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Performance and exergy analysis of an inclined solar still with baffle arrangements

Heliyon 2023年第4期9卷 e14807页

作者： S Seralathan G Chenna Reddy S Sathish A Muthuram Joshuva Arockia Dhanraj Natrayan Lakshmaiya Karthikeyan Velmurugan Chatchai Sirisamphanwong Rattapon Ngoenmeesri Chattariya Sirisamphanwong School of Aeronautical Sciences Hindustan Institute of Technology and Science Chennai 603103 Tamil Nadu India. Department of Mechanical Engineering Hindustan Institute of Technology and Science Chennai 603103 Tamil Nadu India. Centre for Automation & Robotics (ANRO) Department of Mechatronics Engineering Hindustan Institute of Technology and Science Chennai 603103 Tamil Nadu India. Department of Mechanical Engineering Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Chennai India. Center for Alternative Energy Research and Development Khon Kaen University Thailand. Mechanical Engineering Division Faculty of Engineering Khon Kaen University Khon Kaen Thailand. Smart Energy System Integration Research Unit Department of Physics Faculty of Science Naresuan University Thailand. Research and Academic Service Faculty of Science Naresuan University Thailand. Department of Physics and General Science Faculty of Science Nakhon Sawan Rajabhat University Thailand.

This study presents the details of performance and exergy investigations on an inclined solar still with baffle arrangements. The shortage of consumable water creates the transformation of accessible brackish water into consumable water an unavoidable one and this can be accomplished utilizing sun-oriented refining. To remove drinkable water from pungent water, sun-oriented still is broadly utilized. To build the contact season of the pungent water with sunlight-based brilliance, perplex course of action is set to expand the opposition in the stream. This prompts more vanishing of brackish water. Therefore, the objective of this study is to improve freshwater yield. The experimental study is performed for two different mass flow rates (m = 0.0833 kg/min and m = 0.166 kg/min). An increase in the mass flow of water directly deteriorates the yield of fresh water. Highest accumulated freshwater yield is achieved as 2.908 kg/m day during the month of May for m = 0.0833 kg/min. The accumulated freshwater yield improved by 4.23% in comparison with inclined solar still designs. Moreover, the yield is better by 3.49%-61.56% in comparison with various solar still designs. Using RSM, a polynomial statistical model is specified to estimate as well as maximize the freshwater yield of ISSB. The exergy analysis for m = 0.0833 kg/min shows a maximum hourly exergy efficiency of 6.82%.

关键词： Baffle arrangements Exergy efficiency Inclined solar still Performance yield

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A hybrid integrator-gain based low-pass filter for nonlinear motion control

A hybrid integrator-gain based low-pass filter for nonlinear...

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IEEE Conference on Control technology and Applications

作者： S.J.A.M. van den Eijnden Y. Knops M.F. Heertjes Department of Mechanical Engineering Eindhoven University of Technology MB Eindhoven The Netherlands ASML Mechatronics System Development DR Veldhoven The Netherlands

In this paper a hybrid low-pass filter is developed and subsequently embedded in a PID-based control design. The hybrid element switches between gain and integrator mode, depending on the evaluation of specifically designed switching conditions. Given the properties of the hybrid low-pass filter, which are mainly expressed by reduced phase lag as compared to a linear-equivalent low-pass filter, the bandwidth of the PID-based control design can potentially be increased. Based on describing function analysis, this bandwidth increase is obtained while identical robustness properties of the closed-loop system in terms of bounds imposed on the closed-loop sensitivity function are guaranteed. In this sense, the hybrid control design provides more design freedom compared to the equivalent linear control design, which leads to a factor two improvement in low-frequency disturbance suppression of a state-of-the-art scanning stage of an industrial wafer scanner.

关键词： closed-loop system terms bounds imposed

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Evaluating the linearized feedback controller for regulation of aided sit-to-stand in subjects with spinal cord injuries 7

Evaluating the linearized feedback controller for regulation...

