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Journal articles on the topic 'Thermo-electrical system'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Plevachuk, Yu O., V. M. Sklyarchuk, I. I. Shtablavyi, N. V. Faidyuk, and R. N. Savchuk. "Physical properties of the eutectic NaF-LiF-LaF3 melt ionic liquid system." Nuclear Physics and Atomic Energy 13, no. 2 (2012): 153–59. https://doi.org/10.15407/jnpae2012.02.153.

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Results of experimental studies on electrical conductivity, viscosity and thermo-electromotive force temperature dependencies of eutectic NaF-LiF-LaF3 melt ionic liquid mixture in the temperature range of (580 ÷ 800) °C are presented. It has been found, that at the temperature of (675 ± 5) °C the ionic mixture thermo-electromotive force changes its sing to reverse, with this change being correlated with viscosity temperature dependence type readjustment occurring at the same temperature. It has been shown that the maximum value of liquid ionic mixture electrical conductivity is achieved at the

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Arzikulova, Mukaddas. "Mathematical Model for Thermo-Electrical Instabilities in Semiconductors." Mathematical Modelling and Applications 9, no. 2 (2024): 32–37. http://dx.doi.org/10.11648/j.mma.20240902.11.

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Crystalline semiconductors under specific conditions, with an applied electric field, switch or oscillate between two conductive states, thus producing low frequency oscillations of electric current flowing through the sample and as a result of Joule heating oscillations of sample temperature. These phenomena are recognized to be thermo - electrical instabilities. Although current oscillations can be detected and registered experimentally, there is no device that can detect, register and allow us to study the sample temperature change in time. The purpose of this study is to learn about the re

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Miroshnichenko, Taisia, Sergey Minaev, and Kaoru Maruta. "Efficiency of the Small-Sized System with Thermo-Electrical Conversion of the Heat from Gas Combustion." Key Engineering Materials 685 (February 2016): 345–49. http://dx.doi.org/10.4028/www.scientific.net/kem.685.345.

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Present paper is an attempt to illustrate a specific character of gas combustion and thermo-electrical processes in small-sized power energy-supply devices with thermoelectric methods of heat conversion. The efficiency of the heat conversion into electricity by using of thermo-elements embedded in the solid walls is estimated for a system with heat regeneration by means of the heat conductivity of the solid elements.

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Popović, I., and M. Zlatanović. "Equivalent Circuits of Unipolar Pulsed Plasma System for Electrical and Optical Signal Analysis." Materials Science Forum 555 (September 2007): 89–94. http://dx.doi.org/10.4028/www.scientific.net/msf.555.89.

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Matching of pulse plasma generators to various gas discharges for surface treatment of materials depends on plasma processing equipment. In order to investigate the influence of pulse plasma generator and gas discharge parameters on electrical signal waveforms during the process of unipolar pulse plasma nitriding, equivalent electrical circuit was introduced. The influence of parasitic inductance of interconnection lines and vacuum chamber physical properties was also included in the given equivalent circuit. Gas discharge characteristics at different process parameters were investigated. It w

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Elminshawy, Nabil A. S., Amr Osama, Amany M. Saif, and Giuseppe Marco Tina. "Thermo-electrical performance assessment of a partially submerged floating photovoltaic system." Energy 246 (May 2022): 123444. http://dx.doi.org/10.1016/j.energy.2022.123444.

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6

Ferreiro Garcia, Ramon. "Prototyping disruptive self-sufficiency power machines composed by cascaded power units based on thermo-hydraulic actuators." JOURNAL OF ADVANCES IN PHYSICS 22 (September 19, 2024): 212–41. http://dx.doi.org/10.24297/jap.v22i.9662.

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This research focuses on developing a prototype for a disruptive Self-Sustaining Power Machine (SSPM) that consists of cascaded power units (PUs). Each PU integrates thermo-mechanical and thermo-hydraulic actuators to drive hydraulic pumps connected to generators. The prototype's design leverages two thermal cycle types, sVsVs and VsVs, which enable self-sustaining operations by employing several strategic capabilities that challenge the limitations of second-kind perpetual motion machines (PMMs). Therefore, key capabilities include: 1- Performing useful mechanical work through the expansion a

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Bhattacharya, Ranajoy, Naveen Kr Sahu, Arani Ali Khan, Hasina Khatun, and A. K. Sinha. "Electrical and thermo-mechanical analysis of beam recovery system for megawatt power gyrotron." Fusion Engineering and Design 88, no. 4 (2013): 253–57. http://dx.doi.org/10.1016/j.fusengdes.2013.03.020.

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Harvind, Yadav, Srivastav Durgesh, and Kumar |. Amit Kumar Yadav |. Akshay Goswami Gaurav. "Experimental Investigations and Analysis of Thermoelectric Refrigerator with Multiple Peltier Modules." International Journal of Trend in Scientific Research and Development 3, no. 3 (2019): 1337–40. https://doi.org/10.31142/ijtsrd23332.

