Thermal Science and Engineering Progress最新文献_第4页

Development of an artificial intelligence-based cooling load map for buses in Türkiye

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-16 DOI: 10.1016/j.tsep.2025.103516

Şaban Ünal , Mehmet Bilgili , Orhan Büyükalaca , Hakan Akgün

{"title":"Development of an artificial intelligence-based cooling load map for buses in Türkiye","authors":"Şaban Ünal , Mehmet Bilgili , Orhan Büyükalaca , Hakan Akgün","doi":"10.1016/j.tsep.2025.103516","DOIUrl":"10.1016/j.tsep.2025.103516","url":null,"abstract":"<div><div>Accurate calculation of air-conditioning cooling load is a prerequisite for optimal design of vehicle air-conditioning systems.This study aims to develop a monthly average bus cooling load map for Türkiye using an artificial neural network (ANN) approach. For this purpose, the Radiant Time Series (RTS) method recommended by ASHRAE was used as the cooling load calculation method. The cooling load values obtained for all 81 cities of Türkiye then utilized to train the ANN model, and a cooling load map was created that allows for the determination of the cooling load value for buses across the country. A comparison of the results from the RTS and ANN methods revealed high similarity, with Adana showing the highest cooling load and Ardahan the lowest in both models. The difference between maximum cooling load values from RTS and ANN ranged from 13.4% to 8.8% across test cities. Ultimately, the ANN approach offers a rapid and reliable means of calculating bus cooling loads, allowing for predictive adjustments to air-conditioning systems and potential energy savings.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"61 ","pages":"Article 103516"},"PeriodicalIF":5.1,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645013","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

Performance investigation of a novel multi-tray solar cabinet dryer with multi-point air supply

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-16 DOI: 10.1016/j.tsep.2025.103515

P.V. Ajay Kumar , A. James , M. Srinivas

{"title":"Performance investigation of a novel multi-tray solar cabinet dryer with multi-point air supply","authors":"P.V. Ajay Kumar , A. James , M. Srinivas","doi":"10.1016/j.tsep.2025.103515","DOIUrl":"10.1016/j.tsep.2025.103515","url":null,"abstract":"<div><div>Agricultural produce requires drying for preservation. Employing renewable energy sources, particularly solar energy, can significantly enhance the sustainability of this process. This study seeks to improve the efficiency of a multi-tray solar cabinet dryer by achieving homogenous drying through a multi-point air supply (MPAS). A thorough numerical analysis was performed to examine the thermal aspects of the proposed system using two configurations, namely, a multi-point air supply from two corners and four corners, and to contrast them with those of a conventional dryer. In addition, the numerically optimized system was experimentally tested under controlled indoor conditions to dry bitter gourd (Momordica charantia) slices. Compared to the conventional system, the standard deviation of the temperature profiles across all trays of the proposed MPAS system was reduced by 52.2% and 35.5% for the two-corner and four-corner configurations, respectively, indicating greater uniformity in the heat distribution. Among the two configurations, the MPAS from the two corners exhibited superior heat transfer performance. Furthermore, an experimental study conducted to investigate the drying performance of the proposed MPAS from two corners demonstrated a 23.3% increase in energy efficiency over the conventional system owing to homogenous drying across multiple trays. The average energy utilization was enhanced by 26.3%, with the EUR for the proposed systems reaching 58.5% and 54.2%, respectively. The time required for drying bitter gourd samples was reduced by 22% by introducing a multi-point air supply into a conventional multi-tray solar cabinet air dryer, making it viable for faster agricultural crop drying.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"61 ","pages":"Article 103515"},"PeriodicalIF":5.1,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642627","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 comparative analysis of microstructure, water retention, thermal stability and fire performance between gel and film-forming fluoroprotein firefighting foams

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-16 DOI: 10.1016/j.tsep.2025.103520

