Thermal Science and Engineering Progress最新文献_第8页

Research on urban green environment and landscape design based on thermal energy cycle simulation and thermal image analysis

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress

Pub Date : 2025-01-27 DOI: 10.1016/j.tsep.2025.103316

Pan Yanjie , Zhang Yan , Lv Zepeng , Zhou Chenxiao

This study aims to explore effective strategies for urban green environment and landscape design based on thermal energy cycle simulation and thermal image analysis, in order to improve the thermal comfort and ecological sustainability of cities. This article reviews relevant research and points out the urban heat island effect and its negative impact on the living environment. By simulating the thermal energy cycle, the thermal relief index was calculated and the comfort level under different environmental conditions was evaluated, providing a theoretical basis for subsequent analysis. In the analysis of urban green environment thermal images, this study constructed thermal images and analyzed the impact of different landscape elements on urban thermal environment through weight calculation. Using thermal images, we delved into the spatial distribution characteristics of urban thermal environment and its relationship with urban design, revealing the importance of landscape design in improving urban thermal environment. Finally, based on the analysis of urban landscape pattern and the coordination of thermal environment, this article proposes a series of optimization strategies aimed at reducing urban thermal load and enhancing urban ecological functions through scientific landscape design. By integrating the methods of thermal energy cycle and landscape design, this study provides feasible suggestions for future urban green environment design and emphasizes the importance of thermal science in urban planning.

{"title":"Research on urban green environment and landscape design based on thermal energy cycle simulation and thermal image analysis","authors":"Pan Yanjie , Zhang Yan , Lv Zepeng , Zhou Chenxiao","doi":"10.1016/j.tsep.2025.103316","DOIUrl":"10.1016/j.tsep.2025.103316","url":null,"abstract":"<div><div>This study aims to explore effective strategies for urban green environment and landscape design based on thermal energy cycle simulation and thermal image analysis, in order to improve the thermal comfort and ecological sustainability of cities. This article reviews relevant research and points out the urban heat island effect and its negative impact on the living environment. By simulating the thermal energy cycle, the thermal relief index was calculated and the comfort level under different environmental conditions was evaluated, providing a theoretical basis for subsequent analysis. In the analysis of urban green environment thermal images, this study constructed thermal images and analyzed the impact of different landscape elements on urban thermal environment through weight calculation. Using thermal images, we delved into the spatial distribution characteristics of urban thermal environment and its relationship with urban design, revealing the importance of landscape design in improving urban thermal environment. Finally, based on the analysis of urban landscape pattern and the coordination of thermal environment, this article proposes a series of optimization strategies aimed at reducing urban thermal load and enhancing urban ecological functions through scientific landscape design. By integrating the methods of thermal energy cycle and landscape design, this study provides feasible suggestions for future urban green environment design and emphasizes the importance of thermal science in urban planning.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"59 ","pages":"Article 103316"},"PeriodicalIF":5.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143155612","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

Application of environmental thermal energy simulation and audio image processing in film and television animation sound design

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress

Pub Date : 2025-01-27 DOI: 10.1016/j.tsep.2025.103317

Zhang Jinjin

In modern film and television animation production, sound design is a key link to create a sense of realism and immersion. With the development of technology, traditional sound design methods have been unable to fully meet the growing needs of audiences. In this paper, the environmental thermal energy simulation technology is combined with audio image processing technology, and the thermal energy model is established by collecting temperature data in different environments. Then the thermal energy simulation software is used to simulate the influence of temperature change on sound propagation, including attenuation, reflection and refraction of sound. Simulation results are applied to sound design to create sound effects that match the characteristics of a particular environment. By analyzing the visual elements in the animation, the image features related to sound are extracted. Using the audio image processing algorithm, these features are matched and synchronized with the sound signal to ensure the perfect combination of sound effect and picture. Machine learning technology is also applied to train a large amount of audio and video data to improve the accuracy and efficiency of sound and image synchronization processing. The results show that the sound effect is more realistic: the environmental thermal energy simulation technology can accurately simulate the propagation characteristics of sound in different temperature environments, making the sound effect more real and dynamic. By automatically analyzing and processing large amounts of audio and video data, sound designers can quickly find the best sound effects, shorten design cycles and reduce production costs.

