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A double-pass optical beam deflection instrument for the measurement of diffusion, thermodiffusion and Soret coefficients in liquid mixtures and its application to polymer analysis J. Non Equilib. Thermodyn. (IF 6.6) Pub Date : 2024-04-24 Roman Reh, Mareike Hager, Werner Köhler
We have developed a new double-pass optical beam deflection instrument for the measurement of diffusion, thermodiffusion and Soret coefficients in liquid mixtures. The increased sensitivity of the instrument results from a second passage of the readout laser beam through the Soret cell containing the sample. An elegant description of the total beam deflection is achieved by means of a transfer matrix
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Sustainable assessment of low viscous biofuel for compression ignition engine using wear debris analysis – Tribological investigation Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-23 Konareddy Harshavardhan Reddy, Nanthagopal Kasianantham
Lemon Peel oil is one of the ecologically friendly biofuels has many significant benefits for power generation applications. Lemon peel oil is extracted from left over rinds of lemon peel by applying steam distillation process. In the present work, long term durability study of compression ignition engines has been conducted using 10 % and 20 % low viscous biofuels with diesel. For 256 h long term
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A between-wall heat transfer simulation approach based on the lattice Boltzmann method and its application in tube heat transfer analysis Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-23 Yingtao Sun, Di Bian, Zhenhua Wei, Jianfeng Zhou, Chunlei Shao
Between-wall heat transfer is a fundamental physical process. As a typical coupling heat and mass transfer process, between-wall heat transfer-based problems can be solved conveniently on the basis of advanced computation methods among which the lattice Boltzmann method (LBM) has been widely used in the analysis of simple heat and mass transfer cases. To investigate the applicability of LBM in more
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An improved methodology for thermal calculation and design optimization of a thermosiphon waste heat boiler for CCPP Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-23 Iurii Dolganov, Alexander Epifanov, Pavel Patsurkovskyi, Bohdan Lychko
The study is dedicated to enhancing design and computational methodologies for thermosiphon waste heat boilers (WHB) within combined cycle power plants (CCPP). The optimized WHB design and an improved thermal calculation approach are shown. The efficiency of the proposed WHB has been improved by optimizing the area and arrangement of the surface. The novel method incorporates considerations for the
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Influence of waveforms on the heat transfer behavior of multi-orifice synthetic jet Exp. Heat Transf. (IF 3.5) Pub Date : 2024-04-22 Pushpanjay K. Singh, Harekrishna Yadav, Prabhat K. Upadhyay, Santosh K. Sahu
This experimental investigation aims to analyze the heat transfer capabilities of both single and multi-orifice SJs (MOSJs) for varied waveforms(sine, square, and triangular), at a fixed Reynolds n...
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Research on the influence of solar radiation fuzzy adaptive system on the wet and hot environment in greenhouse Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-22 Zhao Mingzhi, Liu Yingjie, Han Zheng, Chang Chun, Bao Daorina, Bakhramzhan Sabirovich Rasakhodzhaev, Akhadou Jobir
Chinese solar greenhouse (CSG) is an artificially constructed agricultural facility that provides a suitable environment for crop growth. However, the imbalanced temperature and humidity phenomenon occurring in greenhouse during summer greatly affects crop yield. This article proposes the application of solar radiation fuzzy adaptive system in greenhouse to address this issue. The design process includes
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Artificial intelligence -based prediction of heat transfer enhancement in ferrofluid flow under a rotating magnetic field: Experimental study Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-21 Somayeh Davoodabadi Farahani, Abazar Abadeh, Asˈad Alizadeh, Zarindokht Helforoush
