Thermal Science and Engineering Progress最新文献_第7页

Simulation-driven optimization of direct solar dryers for household use: A combined CFD and ANN-GA approach 家用直接太阳能干燥机的仿真驱动优化：CFD和ANN-GA相结合的方法

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-09-18 DOI: 10.1016/j.tsep.2025.104112

Kittipos Loksupapaiboon , Panit Kamma , Juthanee Phromjan , Siwakorn Phakdee , Machimontorn Promtong , Jetsadaporn Priyadumkol , Chakrit Suvanjumrat

{"title":"Simulation-driven optimization of direct solar dryers for household use: A combined CFD and ANN-GA approach","authors":"Kittipos Loksupapaiboon , Panit Kamma , Juthanee Phromjan , Siwakorn Phakdee , Machimontorn Promtong , Jetsadaporn Priyadumkol , Chakrit Suvanjumrat","doi":"10.1016/j.tsep.2025.104112","DOIUrl":"10.1016/j.tsep.2025.104112","url":null,"abstract":"<div><div>This study introduces a novel, integrated optimization framework for domestic solar dryers that uniquely combines computational fluid dynamics (CFD), artificial neural networks (ANN), and genetic algorithms (GA) to achieve superior thermal uniformity and enhanced drying performance. Unlike conventional trial-and-error or replication-based designs—which often result in non-uniform temperature fields and inefficient energy usage—this research systematically addresses heat distribution challenges through a data-driven and simulation-validated approach. CFD simulations, conducted using OpenFOAM and validated via no-load experimental testing, revealed non-uniform drying patterns during initial trials with pineapple slices. These findings informed the development of a machine learning model, where a validated CFD dataset (error <7.33 %) was used to train an ANN-GA system. This hybrid model achieved high predictive accuracy (R<sup>2</sup> = 0.98) with an average error of only 3.87 %, enabling precise prediction and optimization of dryer performance. The optimized configuration delivered an exceptionally uniform temperature distribution (mean 46.15 °C, SD = 0.07 °C), making a significant advancement over conventional designs. The integration of CFD-based physical modeling with AI-driven optimization constitutes a key innovation of this study, offering a replicable and scalable method for the development of high-efficiency domestic solar drying systems.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104112"},"PeriodicalIF":5.4,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Thermal stability of acidified coal under coupled pressure and temperature effects 压力和温度耦合作用下酸化煤的热稳定性

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-09-18 DOI: 10.1016/j.tsep.2025.104124

Shaochuan Chen , Chengwu Li , Yun Lei , Fuchao Tian

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Numerical study on the melting performance of a diverging-converging shell and tube latent heat storage system 发散-收敛壳管潜热蓄热系统熔化性能的数值研究

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-09-18 DOI: 10.1016/j.tsep.2025.104118

Aditya Kumar Jatav, K.S. Reddy

{"title":"Numerical study on the melting performance of a diverging-converging shell and tube latent heat storage system","authors":"Aditya Kumar Jatav, K.S. Reddy","doi":"10.1016/j.tsep.2025.104118","DOIUrl":"10.1016/j.tsep.2025.104118","url":null,"abstract":"<div><div>A shell and tube latent heat thermal energy storage (ST-LHTES) system is being considered for integration into a concentrated solar power plant. In this regard, the geometry of the shell surface significantly influences the thermal performance of such systems. While cylindrical, conical, and eccentric configurations have been widely studied, the effect of diverging–converging shells has not been systematically explored. The present study proposes a novel diverging–converging ST-LHTES system and investigates the charging performance through a three-dimensional enthalpy–porosity model. The <em>H/w</em> (height-to-sectional length) ratio in the proposed vertical configurations varies from 3 to 6 while maintaining a constant convergence angle (<em>θ</em>). The results indicate that an <em>H/w</em> ratio of 4 delivers the best thermal performance. Specifically, the PCM charging time for an <em>H/w</em> ratio of 4 is reduced by 5.56 %, 11.12 %, and 13.89 % compared to <em>H/w</em> ratios of 3, 5, and 6, respectively. Additionally, the best-performing design configuration (<em>H/w</em> = 4) is evaluated under different inclination angles (φ), eccentricities (ε), and Reynolds numbers (<em>Re</em>). The horizontal system (0°) decreases melting time by 3.12 %, 9.37 %, and 12.50 % compared to the 30°, 60°, and 90° configurations. The eccentricity analysis of the horizontal configuration indicates that increasing eccentricity enhances the melting rate by enlarging the upper region of the shell, thereby promoting natural convection. Furthermore, higher Reynolds numbers improve heat transfer, resulting in a faster melting rate.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104118"},"PeriodicalIF":5.4,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Retraction notice to the articles published in the Special Issue “Thermal modeling and thermal effects in biological systems for tissue engineering and regenerative medicine” 《组织工程和再生医学中生物系统的热建模和热效应》特刊发表文章的撤回通知