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7th IEEE Conference on Systems, Process and Control, ICSPC 2019

作者： Ahmed, Mohammed Huq, M.S. Ibrahim, B.S.K.K. Jalo, Salihu Abdulmumini Elhassan, Garba Department of Electrical and Electronics Engineering Abubakar Tafawa Balewa University Bauchi Nigeria Advanced Mechatronics Research Group Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia Parit Raja Malaysia Institute of Technology Department of Mechatronic Engineering Sligo Ireland School of Mechanical Aerospace and Automotive Engineering Coventry University Coventry United Kingdom Adamawa State Polytechnic Yola Department of Electrical and Electronics Engineering Adamawa State Nigeria Universiti Tun Hussein Onn Malaysia Parit Raja Malaysia National Space Research and Development Agency Abuja Nigeria

ISBN: (纸本)9781728118260

Presented was an investigation on the performance of the feedback linearization control (FLC) method for the FES induced STS movement application in paraplegia. Improving the operation condition of the FES induced movement is one of the challenges currently receiving attention by so many scholars in the field. The Newton-Euler and Euler-Lagrange methods are utilised to check its correctness together with the muscle model proposed by Ferrarin and Pedotti. The FLC was evaluated for the system with and without fatigue disturbance. Although the fatigue disturbance was introduced in the system, results revealed that the cumulative current, cumulative rate of change in current the cumulative rate of change in current, RMSE, tracking error, cumulative tracking error and the level of the control signal, were by far better for the FL than that of the PID control technique with wide margins. Therefore, results portrayed that the FL control system the tendency to annul the effects of the effect of fatigue with higher capability over the gain scheduling based PID control method. It also indicates superiority in terms of system stability. © 2019 IEEE.

关键词： Three term control systems

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Corrigendum to “Excitation-dependent emissive FeSe nanoparticles induced by chiral interlayer expansion and their multi-color bio-imaging” [Nano Today 43 (2022) 101424]

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Nano Today 2022年 45卷

作者： Junyoung Kwon Seung Won Jun Jeonghyo Kim Mirae Lee Youngeun Choi Doukyun Kim Minwoo Kim Sang Gil Lee Seungah Lee Seong Ho Kang Kwangseuk Kyhm Chang-Seok Kim Jeong Yoon Park Nicholas A. Kotov Chul-Hong Park Jaebeom Lee Department of Cogno-Mechatronics Engineering Pusan National University Busan 46240 Republic of Korea Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea Ground Technology Research Institute Agency for Defense Development Daejeon 34186 Republic of Korea Department of Chemistry Chemical Engineering and Applied Chemistry Chungnam National University Daejeon 34134 Republic of Korea Department of Neurosurgery Spine and Spinal Cord Institute Gangnam Severance Spine Hospital Yonsei University College of Medicine Seoul Republic of Korea Quantum Matter Core-Facility and Research Center of Dielectric and Advanced Matter Physics Pusan National University Busan 46240 Republic of Korea Nano-Bio Electron Microscopy Research Group Korea Basic Science Institute Daejeon 34133 Republic of Korea Department of Applied Chemistry and Institute of Natural Sciences Kyung Hee University Yong-In 17104 Republic of Korea Department of Opto-mechatronics Engineering Pusan National University Busan 46240 Republic of Korea Department of Chemical Engineering and Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109 USA

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Effect of graphene coating thickness on thermal performance of microwave assisted solar thermal hybrid system

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Applied Thermal Engineering 2025年 277卷