The utilization of various techniques, both passive and active, to enhance heat transfer in fluids by scientists is continually advancing. One of the active methods being explored is the impact of a magnetic field (B) on flow to improve heat transfer. This study focuses on experimentally evaluating the effectiveness of B and the rotation of B on heat transfer of ferrofluid. The findings indicate that
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Experimental study on the performance of micro gas turbines under different intake environments Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-21 Liu Cong, Shi Zhijun, Li Yimin, Zhou Zhongning, Ma Lina
This article uses experimental methods to measure the operational performance and pollutant emissions of micro gas turbines in different intake environments, and analyzes the feasibility of replacing mine ventilation fans with micro gas turbines. The results show that when the compressor efficiency is increased from 70 to 90 , the total efficiency of the micro combustion engine is increased from 28%
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Enhanced study of phase change thermal storage using active rotating tank wall coupled fins combined with eccentric design Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-20 Xinle Yang, Baofeng Li, Shujuan Bu, Shuai Yan, Junwei Gao, Ning Yu
To address the low thermal conductivity of phase change materials and e improve heat storage, a novel rotating T-LHTESU structure is proposed. Numerical simulations systematically analyze the effects of rotation speed, various eccentricities and wall temperature on the performance of phase change heat storage. The results show that the introduction of rotation in the intermediate sleeve shortens the
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Investigation of the simultaneous effect of fouling and ambient conditions on cooling performance and water consumption of a wet cooling tower Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-20 Ali Arefimanesh, Mohammad Mahdi Heyhat
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An investigation shell and tube heat exchanger for cooling system: A case study of biodiesel plants using lauric acid Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-20 Anggara Dwita Burmana, Rondang Tambun, Bode Haryanto, Maya Sarah, Vikram Alexander
Shell and Tube Heat Exchanger (STHE) is a commonly used type of heat exchanger in various industries due to its cost-effectiveness and ease of maintenance. Continuous washing and maintenance of STHE play an important role in influencing both the quality and quantity of production from biodiesel plants. In this particular investigation, the STHE serves as a cooling medium for biodiesel production, with
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Thermal radiation and propagation of tiny particles in magnetized Eyring–Powell binary reactive fluid with generalized Arrhenius kinetics Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-20 S.O. Salawu, T.A. Yusuf, A.M. Obalalu, E.O. Fatunmbi
The interest in improving the industrial and engineering working fluid for optimal productivity inspired studies on various fluid materials. Cauchy stress tensor fluids with suitable non-Newtonian rheological properties will enhance industrial fluids. Thus, Eyring-Powell fluid with applicable properties serves as a platform to promote engineering base fluid materials. As such, this study examines tiny
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The integration of double-layer triangular micro-channel in three-dimensional integrated circuits for enhancing heat transfer performance Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-20 Huan Huang, Zong-jie Zeng, Peng Xu
This paper proposed a new heat dissipation structure called double-layer triangular micro-channel (DLTMC) to solve the increasingly serious thermal problem of three-dimensional integrated circuits (3D-ICs). The matrix equation of heat transmission is established to derive steady-state temperature of 3D-ICs with embedded DLTMC, which is based on equivalent thermal resistance network. According to proposed
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Evaluation of heat transfer performance of a channel mounted with square-wing perforated V-type baffles Exp. Heat Transf. (IF 3.5) Pub Date : 2024-04-19 Smith Eiamsa-Ard, Arnut Phila, Chinaruk Thianpong, Varesa Chuwattanakul, Naoki Maruyama, Masafumi Hirota
The current study examines the aerothermal performance behaviors of a rectangular-channel with square-wing perforated V-type baffles (SW-PVBs). The SW-PVBs were attached to lower channel walls at f...