Jinlong Zhao , Haoyuan Li , Chenxi Jia , Jing Li , Jianping Zhang

{"title":"A comparative analysis of microstructure, water retention, thermal stability and fire performance between gel and film-forming fluoroprotein firefighting foams","authors":"Jinlong Zhao , Haoyuan Li , Chenxi Jia , Jing Li , Jianping Zhang","doi":"10.1016/j.tsep.2025.103520","DOIUrl":"10.1016/j.tsep.2025.103520","url":null,"abstract":"<div><div>Firefighting foams are commonly used for suppressing and extinguishing large-scale liquid fuel fires. However, traditional foams such as aqueous film-forming foams (AFFFs) and film-forming fluoroprotein foams (FFFPs) have some known limitations including worsened thermal stability under strong radiation and difficulty in biodegradation due to the presence of perfluorooctyl sulfonate. In this study, a new gel foam was developed using bio-based guar gum (GG) and borax (B), in combination with a composite foaming agent of C8-14 alkyl glucoside (APG-0814) and alkyl ethoxy polyglycosides (AEG). The best performed gel formulations were selected based on orthogonal analysis of formability and stability. Subsequently, their microstructure, water retention capacity and thermal stability were evaluated against a commercial FFFP. Finally, fire extinguishing and burnback tests using the gel foams were conducted. Results showed that the formulation with 0.5 wt% composite foaming agent, 0.4 wt% GG and 0.005 wt% B has the overall best performance. Its water retention rate is 56.9 % after 60 min compared to 47.8 % for the FFFP. Whilst its extinguishing time was similar to that of the FFFP, its 90 % burnback time shows a 152.7 % increase compared to the FFFP. The improved anti-burnback performance can be attributed to the stable gel foam skeleton which enhanced both water retention capacity and thermal stability. This research provides not only a holistic approach for assessing fire performance of existing firefighting foams but a basis for further development of firefighting gel foams.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"61 ","pages":"Article 103520"},"PeriodicalIF":5.1,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance analysis of a solar-driven rotating desiccant wheel air-conditioning system in Guangzhou

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-16 DOI: 10.1016/j.tsep.2025.103518

Shusen Lin , Tao Zeng , Lisheng Deng , Hongyu Huang

{"title":"Performance analysis of a solar-driven rotating desiccant wheel air-conditioning system in Guangzhou","authors":"Shusen Lin , Tao Zeng , Lisheng Deng , Hongyu Huang","doi":"10.1016/j.tsep.2025.103518","DOIUrl":"10.1016/j.tsep.2025.103518","url":null,"abstract":"<div><div>To address the high energy consumption of air-conditioning systems in Guangdong, this study contributes a model of a solar-driven rotary desiccant wheel air conditioning system using TRNSYS. This model is used to investigate the operating characteristics of the system for an office building in Guangzhou during the cooling season, which spans from May to October. Firstly, the effect of the circulating pump flow rate of the solar collector and water tank on the regeneration gas temperature is evaluated. The results indicate that the regeneration gas temperature increases with the increasing flow rates of both circulating pumps under the conditions examined. The optimal flow rates for the regeneration gas, the circulating pumps of the solar collector, and the water tank are 720 kg·h<sup>−1</sup>, 960 kg·h<sup>−1</sup>, and 960 kg·h<sup>−1</sup>, respectively. Furthermore, the operational performance and energy consumption characteristics of the proposed and conventional air conditioning systems were analyzed and compared. Results demonstrate that the average electrical coefficient of performance (COP) of the proposed system is about 3.8, which is 1.37 times higher than that of the conventional air conditioning system, with an energy saving of about 24.7 % and a reduction in annual CO<sub>2</sub> emissions of 744 kg. This work offers a new possibility for energy efficiency in buildings in high temperature and high humidity areas such as Guangzhou and validates the new system as a major contributor to experimental carbon reduction and carbon neutrality.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"61 ","pages":"Article 103518"},"PeriodicalIF":5.1,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645015","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

Experimental investigation of front cooling for solar panels by using saturated hydrogel beads

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-15 DOI: 10.1016/j.tsep.2025.103512

Abdullah Alrashidi , Saber Abdo , M.A. Abdelrahman , Ahmed A. Altohamy , Ismail M.M. Elsemary

