properties. Let's explore how composite materials can be utilized in different phases of a face recognition system. A composite material based different phases of Face recognitions System is software that recognizes or verifies a person based on a digital image or a frame from …
Published in Journal of Polymer & Composites · Vol. 12, Issue 2, 2024 · pp. 195–204 Read article