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Optimisation of design parameters for a novel two-piston ionic compressor applied in hydrogen storage Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-19 Yi Guo, Qi Wang, Yuming Tang, Yuli Wang, Xueyuan Peng
The ionic compressor is an advanced and prospective compression technology for hydrogen storage. However, a complex wave phenomenon was observed inside the compression chamber due to the fluid flow vortex. This complex gas-fluid interaction can be intervened by a new mechanical design of the motion piston. In this paper, the thermodynamic performance of a novel homocentric two-piston ionic compressor
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Experimental study on flame interaction, gas temperature distribution, and radiative heat flux from two rectangular burning propane sources Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-19 Bo Li, Yangjin Shi, Liangjie Guo, Shaohua Mao, Kaihua Lu
This work experimentally investigates the flame interaction (flame merging and flame height), gas temperature distribution, and radiative heat flux from two rectangular propane burners by varying total heat release rate (80–360 kW) and burner spacing (0–1.28 m). The results show that the dominant mechanism of air entrainment rate changes from spacing to heat release rate with increasing spacing, making
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Experimental investigation of air step cooling by the combination of spray and chord grid for mine cooling Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-19 Minhua Huang, Haiqiao Wang, Shiqiang Chen, Hui Zhu, Qiaoyun Han, Dong Liu
To address the issues of heat and humidity hazards, as well as insufficient air volume in deep mining operations, a novel cooling method combining spray and chord grid is proposed. To investigate the cooling dynamics, an experimental platform integrating both spray and chord grid components is independently developed. Field boundary conditions are simulated to conduct orthogonal experimental research
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Numerical investigation of the influence of thermal protective fabric deformation on heat transfer from thermal radiant heat to human skin Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-19 Meiyan Xin, Jiazhen He, Jing Guo, Zhongwei Chen, Aifang He, Yan Chen, Hui Wang
Operators in thermal hazardous environments are more susceptible to burns during physical motion due to the potential deformation of thermal protective clothing. To study the influence of fabric deformation on heat transfer, a model of a three-layer thermal protective fabric system with stretching and compression deformation throughout the heat exposure and cooling phases was established and coupled
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Thermal performance of a motile-microorganism within the two-phase nanofluid flow for the distinct non-Newtonian models on static and moving surfaces Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-19 Hatem Gasmi, A.M. Obalalu, A.O. Akindele, S.A. Salaudeen, Umair Khan, Anuar Ishak, Amir Abbas, Taseer Muhammad, Syed Modassir Hussain, Ahmed M. Abed
Nanofluid plays a crucial role in addressing the heat transmission challenges facing the industries including chemical processing systems, automobile radiators, spacecraft design, concrete heating, solar thermal conversion systems, etc. Consequently, this research is devoted to analyzing the solar radiation mechanism, thermophoresis and Brownian motion under unique conditions, specifically, temperature
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SiO2@Cu core-shell nanostructure impregnation on phase changed material (paraffin) for thermal energy storage Exp. Heat Transf. (IF 3.5) Pub Date : 2024-04-16 Neetu Bora, Deepika P. Joshi, Mrinal Kanti Adak
The present research aims to achieve a shape-stable, and leakage-proof material for thermal energy storage (TES). The leakage analysis of 20 wt.% SiO2@Cu PCM shows 0.05%, as a result, more testing ...
