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83 articles for “cascade system”
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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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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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Cascade Refrigeration System with Internal Heat Exchanger: Suitable Natural Refrigerant Pair Selection
Abstract: In this study, thermodynamic analyses and optimization of various natural fluids as refrigerants in cascade system with internal heat exchanger have been done to get the suitable pair in a wide range of temperatures based on best system performance (maximum COP) as well as on operating characteristics. Out of the 56 possible combinations of high and low temperature fluids with 8 natural refrigerants (ammonia, carbon dioxide, propane, propylene, n-butane, isobutane, …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 1, Issue 1, 2014 · pp. 1–8 Read article
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Performance Evaluation of Single Phase Cascaded Nine Level Inverter using Photovoltaic (PV) SystemPerformance Evaluation of Single Phase Cascaded Nine Level Inverter using Photovoltaic (PV) System
Abstract: Multilevel inverters are considered at present as the state of the art power conversion systems for high power and power quality demanding applications. This paper’s objective is to propose a modified cascaded nine-level inverter topology for a virtually sinusoidal output voltage, less number of power switches, results in decreased complexity and reduced total harmonic distortion (THD). The structure is simple and easy to be extended to higher level but also …
Published in Trends in Electrical Engineering · Vol. 8, Issue 1, 2018 · pp. 30–47 Read article
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Vapor Compression Refrigeration System
Abstract: Refrigeration has been achieved in a variety of methods throughout history, but due to their efficiency anddurability, vapor-compression refrigeration systems (VCRS) have become the favored option. A vapor-compression refrigeration system, in essence, is a system that uses liquid refrigerant in a closed systemthat circulates it through four stages of compression and expansion, transforming it from liquid to vapor.As a result of this change, heat is either absorbed or ejected by …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 8, Issue 3, 2021 · pp. 30–33 Read article
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Design and Implementation of Carry Select Adder based On Wallace tree Multiplier using Adiabatic Logic
Abstract: The Wallace tree multiplier construction using a carry select adder (CSA) and this paper discusses adiabaticlogic. The proposed design aims to reduce power consumption while maintaining high performance.Adiabatic logic is employed to reduce power dissipation by recycling energy during the logic transitions. TheWallace tree multiplier is used to perform fast multiplication of two large numbers by breaking down themultiplication process into smaller sub-tasks. The CSA is used as the adder …
Published in Journal of VLSI Design Tools and Technology · Vol. 13, Issue 2, 2023 · pp. 21–31 Read article
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Novelty of Cascaded Inverter Based Two Stage Power Conditioning Systems for Constant Wind Power Applications
Abstract: Wind energy has proved to be the most promising renewable energy source because of its environmental friendly nature. Wind energy can be generated by harnessing the kinetic energy of atmospheric air. The present concern towards wind turbines is to increase the size of turbine in order to harvest more energy and also to reduce cost of per megawatt capacity. This paper proposes a 2-stage power conversion technique. The first stage …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 1, 2016 · pp. 1–11 Read article
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Cascade of Gait Recognition with Surveillance System in a Client-Server Environment
Abstract: ABSTRACTThis paper presents a system consisting of the application of gait recognition, a physiological biometric applied in a client-server environment. Now-a-days security plays a very important role in almost all fields and most of the public places like banks, airports, railway stations, etc., which require more security as the thieves and criminals are very intelligent whose objective is to create problems for human life and many untoward incidents. The gait …
Published in Journal of Computer Technology & Applications · Vol. 3, Issue 1, 2012 · pp. 26–36 Read article
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Face Recognition Attendance System Using Local Binary Pattern Histogram Algorithm
Abstract: Maintaining accurate and tamper-proof attendance records in educational and corporate environments has long been a challenge due to the limitations of manual and biometric systems. This study introduces the development and deployment of a contactless, automated attendance system that utilizes facial recognition through the local binary pattern histogram (LBPH) algorithm. The primary goal is to offer a secure and efficient substitute for conventional attendance methods by harnessing the power of …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 13, Issue 1, 2026 · pp. 29–34 Read article
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Spectrum Sensing over Rayleigh Fading in Mutihop Cooperative Networks
Abstract: This paper presents a novel cooperative spectrum sensing for the performance analysis of the multihop system model. In this paper, the performance of cooperative spectrum sensing is investigated through intensive simulation analysis by means of energy detection over Rayleigh fading distribution in multihop scenario. The closed form expressions for end-to-end SNR PDF of multihop networks over Rayleigh fading channels with different hard fusion methods are analyzed. Based on the framework …
Published in Journal of Multimedia Technology & Recent Advancements · Vol. 3, Issue 1, 2016 · pp. 1–8 Read article
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An Automated Facial Mask Detection System for Minimizing COVID-19 using Multi-Task Cascaded CNN Model
Abstract: An outbreak triggered by a new coronavirus has continued to spread over the globe till today. Nearly every area of development has felt the effects of COVID-19. The state of healthcare is now quite problematic. One of the many preventative steps adopted to limit the spread of this illness is the use of a mask. To limit the spread of COVID-19, we propose a system that identifies persons who are …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 9, Issue 2, 2022 · pp. 1–13 Read article