{"title":"Application of environmental thermal energy simulation and audio image processing in film and television animation sound design","authors":"Zhang Jinjin","doi":"10.1016/j.tsep.2025.103317","DOIUrl":"10.1016/j.tsep.2025.103317","url":null,"abstract":"<div><div>In modern film and television animation production, sound design is a key link to create a sense of realism and immersion. With the development of technology, traditional sound design methods have been unable to fully meet the growing needs of audiences. In this paper, the environmental thermal energy simulation technology is combined with audio image processing technology, and the thermal energy model is established by collecting temperature data in different environments. Then the thermal energy simulation software is used to simulate the influence of temperature change on sound propagation, including attenuation, reflection and refraction of sound. Simulation results are applied to sound design to create sound effects that match the characteristics of a particular environment. By analyzing the visual elements in the animation, the image features related to sound are extracted. Using the audio image processing algorithm, these features are matched and synchronized with the sound signal to ensure the perfect combination of sound effect and picture. Machine learning technology is also applied to train a large amount of audio and video data to improve the accuracy and efficiency of sound and image synchronization processing. The results show that the sound effect is more realistic: the environmental thermal energy simulation technology can accurately simulate the propagation characteristics of sound in different temperature environments, making the sound effect more real and dynamic. By automatically analyzing and processing large amounts of audio and video data, sound designers can quickly find the best sound effects, shorten design cycles and reduce production costs.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"59 ","pages":"Article 103317"},"PeriodicalIF":5.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143155617","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

Effects of hydrophilic-hydrophobic ratios on single-phase forced convection performances with macroscopic hydrophilic-hydrophobic hybrid surfaces

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress

Pub Date : 2025-01-27 DOI: 10.1016/j.tsep.2025.103319

Haotian Cong , Minli Bai , Xuecheng Lv , Linsong Gao , Peiying Hu , Yubai Li , Yongchen Song

Flow drag and heat transfer are important performance metrics in heat exchanger applications, which have profound significance for improving energy utilization efficiency. Hydrophobic surfaces can reduce flow drag but weaken heat transfer due to air cavity thermal resistances. Moreover, existing microscopic hydrophilic-hydrophobic hybrid surfaces have application limitations due to scale effects. In this study, six macroscopic hydrophilic-hydrophobic hybrid surfaces with different hydrophilic-hydrophobic ratios are designed to harmonize flow and heat transfer performances. Based on simplifying the macroscopic hybrid surface model to a single-phase flow model using the flow and experimentally obtained thermal boundary conditions, the performances and influencing mechanisms under different hydrophilic-hydrophobic ratios are investigated using COMSOL software. The results show that hybrid surfaces with hydrophobic substrate have a higher drag reduction rate of up to 27.97% due to the increasing hydrophobic proportion. Conversely, hybrid surfaces with hydrophilic substrate can obtain a higher Nusselt number, with an attenuation rate of less than 10%, which can maintain the heat transfer performance. Hydrophilic substrate hybrid surfaces’ efficiency evaluation criteria are all larger than 1. Among them, the hybrid surface with the hydrophilic-hydrophobic ratio 1:1 has a maximum enhancement rate of 14.76%, effectively harmonizing the flow and heat transfer performances. Through the performance and eddy analyses, the disturbance caused by the backflows and eddies on the hydrophilic/hydrophobic interfaces is also one of the factors influencing performances, except for the hydrophobic proportion. This study is of great significance for designing macroscopic hydrophilic-hydrophobic hybrid surfaces and improving the comprehensive efficiency of heat exchanger equipment.