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Comprehensive numerical modeling of intermittent flow cooling with enhanced photovoltaic efficiency in PVT/NPCM systems Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-18 Hui Chen, Jianfeng Zhang, Ming Shen, Hui Fang, Yiren Ma
The photoelectric conversion efficiency of photovoltaic thermal (PVT) systems is a key concern in solar energy research. The widespread use of continuous nanofluid cooling in PVT/NPCM (Nano-Enhanced Phase Change Material) systems leads to heightened energy consumption. In order to improve efficiency of the PVT/NPCM systems, a two-dimensional transient heat transfer numerical model is established to
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An experimental approach to heat loss measurement of horizontal two-phase flow boiling in low-pressure low-flow (LPLF) conditions Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-18 Mehdi Kabir
A crucial parameter remarkably influencing the reliability and accuracy of vapor quality measurements in flow boiling experiments is the measurement of heat loss. The latent heat loss estimation in two-phase flow boiling sounds more demanding than that of sensible heat loss in single-phase flow experiments. To accurately investigate the impact of vapor quality on the heat transfer coefficient of flow
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Ignition and combustion of Al–Mg–Li alloy particles at elevated pressures Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-18 Yuezu Miao, Shengji Li, Yanjing Yang, Xiaohong Zhang, Xuefeng Huang, Hongyan Li, Zhao Qin
Al–Mg–Li ternary alloy particles can be a promising metal additive to replace aluminum in solid propellants to improve combustion efficiency by reducing agglomeration during combustion. In this paper, Al–Mg–Li ternary alloy was prepared and its basic physical and chemical characterization parameters were obtained by SEM-EDS, ICP-AES, and XRD analysis. The ignition and combustion characteristics of
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Thermal analysis of 4-phase 8/6 SRM for EV application Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-18 S. Rani, R. Jayapragash
This article provides a comprehensive analysis of the thermal characteristics of a 4-phase 8/6 switching reluctance motor (SRM) designed for use in an e-rickshaw (3-wheeler) application. The determination of core and copper losses is achieved through electromagnetic analysis using Finite Element Analysis (FEA). The analysis is conducted via MOTORCAD, a multiphysics design software. This work includes
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Effect of mechanical stirring on heat transfer and flow of crude oil in storage tanks under different heating methods Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-18 Mingyu Lei, Jian Zhao, Hongtao Wang, Xingchao Zhou
Mechanical stirring can promote uniform distribution of crude oil temperature and increase the heating rate, but the effect is different for different heating methods in crude oil storage tank. In this paper, jet heating and tubular heating are used as the heating methods in the tank, the physical and mathematical models under the synergy of two heating methods and mechanical stirring are established
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Thermodynamic analysis of pavement roads underground heat harvesting through water pipelines for effective management of urban heat island effect integrated to space cooling applications Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-18 Fariha Niaz, Yusuf Bicer, Luai El-Sabek, Abdulkarem I. Amhamed
Urban heat island effect drastically affects the climate by approximately increasing the surroundings temperature by 2°C, thus, rises the energy demand for space cooling. As roads/asphalt pavements makes 20–30% of urban areas that are fully exposed to solar radiations, this unused energy can be utilized by laying down a network of underground cross-linked polyethylene (PEX) pipes full of heat transfer
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Corrigendum to “A new optimized artificial neural network model to predict thermal efficiency and water yield of tubular solar still” [Case Stud. Therm. Eng. 30 (2022) 101750] Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-17 Essam B. Moustafa, Ahmed H. Hammad, Ammar H. Elsheikh
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Machine learning-based Nusselt number prediction for falling-film evaporators in absorption refrigeration systems Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-17 Thi Nhan Nguyen, Syed Muhammad Ammar, Chan Woo Park
The evaporator serves as a pivotal component of an absorption refrigeration system (ARS), bolstered by improved wettability and mitigation of the irregular arrangement of the liquid film. The complexities of the evaporation heat transfer characteristics of falling films have led to numerous empirical correlations for falling-film Nusselt number () estimation, demanding substantial computational resources