{"title":"Experimental investigation of front cooling for solar panels by using saturated hydrogel beads","authors":"Abdullah Alrashidi , Saber Abdo , M.A. Abdelrahman , Ahmed A. Altohamy , Ismail M.M. Elsemary","doi":"10.1016/j.tsep.2025.103512","DOIUrl":"10.1016/j.tsep.2025.103512","url":null,"abstract":"<div><div>Solar panels are highly sensitive to changes in meteorological conditions and operating temperature. This paper presents a novel experimental study involving the use of water-saturated hydrogel beads as a front passive cooling technique for solar cells. Three different configurations of hydrogel beads − one, two, and three layers − were studied optically by evaluating their transmittance to solar radiation and then thermally by investigating their cooling effect on solar panels’ performance and comparing them to uncooled panels. All configurations were tested at 600, 800, and 1000 W/m<sup>2</sup> solar intensity and compared with the uncooled panel.</div><div>Results showed that increasing the number of hydrogel layers from one to three reduced solar cell temperatures by 33.2 % to 40.3 %, while electrical efficiency increased from 8.9 % to 10.8 %. Experimental data revealed that a single hydrogel layer is the best configuration for cooling solar cells, as it has the highest light transmission (92.2 %), lowers the cell temperature by 17.4 °C, and increases cell efficiency by approximately 8.9 %, with a corresponding increase in output power of about 5.6 % compared to the non-cooled cell at a solar radiation level of 1000 W/m<sup>2</sup>.</div><div>From an environmental standpoint, the proposed system helps mitigate climate change by reducing annual carbon emissions by approximately 1870 kg CO<sub>2</sub> per year, saving approximately $93.5 per year in carbon costs.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"61 ","pages":"Article 103512"},"PeriodicalIF":5.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685870","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

Life cycle assessment of implementation of an innovative solar thermal technology in Italian ceramic industry

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-15 DOI: 10.1016/j.tsep.2025.103517

Bernardo Buonomo , Oronzio Manca , Sergio Nardini , Renato Elpidio Plomitallo , Lisa Gobio-Thomas , Valentina Stojceska

{"title":"Life cycle assessment of implementation of an innovative solar thermal technology in Italian ceramic industry","authors":"Bernardo Buonomo , Oronzio Manca , Sergio Nardini , Renato Elpidio Plomitallo , Lisa Gobio-Thomas , Valentina Stojceska","doi":"10.1016/j.tsep.2025.103517","DOIUrl":"10.1016/j.tsep.2025.103517","url":null,"abstract":"<div><div>In recent years, the depletion of fossil fuel reserves, coupled with the European Union targets to increase the integration of renewable energy into the energy mix has prompted both industries and the scientific community to shift their focus towards alternative systems driven by sustainable energy sources. The imperative for renewable energies arises from the necessity to decrease dependency on fossil fuels, particularly to mitigate carbon dioxide emissions. The existing literature extensively documents how integrating renewable energy into industrial processes can help reduce environmental impact. The novelty of this study lies in the life cycle assessment (LCA) of ceramic sanitaryware production in Italy, specifically evaluating the use of thermal energy from a solar thermal system in the drying and firing processes, thereby reducing fossil fuel consumption. To this end, an LCA was conducted to assess the environmental impacts of replacing natural gas in the drying process with thermal energy from the SunDial solar thermal technology. The LCA methodology was applied to quantify the energy and environmental burdens of the system throughout its entire life cycle, including manufacturing, operation, and end-of-life stages. The functional unit is 1000 kg of sanitaryware production. Data was collected from the Ecoinvent database, and the assessment was performed using SimaPro software. The results indicate a 4 % reduction in global warming potential (GWP) due to the implementation of SunDial, which covers 20 % of the process’s energy demand. On a national scale, considering the entire Italian sanitaryware production, this translates into a savings of 180 tons of CO<sub>2</sub> emissions.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"61 ","pages":"Article 103517"},"PeriodicalIF":5.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of a novel Humidification-Dehumidification Desalination system hybridised with Indirect Evaporative Cooling and Vapour Compression Refrigeration