{"title":"Effects of hydrophilic-hydrophobic ratios on single-phase forced convection performances with macroscopic hydrophilic-hydrophobic hybrid surfaces","authors":"Haotian Cong , Minli Bai , Xuecheng Lv , Linsong Gao , Peiying Hu , Yubai Li , Yongchen Song","doi":"10.1016/j.tsep.2025.103319","DOIUrl":"10.1016/j.tsep.2025.103319","url":null,"abstract":"<div><div>Flow drag and heat transfer are important performance metrics in heat exchanger applications, which have profound significance for improving energy utilization efficiency. Hydrophobic surfaces can reduce flow drag but weaken heat transfer due to air cavity thermal resistances. Moreover, existing microscopic hydrophilic-hydrophobic hybrid surfaces have application limitations due to scale effects. In this study, six macroscopic hydrophilic-hydrophobic hybrid surfaces with different hydrophilic-hydrophobic ratios are designed to harmonize flow and heat transfer performances. Based on simplifying the macroscopic hybrid surface model to a single-phase flow model using the flow and experimentally obtained thermal boundary conditions, the performances and influencing mechanisms under different hydrophilic-hydrophobic ratios are investigated using COMSOL software. The results show that hybrid surfaces with hydrophobic substrate have a higher drag reduction rate of up to 27.97% due to the increasing hydrophobic proportion. Conversely, hybrid surfaces with hydrophilic substrate can obtain a higher Nusselt number, with an attenuation rate of less than 10%, which can maintain the heat transfer performance. Hydrophilic substrate hybrid surfaces’ efficiency evaluation criteria are all larger than 1. Among them, the hybrid surface with the hydrophilic-hydrophobic ratio 1:1 has a maximum enhancement rate of 14.76%, effectively harmonizing the flow and heat transfer performances. Through the performance and eddy analyses, the disturbance caused by the backflows and eddies on the hydrophilic/hydrophobic interfaces is also one of the factors influencing performances, except for the hydrophobic proportion. This study is of great significance for designing macroscopic hydrophilic-hydrophobic hybrid surfaces and improving the comprehensive efficiency of heat exchanger equipment.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"59 ","pages":"Article 103319"},"PeriodicalIF":5.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143155630","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

Thermal radiation image detection and optical motion capture in athlete physical health monitoring system simulation: Tissue thermal effects

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress

Pub Date : 2025-01-27 DOI: 10.1016/j.tsep.2025.103310

Wanxin Du , Hui Wang , Fanfeng Meng

In the field of modern sports science, accurate monitoring of athletes’ physical fitness and health status is an important means to improve sports performance and prevent sports injuries. In this paper, an athlete physical health monitoring system combining thermal radiation image detection and optical motion capture technology is designed, and the effectiveness of the system is verified by simulation experiments. A monitoring system integrating thermal radiation image detection and optical motion capture technology is designed and built, including high sensitivity thermal camera, multiple optical capture cameras and corresponding data processing software. A group of representative athletes were selected as the research objects. The thermal camera captured the thermal radiation image of the athletes’ body surface in real time, while the optical capture system recorded the athletes’ movement track and posture. Then the thermal radiation images and motion data collected were analyzed by data processing software, and the surface temperature changes and motion parameters were extracted. Finally, statistical methods are used to process the experimental data to reveal the relationship between tissue thermal effect and motion heat transfer. The experimental results show that there are significant differences in body surface temperature distribution and change patterns when athletes perform different intensity and types of exercise. Through the thermal radiation image detection technology, the muscle region temperature of athletes increased significantly after high-intensity exercise, but gradually decreased during the recovery period. Optical motion capture technology provides accurate motion parameters, such as joint Angle, velocity and acceleration, which are combined with thermal radiation image data to reveal the dynamic change of tissue thermal effect during motion.

{"title":"Thermal radiation image detection and optical motion capture in athlete physical health monitoring system simulation: Tissue thermal effects","authors":"Wanxin Du , Hui Wang , Fanfeng Meng","doi":"10.1016/j.tsep.2025.103310","DOIUrl":"10.1016/j.tsep.2025.103310","url":null,"abstract":"<div><div>In the field of modern sports science, accurate monitoring of athletes’ physical fitness and health status is an important means to improve sports performance and prevent sports injuries. In this paper, an athlete physical health monitoring system combining thermal radiation image detection and optical motion capture technology is designed, and the effectiveness of the system is verified by simulation experiments. A monitoring system integrating thermal radiation image detection and optical motion capture technology is designed and built, including high sensitivity thermal camera, multiple optical capture cameras and corresponding data processing software. A group of representative athletes were selected as the research objects. The thermal camera captured the thermal radiation image of the athletes’ body surface in real time, while the optical capture system recorded the athletes’ movement track and posture. Then the thermal radiation images and motion data collected were analyzed by data processing software, and the surface temperature changes and motion parameters were extracted. Finally, statistical methods are used to process the experimental data to reveal the relationship between tissue thermal effect and motion heat transfer. The experimental results show that there are significant differences in body surface temperature distribution and change patterns when athletes perform different intensity and types of exercise. Through the thermal radiation image detection technology, the muscle region temperature of athletes increased significantly after high-intensity exercise, but gradually decreased during the recovery period. Optical motion capture technology provides accurate motion parameters, such as joint Angle, velocity and acceleration, which are combined with thermal radiation image data to reveal the dynamic change of tissue thermal effect during motion.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"59 ","pages":"Article 103310"},"PeriodicalIF":5.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156388","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