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A novel zero emission combined power and cooling system for concentrating solar power: Thermodynamic and economic assessments and optimization Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-16 Yan Sun, Hong-Wei Li, Di Wang, Chang-He Du
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Lattice Boltzmann study on magnetohydrodynamic double-diffusive convection in Fe3O4–H2O nanofluid-filled porous media Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-16 Yanyan Feng, Cunhai Wang
Magnetohydrodynamic double-diffusive convection (MHD-DDC) in porous media has substantial significance in broad applications. However, due to the complexity of the DDC problems involving nanofluid, porous media, and external magnetic field at the same time, the MHD-DDC in nanofluid-filled porous media has rarely been studied. Besides, previous research on MHD convection problems usually focuses on
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Experimental studies of semi hermetic single screw compressor with variable speed in heat pump Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-16 Qiangyu Wen, Ruiping Zhi, Yuting Wu, Biao Lei, Guohong Ban
A single screw compressor is widely studied as a promising compressor technology applied in heat pumps. The capacity control mechanism is required for the compressor to satisfy the actual heating capacity under different working conditions. In this paper, the frequency conversion regulating mechanism by changing the motor rotating speed is employed to control the capacity of the single screw compressor
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Comprehensive experimental investigations on Co-combustion dynamics and multi-pollutant formation characteristics of coal gangue and biomass in oxy-fuel atmosphere Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-16 Qingxiang Wang, Lingfei Liu, Maiwei Chen, Xiao Yang, Junqi Liu, Yaojie Tu, Shilin Wang
Based on the co-combustion principle of coal gangue and biomass, the combustion characteristics, kinetic mechanisms, and pollutant emission characteristics of mixed coal gangue and wheat straw in oxy-fuel atmosphere were investigated by conducting experiments with a thermogravimetric analyzer and a tube furnace in this paper. The results indicated that the comprehensive combustion characteristics,
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Employing RSM to model thermal performance and exergy destruction of LS-3 parabolic trough collector by coupling MCRT and CFD techniques Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-16 Wajdi Rajhi, S.A.M. Mehryan, Nasrin B.M. Elbashir, Hikmet Ş. Aybar, Walid Aich, Aboulbaba Eladeb, Lioua Kolsi
This study investigates the thermal performance and exergy destruction of parabolic trough collector by Response Surface Methodology. This collector is simulated by the Monte Carol Ray Tracing method and the results are coupled to the Computational Fluid Dynamics. Thermo-hydraulic performance and the characteristics of the thermodynamics second law are studied with the turbulence-inducing elements
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Numerical simulations of thermal heat conservation in hybrid nanofluids with chemical reaction, viscous dissipation, and inclination Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-16 J. Manigandan, D. Iranian, Ilyas Khan, Najla A. Mohammed, Hadil Alhazmi
In this work numerical solutions using finite difference method of hybrid nanofluids (TiO–Cu/Water) over an inclined plate are obtained. The nanoparticles are taken of volume fraction of size less than or equal to 0.05. Heat and mass transfers are studied. Chemical reaction and viscous dissipation effect are also examined. The results are computed and plotted for various parameters such as radiation
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The magneto-hydrodynamic motion of casson nano liquid across a porous sheet with frictional heating in Brinkmann-Forcheiemerr media Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-16 S.P. Pallavi, M.B. Veena, Jagadish V. Tawade, Vediyappn Govindan, Choonkil Park, Siriluk Donganont, A. Nagaraj
The present research explains the study of two dimensional Casson nano liquid infinite motion on the linearly elongating porous sheet using Brinkmann-Forcheiemerr porous medium. The study involved mathematical models for the effects of magnetic field, viscous dissipation, heat source/sink for the two-dimensional Casson nano liquid over an elongating porous sheet. Using Similarity transformations, governing
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Heat transfer performance study of fluid rotating microchannel heat sink Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-16 Yu Fan, Chuan Chen, Rong Fu, Qidong Wang, Liqiang Cao, Xinhua Chen, Meiying Su, Yikang Zhou, Weihai Bu, Kai Zheng, Jin Kang