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-09-17 DOI: 10.1016/j.tsep.2025.103960

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Threshold temperature pyrolysis of waste plastic and the effect on pyrolysis energy consumption and product distribution 废塑料的阈值温度热解及其对热解能耗和产物分布的影响

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-09-17 DOI: 10.1016/j.tsep.2025.104105

Yong Li , Weixuan Wang , Fengfu Yin , Kong shuo Wang

{"title":"Threshold temperature pyrolysis of waste plastic and the effect on pyrolysis energy consumption and product distribution","authors":"Yong Li , Weixuan Wang , Fengfu Yin , Kong shuo Wang","doi":"10.1016/j.tsep.2025.104105","DOIUrl":"10.1016/j.tsep.2025.104105","url":null,"abstract":"<div><div>Pyrolysis technology, as a key method of waste resource utilization, its pyrolysis efficiency directly affects the feasibility of circular economy. However, conventional pyrolysis processes often rely on higher pyrolysis temperatures, which not only increase energy consumption but also lead to a more complex distribution of pyrolysis products. Therefore, developing a pyrolysis process that is low in energy consumption and high in added value is particularly important. This paper uses polyethylene, the plastic with the largest global production, as the experimental material, and systematically analyzes the evolution of multidimensional parameters (pyrolysis characteristics, pyrolysis function models, apparent activation energy, and conversion rate) during its pyrolysis process. Based on the evolution of the multidimensional parameters, the “threshold temperature pyrolysis process” for polyethylene was developed, and its feasibility was verified through experiments and ANSYS Workbench simulation. The research results indicate that the threshold temperature pyrolysis process has a lower pyrolysis temperature and forms a stable thermal field distribution during the isothermal stage. This stable thermal field distribution not only reduced energy consumption by 6.1 % through regulating the reaction pathways of free radicals, but also increased the pyrolysis oil yield by 11.5 %. Furthermore, the lower pyrolysis temperature and stable thermal field distribution under the threshold temperature pyrolysis process regulate the migration of pyrolysis oil components towards lighter fractions by slowing down the reaction rate and extending the residence time of long-chain hydrocarbons. The above studies also provide quantifiable theoretical basis and methodological support for the high value utilization of other waste materials.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104105"},"PeriodicalIF":5.4,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Experimental study on the influence of delayed explosion characteristics of dusty methane 含尘甲烷延迟爆炸特性影响的实验研究

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-09-17 DOI: 10.1016/j.tsep.2025.104120

Haixia Zhang , Qingcheng Zhang , Tao Cui , Zhuowen Cai , Jingde Xu , Zhie Wang

{"title":"Experimental study on the influence of delayed explosion characteristics of dusty methane","authors":"Haixia Zhang , Qingcheng Zhang , Tao Cui , Zhuowen Cai , Jingde Xu , Zhie Wang","doi":"10.1016/j.tsep.2025.104120","DOIUrl":"10.1016/j.tsep.2025.104120","url":null,"abstract":"<div><div>To systematically investigate the impact of varying concentrations of coal dust on the characteristics of methane explosions under the influence of ignition delay, a 60 L spherical chamber was used to simulate an underground coal chamber environment. The laser schlieren technique was employed to observe the micro-flow field of deflagration, and the flame front was processed using MATLAB, which enabled the analysis of the evolution process of the development morphology of the flame structure. A series of mixed explosion experiments were conducted under conditions of varying coal dust concentrations (0 g/m<sup>3</sup>, 10 g/m<sup>3</sup>, 20 g/m<sup>3</sup>, and 30 g/m<sup>3</sup>) and ignition delay times (30 ms, 60 ms and 90 ms, respectively). These findings suggest that the introduction of an ignition delay leads to a decrease in the initial peak pressure (P<sub>max</sub>) of methane-air explosions, followed by an increase in the maximum pressure rise rate (dP/dt)<sub>max</sub> and the explosion severity index (K<sub>st</sub>). It is evident that delayed ignition exacerbates flame instability, with turbulence accelerating flame propagation while reducing pressure. The maximum explosion pressure (P<sub>max</sub>) was found to decrease by 6.24 %, whilst the maximum pressure rise rate (dP/dt)<sub>max</sub> increased by 82.48 %. In conditions of reduced ignition delays, an increase in dust concentration results in a decrease in P<sub>max</sub> and an increase in both (dP/dt)<sub>max</sub> and K<sub>st</sub>. As the ignition delay time and dust concentration increase, the explosion pressure (P<sub>max</sub>) increases dramatically at 30 g/m<sup>3</sup>, with (dP/dt)<sub>max</sub> and K<sub>st</sub> also increasing. The findings offer a valuable contribution to the field of dusty methane explosion, which provides insights that can be used to prevent and manage coal mine catastrophes.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104120"},"PeriodicalIF":5.4,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Entropy generation minimization in multi-tube evaporators under constant volume conditions using R32 refrigerant via a hybrid genetic and gradient-based optimization approach 基于遗传和梯度混合优化方法的R32制冷剂恒容条件下多管蒸发器熵产最小化