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As the conventional refrigeration system are large in size and consumes a lot of electrical energy which in terns leads to releases of more green house gases for production of electricity which is major environmental concern nowadays. Thermo electric refrigerators are compact and consume less electrical energy which supports use of renewable energy resources such as solar, tidal, wind power, etc. major applications of thermo electric refrigerator are in medical storage systems, blood tissue transfer and as a portable refrigerator. Harvind Yadav | Durgesh Srivastav | Gaurav Kumar | Amit Kumar Y

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Khaled, Semyan, and Omar Ali. "NUMERICAL AND EXPERIMENTAL INVESTIGATION FOR HYBRID PHOTOVOLTAIC/THERMAL COLLECTOR SYSTEM IN DUHOK CITY." Journal of Environmental Engineering and Landscape Management 28, no. 4 (2020): 202–12. http://dx.doi.org/10.3846/jeelm.2020.13691.

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The study deals with the experimental and numerical investigation of the hybrid Photovoltaic-thermal solar collector system in Duhok city during seven months and includes different measurements of temperatures, water mass flow rate, wind velocity, and solar intensity. A one-dimensional mathematical model is used to simulate the transient processes with constant thermo-physical properties and heat transfer coefficients. The energy conservation equations are solved using implicit finite difference method. The numerical and experimental results showed satisfactory agreement with an error (2.36%)

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Arzikulova, Mukaddas. "Investigation of Thermo-Electrical Instabilities in a Semiconductor as 2D Dynamical Systems." Mathematical Modelling and Applications 9, no. 2 (2024): 38–42. http://dx.doi.org/10.11648/j.mma.20240902.12.

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A semiconducting sample placed in cryogenic media with applied electric field generates low frequency oscillations of electric current and sample temperature and known to be thermo-electrical instabilities. Although observation of current oscillations on oscilloscope is possible, change of sample temperature cannot be detected experimentally. Description of the phenomenon through mathematical equations helps to understand relationship of the two variables as well as their connection to deep trap behavior that are involved in supporting the instability. Mathematical model for thermo-electrical

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11

Lv, Jun, Minjie Shao, Yuting Xue, Xiaowei Gao, and Zhaoqian Xie. "A New Strong Form Technique for Thermo-Electro-Mechanical Behaviors of Piezoelectric Solids." Coatings 11, no. 6 (2021): 687. http://dx.doi.org/10.3390/coatings11060687.

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Piezoelectric materials are widely fabricated and investigated for potential applications in microelectromechanical systems as direct converters between mechanical and electrical signals, where some show pyroelectric features involving thermo-electro-mechanical interactions. This study aimed to introduce a novel numerical technique to predict the thermo-electro-mechanical behaviors of piezoelectric structures, based on a strong-form numerical framework called the element differential method. In this method, the shape functions of the isoparametric element and their first two derivatives were d

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Pirosca, Adrian Valeriu, Marcello Vecchio, Santi Agatino Rizzo, and Francesco Iannuzzo. "Evaluation of the Thermal Resistance in GaN HEMTs Using Thermo-Sensitive Electrical Parameters." Energies 16, no. 6 (2023): 2779. http://dx.doi.org/10.3390/en16062779.

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The thermal management of power converters is not only crucial for their own optimal operation and reliability, but also for the overall system in which they are operating. Reliability is a very serious aspect because power electronics systems are being increasingly widely adopted in mission-critical applications in the e-mobility sector, in smart grids, and other applications where safety and operational continuity are essential. The current trend towards miniaturization of power conversion systems and, consequently, towards high power density solutions is speeding up the diffusion of Gallium

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Asteekar, R., S. Senthamil Selvan, and R. Janani. "Waste Heat Management System for Hybrid Vehicles Using Thermoelectric Generator." Advanced Science, Engineering and Medicine 12, no. 8 (2020): 1063–66. http://dx.doi.org/10.1166/asem.2020.2669.

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The present scenario is like that the need of the electrical energy is growing rapidly whereas the resource availability is lagging behind the load demand due to its extinction which leads to hinder our overall generation. It has been observed that the sustainable resources have great future potential to take lead to generate power and supply demand. In the present scenario there exists a few energy resources equivalent to fuel resource. So, there must be a technology to trap the waste and unutilized heat available in the atmosphere and utilize it into the form useful electrical energy. In the

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Léger, Emmanuel, Albane Saintenoy, Christophe Grenier, et al. "Comparing Thermal Regime Stages along a Small Yakutian Fluvial Valley with Point Scale Measurements, Thermal Modeling, and Near Surface Geophysics." Remote Sensing 15, no. 10 (2023): 2524. http://dx.doi.org/10.3390/rs15102524.