A novel evaluation method for thermal stability of erythritol as phase change materials

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress

Pub Date : 2025-01-27 DOI: 10.1016/j.tsep.2025.103303

Kuerbanjiang Wusiman , Tianhao Wang , Lin Shi , Xiaoye Dai

Phase change materials (PCMs) are highly valued due to their high energy storage density while maintaining approximately constant temperature conditions. Sugar alcohols are regarded as potential PCMs in the temperature range of 100 to 250 °C. However, the melting enthalpy of sugar alcohols tends to decay during heating process, which affects their thermal storage performance. Different testing methods and experimental settings can affect the melting enthalpy decay of sugar alcohols, resulting in inconsistent evaluation results of thermal stability. Therefore, the influence factors on the melting enthalpy decay of erythritol during tests of constant temperature thermal stability and cycling stability were explored, and the heat release characteristics were also evalutaed in this study. The results showed the thermal stability of erythritol was significantly impacted by the presence of oxygen when heated in an air atmosphere. The sample size factor, in terms of the specific surface area of the sample had little effect on the melting enthalpy decay in the oxygen-free condition. The number of cycles had a minimal influence on the decay of melting enthalpy during cycling stability tests for erythritol when the cooling rate was relatively low (3.1 ℃/min). However, a high cooling rate (10 ℃/min) was likely to facilitate polymorphic transitions throughout the cycling process and led to significant melting enthalpy decay with the number of cycles. A method for evaluating cycling stability was established and a mobilized thermal energy storage (M-TES) system using erythritol PCMs was analyzed as a case. The assessed service life of M-TES system was closely related to the degree of superheat and heat storage duration of cycling. A quantitative relationship model was established for the impact of degree of supercooling on the heat release ratio. Based on the evaluation of the heat release ratio model, erythritol PCM demonstrates high heat release efficiency in practical applications.

{"title":"A novel evaluation method for thermal stability of erythritol as phase change materials","authors":"Kuerbanjiang Wusiman , Tianhao Wang , Lin Shi , Xiaoye Dai","doi":"10.1016/j.tsep.2025.103303","DOIUrl":"10.1016/j.tsep.2025.103303","url":null,"abstract":"<div><div>Phase change materials (PCMs) are highly valued due to their high energy storage density while maintaining approximately constant temperature conditions. Sugar alcohols are regarded as potential PCMs in the temperature range of 100 to 250 °C. However, the melting enthalpy of sugar alcohols tends to decay during heating process, which affects their thermal storage performance. Different testing methods and experimental settings can affect the melting enthalpy decay of sugar alcohols, resulting in inconsistent evaluation results of thermal stability. Therefore, the influence factors on the melting enthalpy decay of erythritol during tests of constant temperature thermal stability and cycling stability were explored, and the heat release characteristics were also evalutaed in this study. The results showed the thermal stability of erythritol was significantly impacted by the presence of oxygen when heated in an air atmosphere. The sample size factor, in terms of the specific surface area of the sample had little effect on the melting enthalpy decay in the oxygen-free condition. The number of cycles had a minimal influence on the decay of melting enthalpy during cycling stability tests for erythritol when the cooling rate was relatively low (3.1 ℃/min). However, a high cooling rate (10 ℃/min) was likely to facilitate polymorphic transitions throughout the cycling process and led to significant melting enthalpy decay with the number of cycles. A method for evaluating cycling stability was established and a mobilized thermal energy storage (M-TES) system using erythritol PCMs was analyzed as a case. The assessed service life of M-TES system was closely related to the degree of superheat and heat storage duration of cycling. A quantitative relationship model was established for the impact of degree of supercooling on the heat release ratio. Based on the evaluation of the heat release ratio model, erythritol PCM demonstrates high heat release efficiency in practical applications.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"59 ","pages":"Article 103303"},"PeriodicalIF":5.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156993","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