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-09-17 DOI: 10.1016/j.tsep.2025.104107

Bhaskar Halder , Md Naim Hossain , Anish Pal , Koushik Ghosh

{"title":"Entropy generation minimization in multi-tube evaporators under constant volume conditions using R32 refrigerant via a hybrid genetic and gradient-based optimization approach","authors":"Bhaskar Halder , Md Naim Hossain , Anish Pal , Koushik Ghosh","doi":"10.1016/j.tsep.2025.104107","DOIUrl":"10.1016/j.tsep.2025.104107","url":null,"abstract":"<div><div>This study presents a comprehensive analysis of entropy generation in a multi-tube evaporator system under constrained volume conditions. A multiphase entropy generation model, based on the drift flux approach, was developed to account for pressure drop and heat transfer characteristics, and validated against experimental data. The influence of tube diameter, number of tubes, heat flux, and system volume on total entropy generation was systematically investigated. The existence of an Entropy Generation Minimization (EGM) point was observed, governed by the competing effects of pressure drop and heat transfer. It was found that increasing tube diameter shifts the EGM point to lower mass flux, while increasing the number of tubes or heat flux shifts it to higher mass flux. Higher volume also resulted in a shift of the EGM point towards lower mass flux. A detailed critical mass flux (<em>G<sub>crit</sub></em>) map, representing the mass flux at the EGM point, was developed across a broad range of design parameters. Optimization was carried out using a hybrid approach combining Genetic Algorithm and gradient-based refinement (fmincon). The optimal configuration achieved a minimum entropy generation of 0.02605 W/K, with a tube diameter of 21.34 mm, volume of 0.00104 m<sup>3</sup>, number of tubes 6, heat flux 5.048 kW/m<sup>2</sup>, and mass flux 280 kg/m<sup>2</sup>·s.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104107"},"PeriodicalIF":5.4,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Experimental study on alternating electromagnetic field effect on enhanced heat transfer and the flow analysis of nanofluid 交变电磁场对纳米流体强化传热影响的实验研究及流动分析

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-09-17 DOI: 10.1016/j.tsep.2025.104116

Nipon Boonkumkrong , Anumut Siricharoenpanich

{"title":"Experimental study on alternating electromagnetic field effect on enhanced heat transfer and the flow analysis of nanofluid","authors":"Nipon Boonkumkrong , Anumut Siricharoenpanich","doi":"10.1016/j.tsep.2025.104116","DOIUrl":"10.1016/j.tsep.2025.104116","url":null,"abstract":"<div><div>The flow characteristics of Fe<sub>3</sub>O<sub>4</sub> nanofluids under alternating electromagnetic fields were examined. Trials involved nanofluids with Reynolds numbers ranging from 5000 to 15,000 and concentrations between 0.5 vol% and 1.5 vol%. Experiments were conducted both with and without electromagnetic fields. The magnetic field of an alternating electromagnetic field enhances the heat transfer coefficient compared to non-electromagnetic cases. This improvement is due to disturbance in the boundary layer and greater local convective heat transfer. Consequently, a high Reynolds number is achieved, though it is reduced at lower Re. Regardless of magnetic field presence, increasing nanoparticle volume fraction improves heat transfer. Higher alternating frequency also enhances heat transfer, though the effect of frequency itself is minimal. A quadratic relationship is observed between magnetic field strength, volume fraction, and heat transfer efficiency. Higher volume fractions and frequencies increase pressure drop and friction factor. Initially, increased frequency and Reynolds number enhance heat transfer, but performance later declines. Magnetic nanoparticles tend to accumulate at the boundary layer, aiding heat transmission and reducing eddy currents. An evaluation index was used to assess overall heat transfer activity. This index rises with increasing Reynolds number and frequency at first but later falls as Reynolds number continues to rise.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104116"},"PeriodicalIF":5.4,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of a novel environmentally friendly cascade combined cooling and power system integrated with LNG regasification and desalination unit 结合LNG再气化和海水淡化装置的新型环保型梯级联合冷却和电力系统的评估