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Arctic regions are highly impacted by the global temperature rising and its consequences and influences on the thermo-hydro processes and their feedbacks. Theses processes are especially not very well understood in the context of river–permafrost interactions and permafrost degradation. This paper focuses on the thermal characterization of a river–valley system in a continuous permafrost area (Syrdakh, Yakutia, Eastern Siberia) that is subject to intense thawing, with major consequences on water resources and quality. We investigated this Yakutian area through two transects crossing the river

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15

Fadhil Smaisim, Ghassan, Salema K. Hadrawi, Azher M. Abed, Hasan Sh Majdi, and Ali Shamel. "Thermo-economic analysis of the performance of the combined system with evacuated tube collectors." Clean Energy 7, no. 2 (2023): 242–52. http://dx.doi.org/10.1093/ce/zkac051.

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Abstract Using combined cooling, heat and power systems can be an appropriate substitute for preventing emissions of pollutants and excessive consumption of fossil fuels. Utilizing renewable energy in these systems as a source of power generation can be an appropriate substitute for fossil-fuel-based systems. Therefore, in this paper, cogeneration cooling, heat and power systems based on gas-fired internal combustion engines with a solar-thermal system with evacuated tube collectors have been modelled and thermo-economic analysis has been done to compare fossil-fuel-based systems. The required

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Krause, Eylon Eliyahu, and Dror Malka. "Optimizations of Double Titanium Nitride Thermo-Optic Phase-Shifter Heaters Using SOI Technology." Sensors 23, no. 20 (2023): 8587. http://dx.doi.org/10.3390/s23208587.

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A commercial thermo-optic phase shifter (TOPS) is an efficient solution to the imbalance problem in the fabrication process of Mach–Zehnder modulator (MZM) arms. The TOPS consumes electrical power and transforms it into thermal energy, which changes the real part of the effective refractive index at the waveguide and adjusts the MZM transfer function to work in the linear region. The common model being used today is constructed with only one heater; however, this solution requires more electrical power, which can increase the transmitter system cost. To reduce the system energy cost, we propos

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Dhandapani, Karthikeyan, Brian Roggeman, and David Rae. "A Systematic Approach to the Reliability Characterization of System in Package (SiP)." International Symposium on Microelectronics 2018, no. 1 (2018): 000186–92. http://dx.doi.org/10.4071/2380-4505-2018.1.000186.

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Abstract System-in-Package (SiP) solutions are gaining popularity across multiple market segments, dually reducing product design complexity for Original Equipment Manufacturers (OEMs) while increasing system performance and functionality. For SiP customers, product design complexity is reduced with the integration of electrical sub-system functionality into a module that can be designed into a product with relative ease. Further, logistical complexity is reduced, with the supplier carrying responsibility for the sub-system's quality and reliability. In addition, OEMs benefit from the performa

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18

Chen, Haifei, Shaoyang Ren, Yanglong Zhao, et al. "Study on thermo-electrical performance of spray-cooled concentrating photovoltaic system using oleic acid modified nanofluid." Solar Energy 269 (February 2024): 112358. http://dx.doi.org/10.1016/j.solener.2024.112358.

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19

Shishkovsky, Igor V. "Hysteresis modeling of porous SMA for drug delivery system designed and fabricated by the laser-assisted sintering." MRS Proceedings 1569 (2013): 141–47. http://dx.doi.org/10.1557/opl.2013.838.

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ABSTRACTIn this report we develop a complete mathematical model for a porous scaffold from nitinol (NiTi – intermetallic phase) with a shape memory effect (SME), fabricated layerwise via the selective laser sintering (SLS) process. The operation of the SME bio-fluidic MEMS involves such physical process as a heat transfer, a phase transformation with a temperature hysteresis, stress-strain and electrical resistance variations accompanied the phase transformation. The simulations were conducted for the electro- and a thermo- mechanical hysteresis phenomenon, during the SME in the porous nitinol

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20

Pichler, Franz, Niels Koester, and Alexander Thaler. "Thermo-electric simulation of battery-modules with reduced order modelling of linear electrical components." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 36, no. 5 (2017): 1488–500. http://dx.doi.org/10.1108/compel-02-2017-0075.

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Purpose This paper aims to present a fully coupled thermo-electrical finite-element battery model with an applied model-order reduction. The model is used to analyse the thermal design of battery modules during typical drive-cycles of electric vehicles. Design/methodology/approach A model-order reduction is applied, in which the electrical linear bus-bars are analysed in an a-priori step. For these bus-bars, special distributed basis-functions are computed, which make the solution of differential Ohm's law unnecessary during the transient simulation. Furthermore, the distributed basis-function

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21

Jiang, Tieliu, Mingqi Liu, and Jianqing Lin. "A Detailed Numerical Study of a Nanofluid-Based Photovoltaic/THERMAL Hybrid System under Non-Uniform Solar Flux Distribution." Sustainability 15, no. 5 (2023): 4377. http://dx.doi.org/10.3390/su15054377.