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-15 DOI: 10.1016/j.tsep.2025.103513

Andrea Rocchetti, Luca Socci

{"title":"Study of a novel Humidification-Dehumidification Desalination system hybridised with Indirect Evaporative Cooling and Vapour Compression Refrigeration","authors":"Andrea Rocchetti, Luca Socci","doi":"10.1016/j.tsep.2025.103513","DOIUrl":"10.1016/j.tsep.2025.103513","url":null,"abstract":"<div><div>In this work, a novel configuration of a Humidification-Dehumidification (HDH) Desalination system, called <em>Enhanced Indirect Cooling Evaporative Desalination-Closed</em> cycle (EICED-C), obtained by the hybridisation of an HDH configuration with Indirect Evaporative Cooling (IEC) and Vapour Compression Refrigeration (VCR) devices, is presented. The IEC is intended as an efficient saltwater evaporator-air humidifier. Both coils of VCR are employed: the hot coil to heat airflow enhancing the saltwater evaporation process and the cold coil to provide the cooling capacity for pure water recovery. The system is closed on the air side and two versions of closing solutions are shown and compared. The cycle is theoretically introduced and modelled, using data from commercial devices to give an applicative target to the study, and subjected to parametric analysis. In the best operative conditions, version 1 shows a SEC (energy efficiency) of 172.3 kWh/m<sup>3</sup> and a RWA (water recovery) of 5.2∙10<sup>-6</sup>, version 2 a SEC of 159.9 kWh/m<sup>3</sup> and a RWA of 5.6∙10<sup>-6</sup>. Air-side pressure drops and the related consumptions for air moving are counted and their weight in the optimisation of efficient HDH systems is highlighted. The obtained results lead to consider these proposals as very competitive in the field of HDH desalination.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"61 ","pages":"Article 103513"},"PeriodicalIF":5.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on multi-objective optimization of bioreactor cupped impeller CFD based on improved proxy model

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-14 DOI: 10.1016/j.tsep.2025.103508

Quan Shi , Xiaoliang Xu , Huafeng Deng , Jianlin Li , Qinghai Zhang

{"title":"Research on multi-objective optimization of bioreactor cupped impeller CFD based on improved proxy model","authors":"Quan Shi , Xiaoliang Xu , Huafeng Deng , Jianlin Li , Qinghai Zhang","doi":"10.1016/j.tsep.2025.103508","DOIUrl":"10.1016/j.tsep.2025.103508","url":null,"abstract":"<div><div>Bioreactors are widely used to liquid–liquid mixing in the chemical and biological fields. As a core component for enhancing the mixing efficiency of bioreactors, the structural optimization of the impeller is crucial. The study aims to analyze the impact of bioreactor cupped impeller structures on performance and to optimize the structure using an improved surrogate model. Firstly, a complete Computational Fluid Dynamics (CFD) and Fluid-Structure Interaction (FSI) simulation model is established, and its applicability is verified using the component transfer method (with the maximum relative error between simulation and experiment being 4.5 % and the minimum 0.01 %). Consideration of impeller structural variables(<em>X, k, i,M</em>), the influence of impeller structure on mixing and mechanical performance was explored. Secondly, sensitivity analysis is innovatively introduced to improve proxy model, solving the problem of excessive training sample size. Then, the mapping relationship between impeller structure parameters and performance was established, and the key parameters were optimized by genetic algorithm. The optimized impeller configuration ranged: <em>X</em> as one, <em>M</em> approximately between 160 mm and 165 mm, and angle <em>β</em> around 6° or 35°. Concurrently, compared with the optimal solution of the range analysis, the optimization effect of the improved surrogate model on the turbulent flow energy of the impeller is increased by 45.63 %, and the maximum equivalent stress is reduced by 48.67 %. Considering different manufacturing requirements, application scenarios, and material selections, this study also provides corresponding theoretical and practical recommendations.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"61 ","pages":"Article 103508"},"PeriodicalIF":5.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685884","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