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-09-17 DOI: 10.1016/j.tsep.2025.104113

Ch. Hsu , Ali Basem , L. Thanh Le , Pradeep Kumar Singh , M. Ali Rusho , B. Abdullaeva , A.M.A. Mohamed , Masoud Alajmi , A. Smerat , J. Khan Bhutto , S. Islam

{"title":"Evaluation of a novel environmentally friendly cascade combined cooling and power system integrated with LNG regasification and desalination unit","authors":"Ch. Hsu , Ali Basem , L. Thanh Le , Pradeep Kumar Singh , M. Ali Rusho , B. Abdullaeva , A.M.A. Mohamed , Masoud Alajmi , A. Smerat , J. Khan Bhutto , S. Islam","doi":"10.1016/j.tsep.2025.104113","DOIUrl":"10.1016/j.tsep.2025.104113","url":null,"abstract":"<div><div>In this study, a comprehensive thermo-economic performance analysis is conducted on a newly developed cascade combined cooling and power system that utilizes the cold energy of liquefied natural gas, integrated with seawater desalination. The proposed system generates electricity through a gas turbine cycle, an organic Rankine cycle equipped with a recuperator, and a power generation unit using LNG as the working fluid. Additionally, gas expansion within the turbine, combined with the integration of an evaporator, yields a cooling output of 943.1 kW. The system demonstrates an energy efficiency of 72.97 %, an exergy efficiency of 48.79 %, total exergy destruction of 3694 kW, a total cost rate of $4569.04/h, and a unit exergy cost of $201.4/GJ. For single-generation and combined cooling and power modes, the energy efficiencies are evaluated at 48.36 % and 55.84 %, respectively. Second-law analysis reveals that the gas turbine and fuel burner are responsible for the highest exergy destruction, contributing 74 % and 54.3 % of the total, respectively. To mitigate system irreversibilities, three key parameters were examined: combustion air flow rate, air temperature before the gas turbine, and the working fluid pressure in the ORC. The analysis indicates that increasing the combustion air temperature to 1000 °C enhances energy efficiency to 76.6 %, exergy efficiency to 53 %, and gas turbine power output to 7581 kW. Moreover, increasing the combustion air flow rate to 12 kg/s results in an improvement in energy efficiency to 77 %, an increase in exergy efficiency to 52 %, and a reduction in the unit exergy cost to $189.13/GJ.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104113"},"PeriodicalIF":5.4,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Joule heating of carbon fiber in hybrid composites with glass fibers: Investigation of electro-thermal and vibration characteristics 碳纤维与玻璃纤维混合复合材料的焦耳加热：电热和振动特性的研究

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-09-16 DOI: 10.1016/j.tsep.2025.104111

Emin Uslu, Galip Yilmaz, Mehmet Uyar

{"title":"Joule heating of carbon fiber in hybrid composites with glass fibers: Investigation of electro-thermal and vibration characteristics","authors":"Emin Uslu, Galip Yilmaz, Mehmet Uyar","doi":"10.1016/j.tsep.2025.104111","DOIUrl":"10.1016/j.tsep.2025.104111","url":null,"abstract":"<div><div>This study explores the innovative dual-purpose use of carbon fiber, functioning both as a structural and a heating element, expanding its potential in hybrid composites. A prototype composite was fabricated using the vacuum infusion process, featuring a single carbon fiber layer at the core for dual-purpose and two outer layers of glass fiber. Electrical heating tests revealed a stable relationship between voltage, resistance, power, and temperature, demonstrating efficient heat generation as the voltage increased. Thermal imaging confirmed uniform heat distribution with minor variations. Free vibration tests evaluated the composite’s dynamic behavior under various electro-thermal conditions. Results showed that increasing temperature reduced the natural frequencies, particularly in the second vibration mode. Changes in Rayleigh damping coefficients at higher temperatures highlighted the composite’s sensitivity to thermal inputs. These findings underline the potential of hybrid composites for advanced applications like turbine blades and aerospace components, where multifunctionality, self-heating, and vibration control are critical.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104111"},"PeriodicalIF":5.4,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0