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The concentrated photovoltaic/thermal system (CPVT) adopting spectral beam splitting is a promising field of solar energy research. However, the thermo-electric properties of fluid-based CPVT collectors, which depend strongly on the non-uniform concentrated energy flux, remain unclear. This study aims to fill the gap and explore the thermo-electric properties of fluid-based CPVT collectors under non-uniform energy flux based on the finite volume method (FVM) with the Monte Carlo Ray-Trace (MCRT) method. The actual solar flux distribution on the receiver surface is obtained using Tracepro softw

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Hassoune, Hind, Mouna Ben zohra, Amine Riad, and Abdelilah Alhamanyi. "Improving electrical energy and producing thermal energy in solar photovoltaic system by integrating phase change materials." E3S Web of Conferences 297 (2021): 01021. http://dx.doi.org/10.1051/e3sconf/202129701021.

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Solar energy is a natural source that provides clean and renewable energy, which supplies two types of energy: thermal energy and photovoltaic energy. Whereas, the most effective way to exploit this energy is photovoltaic cells. However, for all the incident solar radiation, the solar panels can absorb a limited quantity of energy. While, the rest of radiation energy gets lost as heat, that increases the temperature of the photovoltaic cells, this is the reason why the productivity of electricity is decreased. Therefore, to exceed this issue and benefit from the two sources of sun radiation, a

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Stovpchenko, G. P., L. O. Lisova, I. O. Goncharov, and I. V. Gusiev. "Physico-chemical properties of the ESR slags system CaF2-Al2O3-(MgO, TiO2)." Journal of Achievements in Materials and Manufacturing Engineering 2, no. 89 (2018): 64–72. http://dx.doi.org/10.5604/01.3001.0012.7110.

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Purpose: The main task of this work was the developing of new compositions of the ESR slag that would keep the required amount of easily oxidizable elements in the superalloys and have the favourable physicochemical properties. Design/methodology/approach: Thermo-dynamic modeling was applied to estimate of oxidation effect of the slags on the Inconel 718 superalloy. Slag properties (viscosity, electrical conductivity and melting points) were measured by standard methodics. Findings: The effect of slags chemistry on the preservation of the active elements (aluminium, titanium) content in the su

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Akgün, İbrahim, Şaban Pusat, and Hasan Hüseyin Erdem. "Thermo-economic investigation of power generation using micro steam turbines in industrial facilities." AINTELIA SCIENCE NOTES 1, no. 1 (2022): 83–90. https://doi.org/10.5281/zenodo.8071000.

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As it is known, steam is used in many industrial facilities. If steam at different pressures is used in processes within the facility, the pressure of the steam must be reduced. A pressure reducer is used to reduce the vapor pressure with conventional methods. Electricity can be generated by removing the pressure reducer and replacing it with a micro steam turbine. Such a system not only allows the production of the heat energy needed by the facility without interruption, but also enables the generation of additional electrical energy in the facility. The aim of this study is to investigate th

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Akilu, Suleiman, Aklilu Tesfamichael Baheta, and K. V. Sharma. "Evaluation on Thermo-Electrical Characteristics of Sio2 Nanofluids for Fuel Cell Cooling Application in Automobiles." International Journal of Engineering & Technology 7, no. 3.17 (2018): 137. http://dx.doi.org/10.14419/ijet.v7i3.17.16638.

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Effective thermal management is critical requirement in fuel cell technologies to avoid the performance degradation during operation. Nanofluids offer the potential to address this cooling challenge in fuel cells better than pure fluids. However, due to the electrochemical changes associated with the proton exchange membrane system, a strict limit on thermal and electrical properties of coolant needs to comply. In this study, the thermal and electrical conductivities of silicon dioxide (SiO2) dispersion of ethylene glycol (EG), glycerol (G), and 40:60 by mass ethylene glycol-glycerol (EG/G) wa

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Weiss, Klaus-Peter, Nadezda Bagrets, and Camelia Schulz. "Cryogenic thermo-physical properties of additive manufactured materials." IOP Conference Series: Materials Science and Engineering 1302, no. 1 (2024): 012005. http://dx.doi.org/10.1088/1757-899x/1302/1/012005.

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Abstract Environmentally friendly aviation is one of the great challenges of this century. One promising approach is electric flight, in which an energy carrier (e.g. liquid Hydrogen LH2) and an electric powertrain work together. Within the scope of the joint project AdHyBau, the overarching goal is the development of new additive processes and fibre composite-metal hybrid designs for use in the cryogenic environment of such an electric propulsion system. Additive manufacturing of complex components for use in the cryogenic temperature range down to 20K (LH2) is one essential component in the

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Morandin, Matteo, François Maréchal, Mehmet Mercangöz, and Florian Buchter. "Conceptual design of a thermo-electrical energy storage system based on heat integration of thermodynamic cycles – Part B: Alternative system configurations." Energy 45, no. 1 (2012): 386–96. http://dx.doi.org/10.1016/j.energy.2012.03.033.