Thermal barrier coatings in compression ignition engines: Analysis of combustion strategies and insights into convection vive

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress

Pub Date : 2025-01-27 DOI: 10.1016/j.tsep.2025.103320

Brian Gainey, Benjamin Lawler

Thermal barrier coatings (TBCs) show promise to improve engine efficiency by reducing convection heat transfer losses through elevated surface temperatures. However, in mixing controlled combustion systems, experiments with TBCs often fail to produce efficiency benefits. It was previously hypothesized that this is due to high local heat fluxes from impinging jets causing local surface temperatures to become excessively high, enabling convection vive: exothermic reactions in the thermal boundary layer that increase the convection heat transfer coefficient. In this work, experiments were conducted with a low thermal effusivity TBC operating in either kinetically controlled combustion or mixing controlled combustion with ethanol. The results showed that at loads of 3, 6, and 10 bar IMEPg, the TBC provided an efficiency benefit of up to ∼1 percentage points (pp) in both combustion strategies. At 15 bar IMEPg, only the kinetically controlled combustion strategy showed an efficiency benefit of 0.3pp. The mixing controlled combustion strategy showed an efficiency penalty of 0.2pp with the TBC despite having roughly equivalent closed cycle heat transfer as an uncoated piston. Combined with an increased exhaust temperature, this was attributed to the following phenomenon: convection vive occurs durng the heat release process, increasing heat transfer. Following combustion, elevated surface temperatures reduce heat transfer losses. The total heat transfer is the same, but the change in heat transfer phasing reduces thermodynamic efficiency and results in higher exhaust losses. These results highlight that convection vive is a limiting factor for mixing controlled combustion systems with TBCs; their design should take place with convection vive in mind.

{"title":"Thermal barrier coatings in compression ignition engines: Analysis of combustion strategies and insights into convection vive","authors":"Brian Gainey, Benjamin Lawler","doi":"10.1016/j.tsep.2025.103320","DOIUrl":"10.1016/j.tsep.2025.103320","url":null,"abstract":"<div><div>Thermal barrier coatings (TBCs) show promise to improve engine efficiency by reducing convection heat transfer losses through elevated surface temperatures. However, in mixing controlled combustion systems, experiments with TBCs often fail to produce efficiency benefits. It was previously hypothesized that this is due to high local heat fluxes from impinging jets causing local surface temperatures to become excessively high, enabling convection vive: exothermic reactions in the thermal boundary layer that increase the convection heat transfer coefficient. In this work, experiments were conducted with a low thermal effusivity TBC operating in either kinetically controlled combustion or mixing controlled combustion with ethanol. The results showed that at loads of 3, 6, and 10 bar IMEPg, the TBC provided an efficiency benefit of up to ∼1 percentage points (pp) in both combustion strategies. At 15 bar IMEPg, only the kinetically controlled combustion strategy showed an efficiency benefit of 0.3pp. The mixing controlled combustion strategy showed an efficiency penalty of 0.2pp with the TBC despite having roughly equivalent closed cycle heat transfer as an uncoated piston. Combined with an increased exhaust temperature, this was attributed to the following phenomenon: convection vive occurs durng the heat release process, increasing heat transfer. Following combustion, elevated surface temperatures reduce heat transfer losses. The total heat transfer is the same, but the change in heat transfer phasing reduces thermodynamic efficiency and results in higher exhaust losses. These results highlight that convection vive is a limiting factor for mixing controlled combustion systems with TBCs; their design should take place with convection vive in mind.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"59 ","pages":"Article 103320"},"PeriodicalIF":5.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157006","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

Research on the impact of intelligent thermal management system on the cost efficiency of hybrid manufacturing enterprises