The study presents a novel fluid rotating microchannel heat sink (FR-MC) and reports its heat transfer performance. The FR-MC features two cross ribs positioned in the channel. These cross ribs are inclined in the direction of fluid flow, with each rib inclining in opposite directions. This design enables the fluid to ascend or descend along the ribs, creating rotation after passing through the center
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Influence of variable viscosity and slip on heat and mass transfer of immiscible fluids in a vertical channel Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-16 Vanaja Gosty, G. Srinivas, B. Suresh Babu, B. Shankar Goud, Ahmed S. Hendy, Mohamed R. Ali
This study examines the heat and mass transfer phenomena that take place in a vertical channel containing immiscible fluids, specifically micropolar and viscous fluids. The main objective is to explore the impact of variable viscosity, velocity slip, and other pertinent parameters on various properties, including velocity, angular velocity, temperature, and diffusion. This investigation reveals a significant
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Performance optimization of the transient thermoelectric cooling for the temperature control of the chip working under dynamic power Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-16 Yongjia Wu, Peng Zhang, Sen Chen, Congcong Zhi, Tianhao Shi, Tingrui Gong, Tingzhen Ming
The thermoelectric cooler (TEC) operating under the transient mode showed a stronger short term cooling effect than that of the steady state mode. In this study, a chip cooling experimental setup with the chip modeled by a ceramic heater was constructed using a commercial BiTe-based TEC. A transient three-dimensional numerical model was established for the system optimization. The impacts of the pulse
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Heat transfer due to electromagnetic radiation of MHD Powell-Eyring fluid with mass diffusion via Lie symmetry scaling Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-15 S. Karthik, D. Iranian, Hadil Alhazmi, Ilyas Khan, A. Singh
The objective of this research is to explore the mass and heat transmission characteristics of magnetohydrodynamic Powell-Eyring fluid through an absorptive flat surface, as the effects of mass diffusion and radiation. The validation process involves assessing the accuracy and reliability of the outcomes obtained from solving the ordinary differential equations derived from the governing partial differential
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Comparative analysis of the fire performance of pipe insulations depending on test standards Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-15 Ohk Kun Lim
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Supercritical heat transfer of Novec 649 refrigerant in a minichannel with various inclination angles: Horizontal to vertically downward flows Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-15 Ben-Ran Fu, Chih-Yun Liu
The study of organic fluids under supercritical conditions has been less extensive than that of supercritical carbon dioxide and water. In addition, most studies on supercritical heat transfer have focused on horizontal or vertical channels, with limited research on inclination angles. Therefore, the focus of this study was to investigate the supercritical heat transfer of organic fluid (Novec 649)
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Enhanced heat transfer in vented square enclosures with block structures: Exploring iso-perimetric shapes and multigrid approach for mixed convection of nano-fluids Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-15 Nusrat Rehman, Rashid Mahmood, Afraz Hussain Majeed, Mohamed R. Ali, Ahmed S. Hendy
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Experimental and numerical study on natural gas explosion evolution in open space under different initial conditions Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-15 Shiyu Jia, Mingzhi Li, Zhenyi Liu, Zihao Xiu, Chen Wang, Peng Cai, Kan Wang
The vapor cloud explosion in open space are greatly affected by the initial conditions of gas cloud and the surrounding environment, while in the gas compressor station, these factors are ubiquitous. While the researches of external influencing factors like the obstacle and initial turbulence effect on natural gas explosion in open space are rare. In this paper, a series of natural gas explosion experiments
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Utilization of RSM to optimize the performance and emissions of a single cylinder diesel engine using waste hazelnut biodiesel Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-15 Emre Aytav
One of the environmentally friendly, biodegradable, and renewable alternative fuels widely used around the world is biodiesel. Among vegetable oils, hazelnut oil has great importance in biodiesel production due to its high content of oleic acid. For this study, it is aimed to determine the optimum mixing ratio of biodiesel, produced from waste hazelnut oil (WHB). The tests were carried out on a diesel