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De Robbio, Roberta, Maria Cristina Cameretti, and Salvatore Agizza. "Design and Thermo-Economic Analysis of an Integrated Solar Field Micro Gas Turbine Biomass Gasifier and Organic Rankine Cycle System." Energies 16, no. 20 (2023): 7050. http://dx.doi.org/10.3390/en16207050.

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A micro gas turbine (MGT) is an advanced technology with a simple structure and fast load response. It represents a good choice for the next generation of distributed power systems, where fossil fuels are going to be largely replaced by biofuels and renewable sources. In this context, this work aims to investigate and compare the performance of gradually more complex energy systems integrating a micro gas turbine plant: simple cogenerating asset, integrating a solar field, presence of a gasifier, and the addition of a bottoming ORC. In all cases, a thermo-economic analysis has been carried out

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Diazdelacruz, Jose, and Miguel Martin-Delgado. "Quantum Information Remote Carnot Engines and Voltage Transformers." Entropy 21, no. 2 (2019): 127. http://dx.doi.org/10.3390/e21020127.

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A physical system out of thermal equilibrium is a resource for obtaining useful work when a heat bath at some temperature is available. Information Heat Engines are the devices which generalize the Szilard cylinders and make use of the celebrated Maxwell demons to this end. In this paper, we consider a thermo-chemical reservoir of electrons which can be exchanged for entropy and work. Qubits are used as messengers between electron reservoirs to implement long-range voltage transformers with neither electrical nor magnetic interactions between the primary and secondary circuits. When they are a

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Aliyev, I. I., E. I. Mamedov, F. V. Yusubov, L. F. Masiyeva, and Kh M. Gashimov. "SYNTHESIS AND PHYSICO-CHEMICAL INVESTIGATION OF ALLOYS OF THE Sb2S3–Cu2Cr4Te7 SYSTEM." Azerbaijan Chemical Journal, no. 1 (March 28, 2023): 162–68. http://dx.doi.org/10.32737/0005-2531-2023-1-162-168.

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To study the nature of the interaction between Sb2S3 and Cu2Cr4Te7 compounds, alloys were synthesized in a wide range of concentrations and studied using physicochemical analysis (DTA, XRD, MSA, as well as measurements of density and microhardness) and a phase diagram was constructed. The state diagram of the system is partially quasi-binary, with the formation of eutectic equilibrium and peritectic transformation. The regions of homogeneity in the Sb2S3–Cu2Cr4Te7 system were determined from the initial components. In a system based on the Sb2S3 compound, solid solutions reach up to 4 mol % Cu

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N, Melnik, and Mustyatsa O. "TRANSFORMATION OF THE NATURE OF THE CONDUCTIVITY OF HIGHLY CONDUCTIVE CHALCOGENIDE MELTS TO TOWARDS THEIR ELECTROLYTIC CAPACITY." National Transport University Bulletin 1, no. 48 (2021): 208–16. http://dx.doi.org/10.33744/2308-6645-2021-1-48-208-216.

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Ibe aim of this work is to study the nature of the conductivity of melts of iron chalcogenides (Fe-Se, Fe-Te, FeS-Na2S) and the conditions of its possible transformation in order to bring the high-conductivity melt to a state suitable for electrolytic decomposition into metal and chalcogen. To solve this problem, a set of methods was used - electrical conductivity (ж), thermo-EMF (a), polarization characteristics (І-V) and electrolysis (n). ж of high-conductivity melts was investigated by the four-probe method on a direct current in a quartz U-shaped cell of capillary type with graphite electr

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Platzer, A., Peter Supancic, C. Lembacher, U. Theiszl, and Robert Danzer. "Thermography and Simulation as a Combined Method for Failure Analysis of PTCs." Key Engineering Materials 290 (July 2005): 54–61. http://dx.doi.org/10.4028/www.scientific.net/kem.290.54.

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PTCs are electrical resistors (thermistors) with a positive temperature coefficient. They change their resistivity up to seven orders of magnitude within a certain temperature range. Though these parts are only loaded electrically, they often fail due to thermo-mechanical stresses caused by Joule self heating. With the aid of an infrared camera system the temperature distributions of PTCs in service were investigated. They show a big variety in appearance, often strongly differing from the temperature distribution predicted by a model-calculation using homogenous material properties. The tempe

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Luminosu, Ioan. "Experimental studies and economic considerations on a thermosolar pilot system destined for house temperature maintenance." Thermal Science 7, no. 1 (2003): 47–61. http://dx.doi.org/10.2298/tsci0301047l.