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress

Pub Date : 2025-01-27 DOI: 10.1016/j.tsep.2025.103314

Shangyan Xiong , Xingxing Xu

With the transformation of manufacturing towards intelligence, the importance of thermal management systems in improving production efficiency and reducing costs is becoming increasingly prominent. The study reviewed the existing research results and pointed out the shortcomings of the application of existing thermal management systems in hybrid manufacturing enterprises. On this basis, an intelligent thermal management system was designed, including modules such as heat generation model, cooling model, temperature prediction, and thermal management effect evaluation. The heat generation model simulates the distribution of heat sources during the production process, while the cooling model evaluates the effectiveness of different cooling strategies. The temperature prediction model combined with machine learning algorithms has improved the accuracy of temperature prediction, ultimately achieving quantitative evaluation of thermal management effectiveness. This article uses quantitative methods to analyze the cost-effectiveness of mixed manufacturing enterprises, with a focus on their production characteristics, quality benefits, and manufacturing unit design. Research has shown that reasonable thermal management can not only effectively reduce energy consumption, but also bring significant improvements in quality management, thereby supporting enterprises to implement more comprehensive cost-benefit control. Research has proposed optimization capability evaluation indicators and specific application strategies for cost-effectiveness optimization strategies in mixed manufacturing enterprises. Through the analysis of practical cases, the results show that after implementing the intelligent thermal management system, the overall production efficiency and economic benefits of the enterprise have significantly improved, providing useful practical guidance.

{"title":"Research on the impact of intelligent thermal management system on the cost efficiency of hybrid manufacturing enterprises","authors":"Shangyan Xiong , Xingxing Xu","doi":"10.1016/j.tsep.2025.103314","DOIUrl":"10.1016/j.tsep.2025.103314","url":null,"abstract":"<div><div>With the transformation of manufacturing towards intelligence, the importance of thermal management systems in improving production efficiency and reducing costs is becoming increasingly prominent. The study reviewed the existing research results and pointed out the shortcomings of the application of existing thermal management systems in hybrid manufacturing enterprises. On this basis, an intelligent thermal management system was designed, including modules such as heat generation model, cooling model, temperature prediction, and thermal management effect evaluation. The heat generation model simulates the distribution of heat sources during the production process, while the cooling model evaluates the effectiveness of different cooling strategies. The temperature prediction model combined with machine learning algorithms has improved the accuracy of temperature prediction, ultimately achieving quantitative evaluation of thermal management effectiveness. This article uses quantitative methods to analyze the cost-effectiveness of mixed manufacturing enterprises, with a focus on their production characteristics, quality benefits, and manufacturing unit design. Research has shown that reasonable thermal management can not only effectively reduce energy consumption, but also bring significant improvements in quality management, thereby supporting enterprises to implement more comprehensive cost-benefit control. Research has proposed optimization capability evaluation indicators and specific application strategies for cost-effectiveness optimization strategies in mixed manufacturing enterprises. Through the analysis of practical cases, the results show that after implementing the intelligent thermal management system, the overall production efficiency and economic benefits of the enterprise have significantly improved, providing useful practical guidance.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"59 ","pages":"Article 103314"},"PeriodicalIF":5.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143155613","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

Intelligent control system based on BIM visualization for indoor thermal energy regulation: A dynamic architectural design scheme

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress

Pub Date : 2025-01-27 DOI: 10.1016/j.tsep.2025.103315

Zinan Zou , Sijia Wang

With the impact of global climate change and the continuous increase in energy consumption, the thermal energy regulation of indoor environments has become an important issue in the field of architectural design. This article aims to explore the application of intelligent control systems based on BIM (Building Information Modeling) visualization in indoor thermal energy regulation, and propose a dynamic building design scheme to optimize indoor comfort and energy efficiency. The study pointed out the shortcomings of existing indoor environmental conditioning systems in terms of flexibility and energy efficiency. On this basis, an intelligent control system based on BIM visualization was designed, whose framework and functions include real-time data collection, analysis, and feedback to enhance the system’s control capabilities. Real time monitoring and optimization adjustment of indoor environment have been achieved through BIM visualization design method. The system test results show that the intelligent control system significantly improves efficiency in thermal energy regulation and reduces energy consumption. In order to further promote the energy-saving design of dynamic buildings, this project studied the process of dynamic building design, including the integration of environmental analysis and user needs. At the same time, a method for dynamic building environment optimization control was proposed, which achieved comprehensive management of building energy consumption through joint simulation of daylighting energy consumption. This study indicates that dynamic building design can effectively respond to environmental changes and improve the overall energy efficiency of buildings.