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Comparison of Flow Process Values for Different PID Controller Techniques
Abstract: The main objective of this paper is to find the best and suitable controller that can be applied for a flow process in a real system. The flow process is done in a cylindrical tank of cascade system. The search of PID controller is done by the steps of acquiring transfer function from the real time open loop response and invoking it to the various tuning techniques of PID controller …
Published in Journal of Control & Instrumentation · Vol. 6, Issue 1, 2015 · pp. 9–13 Read article
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Recent Innovations in Power Converter Technologies for Grid Integration of Solar Photovoltaic System: An Overview
Abstract: Increasing penetration of renewable energy power system has introduced new kind of issues in power system which can cause various power supply issues like increased harmonics, ineffectiveness of protective devices, reliability problems as well as stability issues. Thus, there is required of new innovation in power converter control strategies which can provide better supply. Reliable synchronization, cost effectiveness and well suited for Solar PV system. New development in Fuzzy logic, …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 6, Issue 1, 2019 · pp. 5–8 Read article
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Import Substitute for Production of Ultrapure Water by Membrane Integrated Process for Medical and Biotechnological Applications
Abstract: The present invention discloses an inexpensive import substitute compact design of low-cost membrane process for the production of ultrapure water for dialysis and medical applications in different fields like pathological laboratories, biochemical analysis, sterilization and sanitation, dental and optical lens cleansers. The ultrapure water of demineralization (DM) process is related to the cascaded high- flux and high-selective membrane system for hyper permeation which is operated under the pressure of 3-7 …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 11, Issue 3, 2021 · pp. 23–31 Read article
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Application of Accelerated PSO and ANN for Optimal Scheduling of Hydrothermal System
Abstract: A short range problem of hydrothermal scheduling of hydrothermal system with cascaded is analyzed in this paper. The net head, water discharge rate and water transport delay between connected reservoirs is considered in the problem. The developed algorithm is demonstrated on a test system consisting one thermal plant and four cascaded hydro plants. The results obtained by the APSO technique are compared to PSO and conventional technique. It is found …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 3, 2016 · pp. 42–52 Read article
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Observer-based Control Design and Stability Analysis of Networked Hammerstein Systems
Abstract: In this paper, an attempt has been made to design observer for Networked Control System (NCS) with random delays. The NCS has been modeled as a Hammerstein system, a cascade combination of static non-linearity and LTI system. Luenberger Observer and Kalman Filter have been used to estimate the system states. Simulation results have been presented which result in stable overall Hammerstein systems, with improvements over existing control procedures.Keywords: Networked Control …
Published in Journal Of Network security · Vol. 2, Issue 3, 2014 · pp. 1–6 Read article
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Automatic Image Description Generation Using Deep Learning Techniques
Abstract: Automatic Image Description Generation methods are extremely useful for image retrieval, search and organization. Previous approaches either use the existing labelled dataset to compose sentences or compose a new description for the test image by exploiting available descriptions of the training images. In practice these methods have limited accuracy, hence if the most important objects in an image cannot be identified, then they cannot generate valid description. Another difficulty lies …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 6, Issue 1, 2019 · pp. 28–37 Read article
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The Frequency and Transient Analyses of a High Voltage Bushing/Transformer Cascade
Abstract: This paper investigates the frequency characteristics and electromagnetic transients of a typical system composed of a high voltage bushing and a power transformer connected in cascade. Detailed distributed-parameter Laplace-domain models are adopted for the digital simulations. These parameters include, among others, the transformer winding’s series inductance, its capacitance to ground and the inter-turn capacitances. Moreover, the number, the geometrical data of the capacitively-graded bushing’s conducting foils and the dielectric insulating …
Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 1, 2019 · pp. 42–53 Read article
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AI Enhanced E-Voting System Securing Elections with Face Recognition and OTP Authentication in India
Abstract: The E-Voting domain seeks to leverage technology to address these issues, enabling citizens to vote securely and conveniently while maintaining the transparency of the electoral process. Machine learning algorithms like Haar cascade and CNN will enhance the system's security, accuracy, and efficiency by leveraging data- driven approaches. Conventional voting techniques frequently encounter obstacles including identity theft, convoluted processes, and hold-ups in the processing of results. This article suggests a complex …
Published in Current Trends in Signal Processing · Vol. 14, Issue 3, 2024 · pp. 21–30 Read article
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A Review on Cascade Tripping and Islanding Scheme
Abstract: Large black outs typically involve sophisticated and cascading chains of events. Giant blackout though sporadic, is expensive to society with estimates of direct prices up to billions of bucks. There also are indirect prices like attainable social disruptions and also the propagation of failures into different infrastructures like communications, water system, fossil fuel and transportation. The very important importance of electrical power to our society motivates continuing attention to maintaining …
Published in Journal of Power Electronics and Power Systems · Vol. 7, Issue 2, 2017 · pp. 24–27 Read article