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The "Politehnica" University of Timisoara has built a thermo solar system implemented on the ground floor and first floor of a building. The system is made up of solar water collectors, an air-water heat exchanger, a bedrock heat accumulator and a minimal thermal loss enclosure. The statistical processing of the measurements performed during spring and autumn 2000 resulted in determining the average features of the system and in the evaluation of its efficiency in maintaining the enclosure's temperature, enclosure assimilated to a living space. The efficiency of the system is 30%. During sprin

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Bajpai, Ankur, and Stéphane Carlotti. "The Effect of Hybridized Carbon Nanotubes, Silica Nanoparticles, and Core-Shell Rubber on Tensile, Fracture Mechanics and Electrical Properties of Epoxy Nanocomposites." Nanomaterials 9, no. 7 (2019): 1057. http://dx.doi.org/10.3390/nano9071057.

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The paper investigates the effect of adding a combination of rigid nanoparticles and core-shell rubber nanoparticles on the tensile, fracture mechanics, electrical and thermo-mechanical properties of epoxy resins. SiO2 nanoparticles, multi-walled carbon nanotubes (MWCNT’s), as rigid nanofillers, and core-shell rubber (CSR) nanoparticles, as soft nanofillers were used with bisphenol-A-based epoxy resin. Further, the rigid fillers were added systematically with core-shell rubber nanoparticles to investigate the commingled effect of rigid nanofillers and soft CSR nanoparticles. The resulting matr

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Al-Sakini, Sahar. "Design and Implementation of Low Power Thermoelectric Refrigerator." Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), no. 2 (October 9, 2021): 260–81. http://dx.doi.org/10.55562/jrucs.v40i2.203.

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The Objective of this study is to design a prototype of thermoelectric Refrigerator using Peltier effect on thermoelectric refrigerate or to achieve and protect a specific temperature, to be maintained a selected temperature at acceptable range. The Interior volume of the thermoelectric refrigerator is 6.8 Liter. The design requirements are to cool the volume (6.8Liter) to a suitable temperature within a short time, low power and low cost. The Thermo electrical refrigeration is a new ersatz because it can change waste electricity power to useful cooling, so it's increasing demand desired at th

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Imran, Kazi A., and Kunigal N. Shivakumar. "Enhancement of electrical conductivity of epoxy using graphene and determination of their thermo-mechanical properties." Journal of Reinforced Plastics and Composites 37, no. 2 (2017): 118–33. http://dx.doi.org/10.1177/0731684417736143.

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A three-roll mill processing technique was used to disperse graphene nanoplatelets into epon 828 epoxy system. As a first step of this research, processing of graphene/epoxy nanocomposites was explored with different weight percentages of graphene. After establishing an optimal and repeatable process to achieve good electrical properties, the materials were tested for thermal conductivity and mechanical properties. The xGnP-25 graphene nanoplatelet supplied by XG Science Inc. was used; the graphene average diameter was 25 μm and thickness was 6–10 nm. Mechanical mixing, sonication and three-ro

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Hussain, M. Imtiaz, Gwi Hyun Lee, and Jun-Tae Kim. "Simulation and Model Validation of a Multi-Concentration Points Concentrated Photovoltaic Thermal System." Journal of Nanoelectronics and Optoelectronics 13, no. 10 (2018): 1552–56. http://dx.doi.org/10.1166/jno.2018.2388.

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In this study, the transient behavior of a concentrated photovoltaic thermal (CPV/T) system is assessed using one-dimensional mathematical model. The model is based on the heat balance of the concentrated photovoltaic (CPV) solar cells, receiver pipe, thermal fluid, insulation, and the storage tank attached to PV/T system via insulated pipes. The mathematical model was developed and solved using ordinary differential equation solvers in MATLAB® computer program. The interdependence thermo-electric dynamic responses of the CPV/T system were modeled and analyzed by considering two cases such as

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Mamedov, E. I. "INVESTIGATION OF PHASE EQUILIBRIA AND PHYSICO-CHEMICAL PROPERTIES OF OBTAINED PHASES IN THE Sb2S3-Cr2Se3 SYSTEM." Azerbaijan Chemical Journal, no. 3 (September 19, 2023): 152–60. http://dx.doi.org/10.32737/0005-2531-2023-3-152-160.

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Using complex of physicochemical methods of analysis (DTA, XRD, MSA, as well as measurements of density and microhardness), the phase equilibria in the Sb2S3-Cr2Se3 system was studied and a phase diagram was constructed. It is established that the system is quasi-binary and has eutectic type T-x diagram. In the process of chemical interaction, a compound with composition Cr2Sb2S3Se3 is formed in the system. The Cr2Sb2S3Se3 compound melts incongruently at 6500C., A limited area of the solid solution based on the initial components of the system is formed. The coordinates of the eutectic formed

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Daniol, Mateusz, Lukas Boehler, Ryszard Sroka, and Anton Keller. "Modeling and Implementation of TEG-Based Energy Harvesting System for Steam Sterilization Surveillance Sensor Node." Sensors 20, no. 21 (2020): 6338. http://dx.doi.org/10.3390/s20216338.