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Study on the influence of slope on smoke overflow and temperature characteristics of carriages with lateral openings in subway fires Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-14 Xinyu Wang, Guoqing Zhu, Deqiang Cheng, Guowei Zhang, Lu He, Min Peng, Tong Liu, Rongliang Pan, Yuyang Ming, Fanbao Chen
This research explores the impact of slope on fire hazards in train carriages with multiple lateral openings in underground tunnel fires. Utilizing FDS software, a comprehensive full-scale fire scenario is simulated to study smoke overflow and temperature distribution in inclined tunnels with slopes ranging from 0 % to 4 % and Heat Release Rates (1 MW–10 MW) under natural ventilation. The study reveals
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Influence of air-conditioning intermittent operation on the cooling load from opaque envelopes in residences Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-14 Xi Meng
Air-conditioning (AC) intermittent operation is extensively employed owing to occupancy regulations and residents' habits. This conditioning operation type significantly affects the indoor air temperature as a result of the on-off cycles of AC, leading to potential high temperature differences between adjacent rooms due to varying operation rules. Based on this, numerical simulations were done to deal
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Optimal control of thermoregulation in the human dermal regions investigated through the stochastic integrated techniques Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-14 Iftikhar Ahmad, Syed Ibrar Hussain, Hira Ilyas, Muhammad Asif Zahoor Raja, Sana Afzal, Mariam Javed
In this research, stochastic computing techniques based on artificial neural networks are applied to the proposed singular nonlinear differential equation to explain thermoregulation in the human dermal region problem to investigate and predict the effect of bioheat temperature on human skin at different atmospheric temperatures with different cases with considering the impact of both air convection
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Study on thermal error modeling of high-speed motorized spindle considering bearing inner ring temperature Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-13 Ye Dai, Jian Pang, XuKun Rui, WeiWei Li
In addressing the challenge of unattainable temperature data at critical heat source points in bearings, this study solves for the temperatures of the bearing inner ring and rollers by merging thermal resistance network calculations with experimental data, referencing finite element simulation outcomes. The impact of temperature data from various positions within bearings on model accuracy is assessed
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Evaluation of thermal radiation and Lewis number effects on oscillatory thermal-diffusive instabilities of counterflow premixed flame fed with moisty biomass particles Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-13 Moein Farmahini Farahani, Shahin Akbari, Khashayar Hosseinzadeh
In this study, a thermal-diffusive model using a sinusoidal function for the oscillation term is presented. The model is employed to evaluate the pulsating behavior in a premixed counterflow flame fed with biomass particle cloud considering Lewis number and thermal radiation effects. In order to scrutinize the pulsating characteristics of a flame, time-related governing equations are written for the
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Effect of flame retardant hexafluorocyclotriphosphazene on combustion characteristics of electrolyte for lithium-ion batteries Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-12 Changcheng Liu, Yuliang Zhao, Shibiao Qiao, Kaihui Zheng, Yuhao Wang, Zhihua Sun, Taixin Liang, Chunfang Fan, Tiannian Zhou, Que Huang
Hexafluorocyclotriphosphazene (HFPN) is a promising flame retardant to be applied in lithium-ion batteries (LIBs) to decrease the fire risk during the treatment of electrolyte. In this manuscript, the influence of HFPN on the combustion characteristics of LIB electrolyte was investigated, the combustion behaviors and flame retardancy of the electrolyte with or without HFPN were systematically studied
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Comparative study of nonlinear thermal convection on magnetized dissipative flow along a shrinking Riga sheet with entropy generation Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-12 Palani Sathya, Padigepati Naveen
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Experimental study on the effect of modified heated surfaces on the heat transfer performance of deionized water and ethylene glycol binary mixtures Exp. Heat Transf. (IF 3.5) Pub Date : 2024-04-09 Chen Xu, Wanqing Zhu, Zuo-Qin Qian, Jie Ren
With the development of modern industry, the demand for environmentally friendly working fluids is gradually increasing. Although binary mixtures have low global warming potential, their boiling he...