作者： Soudagar, Manzoore Elahi M. Singh, Pradeep Kumar Mohanavel, Vinayagam Nithya, T.M. Nagarajan, Nagabhooshanam Sathiyamurthy, S. Srinivasan, R. Basavegowda, Nagaraj Munimathan, Arunkumar Seikh, A.H. College of Engineering Lishui University Zhejiang Lishui323000 China Clement Town Dehradun India Chitkara Centre for Research and Development Chitkara University Himachal Pradesh 174103 India Department of Mechanical Engineering GLA University Uttar Pradesh Mathura281406 India Deemed to be University Kanathur Tamil Nadu Chennai603112 India Centre for Research Impact and Outcome Chitkara University Institute of Engineering and Technology Chitkara University Punjab Rajpura140401 India Department of Computer Science and Engineering K.Ramakrishnan College of Engineering Samayapuram Tamil Nadu Trichy621 112 India Department of Mechanical Engineering Aditya University Surampalem - 533437 Andhra Pradesh India Department of Mechanical Engineering Easwari Engineering College Ramapuram Tamilnadu Chennai600089 India Department of Mechanical Engineering Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences SIMATS Tamil Nadu Chennai602105 India Department of Biotechnology Yeungnam University Gyeongsan38541 Korea People's Democratic Rep Department of Mechatronics Engineering Hindusthan College of Engineering and Technology Coimbatore 641032 Tamil Nadu India Mechanical Engineering Department College of Engineering King Saud University Riyadh11421 Saudi Arabia

Flat plate solar thermal collectors (FPCs) are widely used in energy engineering to capture solar energy through flat plates and feature with hybrid nanofluid that improves the heat transfer rate, ensures a uniform temperature distribution, and demonstrates good thermal efficiency. However, several challenges persist, including low absorption, variations in thermal conductivity caused by heat loss/ agglomeration of nanoparticles, and moderate thermal efficiency. This research aims to address these challenges and enhance the thermal performance of FPCs by applying different thicknesses of graphene nano-coatings and utilizing a 2.45 GHz microwave heating process, which has a penetration depth of 1 cm. This process is supported by silver-coated fabric to serve as a microwave shield. A hybrid nanofluid consisting of copper oxide (CuO) and zinc oxide (ZnO) in a 50:50 ratio at a concentration of 3 vol% is employed to improve the heat transfer rate by increasing surface contact with the absorber tube. The study investigates the effects of graphene nano-coating, combined with the microwave heating process, on the functional behaviour and absorptivity properties of the FPCs. The results are compared to those of FPCs operated without the graphene nano-coating and the hybrid nanofluid. The findings reveal that applying a 75 nm graphene nano-coating, along with the 2.45 GHz microwave heating process and a 3 vol% concentration of hybrid nanofluid, resulted in the following maximum values: absorption of 1700.3 nm, thermal conductivity of 0.84 W/mK, fluid temperature of 83.2 °C, energy storage of 742.5 kJ, thermal cyclic resistance of 1.63, and efficiency of 62.5 %. © 2025 The Authors

关键词： Microwave materials processing

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The effects of the electro-mechanical coupling and Halbach magnet pattern on energy harvesting performance of a two degree of freedom electromagnetic vibration energy harvester

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International Journal of Vehicle Noise and Vibration 2018年第2期14卷 124-146页

作者： Zhang, Ran Wang, Xu Shu, Hongli John, Sabu School of Engineering RMIT University Australia Jiangxi Professional Institute of Mechatronics Technology Nanchang North Development District ICP 05001964 Fenglin Road Jiangxi330013 China School of Engineering RMIT University Australia

This paper studies a two degree of freedom electromagnetic vibration energy harvesting system with a magnet arrangement of the Halbach array. A theoretical analysis and computational simulation of the system were established through frequency response analysis and time domain integration of the system motion equations using the Matlab Simulink software. The results of the theoretical analysis and simulation models were compared with the results of a series of experiments, verifying the analysis approach. Copyright © 2018 Inderscience Enterprises Ltd.

关键词： Time domain analysis

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Optimization of interferometric sensing heads for active mode locking laser sensor

Optimization of interferometric sensing heads for active mod...

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OptoElectronics and Communications Conference, OECC

作者： Chang Hyun Park Gyeong Hun Kim Hwi Don Lee Minsik Jo Chang-Seok Kim Department of Cogno-Mechatronics Engineering Pusan National University Busan Korea Advanced Photonics Research Institute Gwangju Institute of Science and Technology Gwangju Korea Agency for Defense Development Daejeon Korea

Partial reflector sensing head is implemented for active mode locking (AML) laser sensor using fiber Fabry-Perot interferometer (FPI). The length change of fiber FPI sensing head segments can be measured by sweeping t... 详细信息

ISBN: (纸本)9781538691465

关键词： Optical fiber sensors Optical fibers Laser mode locking Fiber lasers Measurement by laser beam Reflectivity Cavity resonators

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Evaluating the Linearized Feedback Controller for Regulation of Aided Sit-to-Stand in Subjects with Spinal Cord Injuries

Evaluating the Linearized Feedback Controller for Regulation...