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The aim of this work is a proof of concept, that medical Internet of Things (IoT) sterilization surveillance sensors can be powered by using the heat during a steam sterilization procedure. Hereby, the focus was on the use of thermo-electrical generators (TEG) to generate enough power for an ultra-low-power sensor application. Power generation requirement of the sensor was 1.6 mW over the single sterilization cycle. The thermal gradient across the TEG has been achieved using a highly efficient aerogel-foam-based thermal insulation, shielding a heat storage unit (HSU), connected to one side of

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Palhade, R. D., V. B. Tungikar, G. M. Dhole, and S. M. Kherde. "Coupled Field Thermoelectric Simulation of High Voltage Ceramic Cap and Pin Disc Type Insulator Assembly." International Journal of Manufacturing, Materials, and Mechanical Engineering 4, no. 1 (2014): 69–86. http://dx.doi.org/10.4018/ijmmme.2014010105.

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Transmission of high power at high voltages over very long distances has become very imperative. At present, throughout the globe, this task performed by overhead transmission lines. The dual task of mechanically supporting and electrically isolating the live phase conductors from the support tower is performed by insulators. The electrical potential, field and temperature distribution along the insulators governs the possible effects, which is quite detrimental to the system. However, a reliable data on electrical potential, field and temperature distribution in commonly employed insulators a

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Adesanya, Samuel O., Peace O. Banjo, and Ramoshweu S. Lebelo. "Exergy Analysis for Combustible Third-Grade Fluid Flow through a Medium with Variable Electrical Conductivity and Porous Permeability." Mathematics 11, no. 8 (2023): 1882. http://dx.doi.org/10.3390/math11081882.

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A mathematical investigation of a thermodynamical system linked with energy management and its impact on the environment, especially climate change, is presented in this study. In this regard, a numerical investigation of the flow and heat transfer of hydromagnetic third-grade liquid through a porous medium. The permeability of the medium and electrical conductivity of the fluid are assumed to be temperature functions. The appropriate mathematical formulations for momentum, energy, and entropy equations are presented in both dimensional and dimensionless forms. We obtained the numerical soluti

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Prof., Rajendra. P. Patil* Pradhyumna Suryawanshi Akshay Pawar Avdhoot Pawar. "THERMOELECTRIC REFRIGERATION USING PELTIER EFFECT." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 5 (2017): 614–18. https://doi.org/10.5281/zenodo.800636.

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In the field of military and medical science there are refrigerators used to cool samples or specimens for preservation. They include refrigeration units for storing blood plasma and other blood products, as well as vaccines and other medical or pharmaceutical supplies. They differ from standard refrigerators used in homes or restaurant because they need to be very hygienic and completely reliable. However, in case of transportation of component from one place to another place there is no refrigeration system. Due to such problem, portable refrigeration system is to be used. Thermoelectric ref

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Kaci, Karim, Mustapha Merzouk, Nachida Kasbadji Merzouk, et al. "Design, optimization and economic viability of an industrial low temperature hot water production system in Algeria: A case study." International Journal of Renewable Energy Development 12, no. 3 (2023): 448–58. http://dx.doi.org/10.14710/ijred.2023.49759.

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Solar energy has a great potential in many areas of industrial activity in Algeria. This is because most of Algeria has high levels of sustainable solar insulation. Unfortunately, few industries use solar energy for hot water generation, but some industrial processes require hot water at temperatures that can be easily obtained from solar thermal panels. This paper presents a case study to investigate the technical and financial feasibility of a solar-powered industrial agro-processing system in Algiers. Based on the solar collectors connection type for which the economic feasibility study was

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Sharma, Dheeraj Kumar, Mainak Bandyopadhyay, Jaydeep Joshi, and Arun K. Chakraborty. "Determination of Residual Stresses in Ceramic-Metal Brazed Joint using Finite Element Analysis (FEA) and Experimental Validation of the Results." SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology 12, no. 01 (2020): 1–7. http://dx.doi.org/10.18090/samriddhi.v12i01.1.

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Ceramic vacuum feedthroughs are an inevitable requirement for any vacuum system which requires electrical feedlines to be inserted into the vacuum environment. These feedthroughs consist of metal-ceramic-metal transition and, therefore, require the brazing process as a joining technique. This process allows joining two base materials, i.e., Alumina and Kovar, for this case, which manifests different thermo-mechanical response. The difference between the coefficient of thermal expansion (CTE) of these materials causes the development of residual stresses during the cooling phase of the brazing

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Khan, W. M., W. H. Shah, N. Khan, M. Tufail, S. Khan, and W. A. Syed. "Effects on the seebeck co-efficient and electrical properties of Tl10-x ATe6 (A= Pb & Sn) in chalcogenide system." Journal of Ovonic Research 17, no. 2 (2021): 201–8. http://dx.doi.org/10.15251/jor.2021.172.201.