Simplified inverse heat conduction method for interfacial heat transfer coefficient of casting process based on simulated feedback

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-14 DOI: 10.1016/j.tsep.2025.103506

Yuhao Chen , Kuo Liu , Dunming Liao , Zhijun Ji , Jianhui Zhang

{"title":"Simplified inverse heat conduction method for interfacial heat transfer coefficient of casting process based on simulated feedback","authors":"Yuhao Chen , Kuo Liu , Dunming Liao , Zhijun Ji , Jianhui Zhang","doi":"10.1016/j.tsep.2025.103506","DOIUrl":"10.1016/j.tsep.2025.103506","url":null,"abstract":"<div><div>Currently, there are many methods for solving the interface heat transfer coefficient, but the classical solution method requires high precision of casting temperature points, needing precise temperature measurements at multiple points on the casting and mold. For complex processes and special pouring environments, achieving stable casting is often difficult. This paper proposes an interfacial heat transfer coefficient solution method based on the secant method and numerical simulation platform. By adjusting the interface heat transfer coefficient, the solidification process of the casting is calculated and a feedback model of the temperature curve is established. A secant method is designed to correct the interface heat transfer coefficient, ensuring accurate fitting of the simulated temperature curve to the target curve, thereby achieving accurate determination of the interface heat transfer coefficient. This method avoids the difficulty of temperature measurement in complex processes and special pouring environments, requiring only the temperature curve of a single point. By comparing assumed interface heat transfer coefficients with the calculation results, it is shown that this method can accurately fit the temperature field, less than 0.1% of the average error in the temperature field and less than 1% of the average error in the interfacial heat transfer coefficient, demonstrating the reliability of the method. Based on the actual temperature measurement results, the curve of titanium alloy investment casting obtained. The final temperature curve fitting accuracy reaches 0.1%, matching well with the actual results, yielding the curve of the interface heat transfer coefficient variation with temperature for TA15 investment casting.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"61 ","pages":"Article 103506"},"PeriodicalIF":5.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143703887","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

Numerical study of pool boiling heat transfer on pin-fin surface submerged in dielectric fluid

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-14 DOI: 10.1016/j.tsep.2025.103507

Liril Dhirajkumar Silvi, Arun Raj Shanmugam, Ki Sun Park

{"title":"Numerical study of pool boiling heat transfer on pin-fin surface submerged in dielectric fluid","authors":"Liril Dhirajkumar Silvi, Arun Raj Shanmugam, Ki Sun Park","doi":"10.1016/j.tsep.2025.103507","DOIUrl":"10.1016/j.tsep.2025.103507","url":null,"abstract":"<div><div>This study employs the Eulerian–Eulerian Rensselaer Polytechnic Institute (RPI) model and performs numerical simulations to investigate pool boiling heat transfer on pin–fin structured surfaces submerged in dielectric fluid FC-72. Utilizing the Eulerian–Eulerian approach, different force, interface, and boiling models are examined using extensive numerical simulations, and suitable model selections are proposed that enhance the heat flux predictions. A two-dimensional polynomial correlation for the bubble waiting time coefficient (<em>C<sub>w</sub></em>) is developed as a function of the area enhancement factor and wall superheating based on available experimental data for rectangle-shaped fins. Further studies validating the model against experimental data excluded from the correlation development demonstrated a maximum error of 7.34% in the heat flux prediction. The RPI model is further utilized for different-shaped pin–fin geometries, such as rectangular, trapezoidal, and hierarchical fins. Performance comparison studies revealed that hierarchical fins consistently achieved the highest heat flux values, indicating their superior heat transfer capacity in comparison with rectangular and trapezoidal fins that have the same number of fins and identical area enhancement factors. The presented model and correlations are expected to offer a strong numerical framework for optimizing thermal management solutions in electronic cooling applications using dielectric fluids.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"61 ","pages":"Article 103507"},"PeriodicalIF":5.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0