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An experimental investigation of void fraction characteristics of flow boiling in a 5×5 rod bundle channel Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-10 Sui-Jun Gong, Jing-Liang Bi, Yan-Ping Huang, Wen-Xiong Zhou, De-Wen Yuan, Jian-Jun Xu
Flow boiling in the rod bundle channel is an important phenomenon in nuclear reactors. The local inhomogeneous void fraction distribution in the flow channel will affect the flow and heat transfer in two phase flow. A 5 × 5 rod bundle test section is designed and utilized in the experiments and a conductivity probe is utilized to measure the local void fraction of two phase flow. A remote-control stepping
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Study on the evolution law of physical mechanics and abrasion characteristics of granite under high temperature-water cooling treatment Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-10 Xiangwei Li, Jian Lin, Wanhang Shao, Dongliang Ge, Yun Wu
During deep geothermal resource development, the estimation of drilling efficiency and tool wear in extremely hard rocks relies primarily on CAI testing. However, the degradation of rocks caused by high-temperature water cooling conditions leads to unpredictable changes in CAI. To address this issue, this study conducted P-wave velocity, hardness, thermal conductivity testing, BTS experiments, CAI
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Thermal response of DNAN based explosives considering thermodynamic coupling:Under different charge quantity and diameter changes Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-10 Dihua Ouyang, Chunwei Qin, Xiaowen Qin, Liu Qing, Tao Yu
This paper explores the impact of changes in charge quantity and diameter on the thermal response of DNAN-based explosives. To achieve this, we established a method for simulating thermal, chemical, and mechanical coupling. The study focuses on three fixed charge quantities of explosives, each with varying length-to-diameter ratios, examining alterations in ignition position, timing, and temperature
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Elucidating the effects of surface wettability on boiling heat transfer using hydrophilic and hydrophobic surfaces with laser-etched microchannels Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-10 Domen Žalec, Matic Može, Matevž Zupančič, Iztok Golobič
This study explores the nuanced interplay between surface wettability and morphology in nucleate boiling heat transfer. Surfaces with identical microstructures but varying wettability are created on copper substrates using laser texturing and a hydrophobic agent. The spacing between laser-etched microchannels is adjusted to achieve different contact angles and percentages of laser-textured areas. Boiling
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Optimization of the performance and operation of a photovoltaic-thermoelectric power supply system for bridge safety monitoring microsystems Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-10 Guorui Wei, Tao Lin
In the long-term unattended condition, the continuous operation of bridge safety monitoring micro-system (BSMMS) in mountain areas has the issue of insufficient energy supply. Therefore, a photovoltaic-thermoelectric hybrid power generation system (PV-TEG) is proposed to power the temperature, wind speed, and tilt sensors of BSMMS. The power generation performance and characteristics of PV and TEG
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Analytical modeling of the mixed-mode behavior in functionally graded coating/substrate systems Contin. Mech. Thermodyn. (IF 2.6) Pub Date : 2024-04-08 Rossana Dimitri, Marco Trullo, Martina Rinaldi, Caterina Fai, Francesco Tornabene
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Unraveling metachronal wave effects on heat and mass transfer in Non-Newtonian fluid Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-09 Yuchi Leng, Yijie Li, Haris Anwaar, Sidra Shaheen, Muhammad Bilal Arain, Emad Az-Zo'bi, Ahmed M. Zidan
Non-Newtonian fluids flow generated by “” are critical in medicine and bio-medical engineering. Such investigations are created by the back-and-forth movement of a microscopic hair-like structure connected to the walls, which causes a metachronal wave to form and drive biological fluids. Motivated by a wide range of biological applications, this study aims to explain the incompressible flow of Ellis
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Impact of length and radius of carbon nanotubes on flow and heat transfer in converging and diverging channels with entropy generation Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-04-09 Badreddine Ayadi, Rabia Rehman, Basharat Ullah, Hafiz Abdul Wahab, Umar Khan, Taseer Muhammad, Lioua Kolsi, Nejib Ghazouani
This research examines the complex interplay between the carbon nanotubes' length and radius and how that affects flow patterns, heat transfer properties, and entropy creation in both convergent and divergent channels. Our research elucidates the mechanisms at play by revealing a crucial link between carbon nanotube dimensions and the efficacy of heat transfer processes. In particular, carbon nanotubes