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The different elements are doping in the tellurium telluride to determine the different properties like electrical and thermal properties of nanoparticles. The chalcogenide nanoparticles can be characteristics by the doping of the different metals which are like the holes. We present the effects of Pb and Sn doping on the electrical and thermoelectric properties of Tellurium Telluride Tl10-xPbxTe6 and Tl10-xSnxTe6(x=1.00, 1.25, 1.50, 1.75, 2.00) respectively, which were prepared by solid state reactions in an evacuated sealed silica tubes. Structurally, all these compounds were found to be pha

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Sophy-Mahfoudi, Nadjiba, Sai-Vandhan Sekharam, M’hamed Boutaous, and Shihe Xin. "Model-Based Design of LFP Battery Thermal Management System for EV Application." Batteries 10, no. 9 (2024): 329. http://dx.doi.org/10.3390/batteries10090329.

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This study uses an equivalent circuit model (ECM) and real-time data to model lithium iron phosphate (LFP) batteries to accurately represent their thermo-electrical behavior. In particular, the focus is on a thermal management perspective in high-performance electric vehicles (EVs). The ECM-based battery management system, which effectively captures the non-linear behavior of Li-ion batteries, is developed to optimize the safety, lifespan and overall performance of the EV battery management system. The ECM-based battery model is validated using real-time drive cycle data to enhance the underst

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RAO, B. SRINIVASA, K. V. RAMESH, and D. L. SASTRY. "RELATIVE STUDIES OF TRANSPORT PROPERTIES OF ZnO SUBSTITUTED LEAD VANADATE SYSTEM IN BOTH GLASS AND CRYSTALLINE FORMS." Modern Physics Letters B 23, no. 20n21 (2009): 2521–31. http://dx.doi.org/10.1142/s0217984909020576.

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Glasses of x( ZnO )(50 - x) PbO :50 V 2 O 5 system were prepared by melt-quench process in the range x = 0 mol % to 15 mol%. Measurements are reported for DC electrical conductivity as well as thermo electrical power for these samples in both glass and crystalline forms in the temperature range of 27°C and 227°C. The ESR studies of these samples at room temperature are reported. These spectra are characterized by well-resolved eight-line powder pattern. It is observed that the ESR spectra obtained in the crystalline form, the hyperfine structure is nearly smeared out and the spectra are charac

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Hartner, Walter, Martin Niessner, Francesca Arcioni, et al. "Reliability and Performance of Wafer Level Fan Out Package for Automotive Radar." Journal of Surface Mount Technology 34, no. 1 (2021): 32–39. http://dx.doi.org/10.37665/smt.v34i1.12.

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Embedded wafer level ball grid array (eWLB) or FO-WLP (Fan-out wafer-level packaging) is investigated as a package for MMICs (Monolithic Microwave Integrated Circuit) for automotive radar applications in the 77GHz range. Special focus is put on the thermo-mechanical performance to achieve automotive quality targets. The typical fatigue modes “solder ball fatigue” and “copper fatigue”, evolving during thermo-mechanical stress like cycling on board will be discussed. Simulation as well as experimental preparation results for typical fatigue levels are given. In addition, several influencing para

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Chen, Xiao-an, Jun-feng Liu, Ye He, Peng Zhang, and Wen-tao Shan. "An integrated model for high-speed motorized spindles – Dynamic behaviors." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 227, no. 11 (2013): 2467–78. http://dx.doi.org/10.1177/0954406213475406.

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With increasing popularity in high-speed machining due to its high efficiency, there is a vital need for more accurate prediction of dynamic behaviors for high-speed motorized spindles. The spindle units integrate tools with built-in motors hence a comprehensive model is required to include the multi-physics coupling property. This article presents an integrated model which consists of four coupled sub-models: state, shaft, bearing, and thermal model. Using the variational principle, a state model for the motor-spindle system is generated, which can describe the running state of the spindle, a

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Ahmad, Afaq. "Composition-induced phase transition in a [Ag2HgI4:0.2AgI] mixed composite system doped with CuI." Open Chemistry 8, no. 6 (2010): 1227–35. http://dx.doi.org/10.2478/s11532-010-0098-8.

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AbstractA novel composite superionic system, [Ag2HgI4:0.2AgI]:xCuI, (x = 0.2, 0.4, 0.6 mol. wt.%), was prepared and [Ag2HgI4:0.2AgI] mixed system was used as the host. Electrical conductivity was measured to study the transition behavior at frequencies of 100 Hz, 120 Hz, 1 kHz, and 10 kHz in the temperature range 90°–170°C by a Gen Rad 1659 RLC Digibridge. Sharp increase in conductivity was observed for β-α phase transitions. As a result of increase in the dopant-to-host ratio, the conductivity of the system exhibited Arrhenius (thermally activated)-type behavior. X-ray powder diffraction, dif

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