{"title":"Intelligent control system based on BIM visualization for indoor thermal energy regulation: A dynamic architectural design scheme","authors":"Zinan Zou , Sijia Wang","doi":"10.1016/j.tsep.2025.103315","DOIUrl":"10.1016/j.tsep.2025.103315","url":null,"abstract":"<div><div>With the impact of global climate change and the continuous increase in energy consumption, the thermal energy regulation of indoor environments has become an important issue in the field of architectural design. This article aims to explore the application of intelligent control systems based on BIM (Building Information Modeling) visualization in indoor thermal energy regulation, and propose a dynamic building design scheme to optimize indoor comfort and energy efficiency. The study pointed out the shortcomings of existing indoor environmental conditioning systems in terms of flexibility and energy efficiency. On this basis, an intelligent control system based on BIM visualization was designed, whose framework and functions include real-time data collection, analysis, and feedback to enhance the system’s control capabilities. Real time monitoring and optimization adjustment of indoor environment have been achieved through BIM visualization design method. The system test results show that the intelligent control system significantly improves efficiency in thermal energy regulation and reduces energy consumption. In order to further promote the energy-saving design of dynamic buildings, this project studied the process of dynamic building design, including the integration of environmental analysis and user needs. At the same time, a method for dynamic building environment optimization control was proposed, which achieved comprehensive management of building energy consumption through joint simulation of daylighting energy consumption. This study indicates that dynamic building design can effectively respond to environmental changes and improve the overall energy efficiency of buildings.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"59 ","pages":"Article 103315"},"PeriodicalIF":5.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143155618","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

Investigation of supercritical cracking characteristics of alkane and cycloalkane for heat sink application in a supersonic engine

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress

Pub Date : 2025-01-26 DOI: 10.1016/j.tsep.2025.103306

Madhavaiah Nalabala , Shree Veena Mamilla , Iyman Abrar , Appala Naidu Uttaravalli , Srikanta Dinda

Thermal control around the combustion chamber is a critical issue for a supersonic engine to work efficiently. Active cooling using onboard hydrocarbon fuel can be a potential solution to manage thermal loads. In the present investigation, the pyrolysis characteristics of cyclohexane and n-decane were examined under supercritical environments. Experiments were conducted for a temperature range between 500 °C and 600 °C and at 5.5 MPa pressure, to investigate the extent of cracking, coke deposition, and heat sink behavior of the fuels. The boiling properties, cracking conversion, product composition, carbon-to-hydrogen ratio, gas production, and aniline point of the feed and products were examined using a variety of analytical techniques. Two innovative methods were adopted to estimate fuel conversion and heat sink parameters. The suitability of the newly adopted conversion calculation method was validated from GCMS results. n-Decane showed about 33.4 % cracking conversion, which is 3.6 times higher conversion than cyclohexane at 600 °C and 5.5 MPa. Under the same condition, n-decane exhibited 3.3 times more coke deposition than cyclohexane. The total heat sinks of cyclohexane and n-decane are about 2110 and 2423 kJ/kg, respectively, at 600 °C. The outcome of this investigation can be useful in selecting a suitable hydrocarbon composition to manage the thermal load of an onboard supersonic engine.