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IEEE Conference on Systems, Process & Control (ICSPC)

作者： Mohammed Ahmed M. S. Huq B. S. K. K. Ibrahim Salihu Abdulmumini Jalo Garba Elhassan Advanced Mechatronics Research Group Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia Parit Raja Malaysia Institute of Technology Sligo Ireland School of Mechanical Aerospace and Automotive Engineering Coventry University Coventry United Kingdom Adamawa State Polytechnic Yola Adamawa State Nigeria Universiti Tun Hussein Onn Malaysia Parit Raja Malaysia National Space Research and Development Agency Abuja Nigeria

ISBN: (数字)9781728118260

ISBN: (纸本)9781728118277

关键词： Fatigue PD control PI control Iron Mathematical model Oscillators

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Modified SEPIC DC-to-DC Converter 2/(1-k) Output Gain Configuration for Renewable Power Energy and High Voltage Applications 18

Modified SEPIC DC-to-DC Converter 2/(1-k) Output Gain Config...

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18th IEEE International Conference on Power Electronics and Motion Control, PEMC 2018

作者： Ozsoy, Emre Padmanaban, Sanjeevikumar Fedak, Viliam Muranda, Charles Cernet, Mihet Research Development Design Center Danfoss Drives A/S Denmark Dept. of Energy Technology Aalborg University Esbjerg Denmark Dept. of Electrical Engg. Mechatronics Technical University of Kosice Slovakia Dept. of Electrical and Electronics Engg. University of Johannesburg Auckland Park South Africa Dept. of Electrical Engg. Transilvania University of Brasov Brasov Romania

ISBN: (纸本)9781538641989

This paper investigates the analysis of a converter which has higher voltage gain as compared to the conventional and modified single ended primary inductor converter (SEPIC) topologies. Proposed high gain SEPIC converter has a combination of two voltage lifting topologies;the switched inductor-capacitor type and the switched capacitor modification. A combination of these two modifications achieves a voltage gain of twenty times at a duty ratio of 90% by using 3 inductors, 5 capacitors and 4 diodes. Simulations conducted in Matlab/Simulink validate the analytical analysis along with the derivations of the theoretical analysis of the converter. © 2018 IEEE.

关键词： DC-DC converters

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Integral Sliding Mode Control and Gain-Scheduled Modified Utkin Observer for an Underground Coal Gasification Energy Conversion Process

Integral Sliding Mode Control and Gain-Scheduled Modified Ut...

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International Conference on Methods and Models in Automation and Robotics (MMAR)

作者： Ali Arshad Uppal Saif Siddique Butt Aamer Iqbal Bhatti Harald Aschemann Department of Electrical Engineering COMSATS University Islamabad Pakistan IAV Development GmbH Gifhorn Germany Department of Electrical Engineering Capital University of Science and Technology Islamabad Pakistan Chair of Mechatronics University of Rostock Rostock Germany

One of the challenging control problems of an underground coal gasification (UCG) process involves maintaining a desired heating value from the extracted product gases. In this paper, a model-based control and state estimation of UCG process is described. For the purpose of control and state estimation, a sophisticated model of the UCG process using partial differential equations is approximated by a gain-scheduled nonlinear control-oriented model. Based on this approximated plant model, a robust integral sliding mode control is designed to track a desired trajectory of the heating value. Furthermore, for the estimation of unknown states of the system, a gain-scheduled modified Utkin observer is designed as well. The robustness of the nonlinear control and estimation techniques is assessed by introducing parametric uncertainties in the UCG plant. The simulation results highlight the effectiveness of the proposed nonlinear control and estimation techniques in comparison to a conventional PI controller.

关键词： Coal Water Observers Process control Heating systems Mathematical model Gases

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