{"title":"Investigation of supercritical cracking characteristics of alkane and cycloalkane for heat sink application in a supersonic engine","authors":"Madhavaiah Nalabala , Shree Veena Mamilla , Iyman Abrar , Appala Naidu Uttaravalli , Srikanta Dinda","doi":"10.1016/j.tsep.2025.103306","DOIUrl":"10.1016/j.tsep.2025.103306","url":null,"abstract":"<div><div>Thermal control around the combustion chamber is a critical issue for a supersonic engine to work efficiently. Active cooling using onboard hydrocarbon fuel can be a potential solution to manage thermal loads. In the present investigation, the pyrolysis characteristics of cyclohexane and n-decane were examined under supercritical environments. Experiments were conducted for a temperature range between 500 °C and 600 °C and at 5.5 MPa pressure, to investigate the extent of cracking, coke deposition, and heat sink behavior of the fuels. The boiling properties, cracking conversion, product composition, carbon-to-hydrogen ratio, gas production, and aniline point of the feed and products were examined using a variety of analytical techniques. Two innovative methods were adopted to estimate fuel conversion and heat sink parameters. The suitability of the newly adopted conversion calculation method was validated from GCMS results. n-Decane showed about 33.4 % cracking conversion, which is 3.6 times higher conversion than cyclohexane at 600 °C and 5.5 MPa. Under the same condition, n-decane exhibited 3.3 times more coke deposition than cyclohexane. The total heat sinks of cyclohexane and n-decane are about 2110 and 2423 kJ/kg, respectively, at 600 °C. The outcome of this investigation can be useful in selecting a suitable hydrocarbon composition to manage the thermal load of an onboard supersonic engine.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"59 ","pages":"Article 103306"},"PeriodicalIF":5.1,"publicationDate":"2025-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143155610","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

Determination of the hydrodynamic condition in artificial ground freezing based on multi-field coupling theory

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress

Pub Date : 2025-01-25 DOI: 10.1016/j.tsep.2025.103307

Zhiming Li , Rui Jiang , Aiping Tang , Kudryavtsev Sergey Anatolyevich

Artificial Ground Freezing (AGF) represents a widely adopted auxiliary technology utilized to mitigate groundwater infiltration and ensure the stability of excavation faces in underground construction endeavors. Notably, the hydrodynamic condition stands as the primary contributor to the non-uniformity observed in the freezing curtain. However, directly assessing the hydrodynamic condition during the construction of AGF poses a formidable challenge. In this study an moisture-heat model was initially formulated, incorporating two boundary treatment methodologies, to quantify temperature variations throughout the AGF under different hydrodynamic conditions. Given the inherent uncertainties associated with hydrodynamic conditions, a novel approach grounded in optimization theory (MHO) was proposed and integrated with the moisture-heat model. This methodology aims to ascertain the hydrodynamic condition within AGF by minimizing the summation of squared differences between calculated and monitored temperatures at selected, typical measurement points throughout the entire freezing. The proposed method was numerically resolved and subsequently validated through rigorous laboratory tests conducted by fellow researchers. The results indicate that the methodology presented in this paper offers more accurate predictions of hydrodynamic conditions; the comparison between calculated and monitored temperatures under optimized hydrodynamic conditions exhibits a significantly closer alignment than that obtained when solely considering horizontal hydrodynamic conditions.

{"title":"Determination of the hydrodynamic condition in artificial ground freezing based on multi-field coupling theory","authors":"Zhiming Li , Rui Jiang , Aiping Tang , Kudryavtsev Sergey Anatolyevich","doi":"10.1016/j.tsep.2025.103307","DOIUrl":"10.1016/j.tsep.2025.103307","url":null,"abstract":"<div><div>Artificial Ground Freezing (AGF) represents a widely adopted auxiliary technology utilized to mitigate groundwater infiltration and ensure the stability of excavation faces in underground construction endeavors. Notably, the hydrodynamic condition stands as the primary contributor to the non-uniformity observed in the freezing curtain. However, directly assessing the hydrodynamic condition during the construction of AGF poses a formidable challenge. In this study an moisture-heat model was initially formulated, incorporating two boundary treatment methodologies, to quantify temperature variations throughout the AGF under different hydrodynamic conditions. Given the inherent uncertainties associated with hydrodynamic conditions, a novel approach grounded in optimization theory (MHO) was proposed and integrated with the moisture-heat model. This methodology aims to ascertain the hydrodynamic condition within AGF by minimizing the summation of squared differences between calculated and monitored temperatures at selected, typical measurement points throughout the entire freezing. The proposed method was numerically resolved and subsequently validated through rigorous laboratory tests conducted by fellow researchers. The results indicate that the methodology presented in this paper offers more accurate predictions of hydrodynamic conditions; the comparison between calculated and monitored temperatures under optimized hydrodynamic conditions exhibits a significantly closer alignment than that obtained when solely considering horizontal hydrodynamic conditions.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"59 ","pages":"Article 103307"},"PeriodicalIF":5.1,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156864","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