Thermal Science and Engineering Progress最新文献_第5页

Exploring heat exchange in space: Recent advances in two-phase fluid experiments in microgravity 探索太空中的热交换：微重力两相流体实验的最新进展

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-11-01 DOI: 10.1016/j.tsep.2024.103025

Glauco Nobrega , Inês Santos Afonso , Beatriz Cardoso , Reinaldo Rodrigues de Souza , Ana Moita , João Eduardo Ribeiro , Rui A. Lima

{"title":"Exploring heat exchange in space: Recent advances in two-phase fluid experiments in microgravity","authors":"Glauco Nobrega , Inês Santos Afonso , Beatriz Cardoso , Reinaldo Rodrigues de Souza , Ana Moita , João Eduardo Ribeiro , Rui A. Lima","doi":"10.1016/j.tsep.2024.103025","DOIUrl":"10.1016/j.tsep.2024.103025","url":null,"abstract":"<div><div>Thermal regulation has assumed a central role in space expeditions ever since the inception of Sputnik-1 in 1957. Throughout the years, numerous techniques have been developed to regulate temperatures in spacecraft and space habitats. Initially, passive systems like heat shields and thermal linings were employed, while newer missions embrace active cooling using fluids like ammonia and water. With significant advancements in lunar exploration, thermal management systems have been integrated to ensure effective heat protection and dissipation. Experiments carried out in drop towers, parabolic flights, sounding rockets, and aboard the International Space Station (ISS) have yielded valuable insights into the physics of fluids, pool boiling, boiling in two-phase flow, and cooling phenomena. However, conducting tests in microgravity conditions can lead to lower performances, and accurate numerical simulations remain a challenge. At present, various organizations are conducting research to drive progress in thermal management and enhance the technology of space devices. This review describes the most recent advances in two-phase fluid experiments in microgravity. Furthermore, the major challenges that persist in this field are presented and discussed, along with observations on trends and possibilities for the future of thermal control in space. This review attempts to be a relevant guide for future research and developments on thermal control in space.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"56 ","pages":"Article 103025"},"PeriodicalIF":5.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654344","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

Optimization of building thermal environment in industrial heritage landscape regeneration design simulation based on image visual visualization 基于图像可视化的工业遗产景观再生设计模拟优化建筑热环境

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-11-01 DOI: 10.1016/j.tsep.2024.103024

Yuan Gao , Wonjun Chung

{"title":"Optimization of building thermal environment in industrial heritage landscape regeneration design simulation based on image visual visualization","authors":"Yuan Gao , Wonjun Chung","doi":"10.1016/j.tsep.2024.103024","DOIUrl":"10.1016/j.tsep.2024.103024","url":null,"abstract":"<div><div>With the increasing attention paid to the regeneration design of industrial heritage landscape, how to effectively improve the thermal energy environment in these areas has become a research hotspot. The thermal efficiency of buildings not only affects the energy consumption, but also relates to the comfort of users and the sustainable development of the region. This study aims to explore the optimization method of building thermal energy environment based on image visual visualization, so as to achieve efficient regeneration of industrial heritage landscape, and improve the thermal energy performance and environmental adaptability of buildings through scientific design and simulation means. Through the use of computer aided design (CAD) and building information modeling (BIM) techniques, combined with heat flow simulation and visual image analysis, a detailed thermal environment assessment is carried out for selected industrial heritage buildings. Through data collection and analysis, we take into account factors such as sunlight, ventilation and heat loss in the building to develop an optimization plan. The simulation results show that the energy consumption of buildings with optimized thermal environment design is significantly reduced and the indoor thermal comfort is greatly improved. Visual tools effectively help the design team identify problem areas and provide intuitive data support for all parties during the design process. The optimization method of building thermal energy environment based on image visual visualization provides a new idea for the regeneration design of industrial heritage landscape, which helps to realize the dual goals of protecting the historical value and meeting the needs of modern environmental protection.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"56 ","pages":"Article 103024"},"PeriodicalIF":5.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578793","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 study of hybrid-type cooling tower with finned tube radiator 带翅片管散热器的混合型冷却塔的热研究

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-31 DOI: 10.1016/j.tsep.2024.103023

I.N. Madyshev , V.V. Kharkov

{"title":"Thermal study of hybrid-type cooling tower with finned tube radiator","authors":"I.N. Madyshev , V.V. Kharkov","doi":"10.1016/j.tsep.2024.103023","DOIUrl":"10.1016/j.tsep.2024.103023","url":null,"abstract":"<div><div>High-capacity and efficient cooling of the circulating water is an urgent task for modern industrial enterprises. A hybrid cooling tower has been developed to cool the circulating water, which is cooled by flowing inside an internal tube radiator, the surface of which is constantly wetted with coolant. For intensifying heat transfer processes, the surface of the radiator tubes is provided with circular fins. The paper presents a validated mathematical model of the process of cooling the circulating water in the hybrid cooling tower with the finned radiator. The influence of the material and dimensions of the fins on the thermal characteristics of the hybrid cooling tower is evaluated. It was found that changing the fin material to copper can increase the heat rate and capacity by 65.5 to 71.5 %, depending on the average temperature of the wetting liquid. It was shown that by using copper fins 3.5 mm high and spaced at a pitch of 2 mm, it is possible to increase the heat rate and capacity of the hybrid cooling system up to 5 times compared to smooth tubes of the radiator under the same conditions. It was determined that the selection of rational fin dimensions of radiator tubes ensures almost complete alignment of the thermal resistances of the radiator walls, which can enhance the heat rate and capacity of the hybrid cooling tower.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"56 ","pages":"Article 103023"},"PeriodicalIF":5.1,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578795","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

Energy-economic analysis and optimization of a shell and tube heat exchanger using a multi-objective heat transfer search algorithm 利用多目标传热搜索算法对管壳式热交换器进行能源经济分析和优化

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-30 DOI: 10.1016/j.tsep.2024.103021

Parth Prajapati , Bansi D. Raja , Vivek Patel , Hussam Jouhara

{"title":"Energy-economic analysis and optimization of a shell and tube heat exchanger using a multi-objective heat transfer search algorithm","authors":"Parth Prajapati , Bansi D. Raja , Vivek Patel , Hussam Jouhara","doi":"10.1016/j.tsep.2024.103021","DOIUrl":"10.1016/j.tsep.2024.103021","url":null,"abstract":"<div><div>This study presents the energy-economic analysis and optimization of a shell and tube heat exchanger. A water-water, segmental baffled shell and tube heat exchanger was designed using the Kern method and analysed by performing energy and economic modelling. The analysis is carried out considering the design variables on the shell side i.e. baffle cut, baffle spacing, shell diameter and tube side variables i.e. tube layout, tube outside diameter, number of tube passes and number of tubes. The multi-objective heat transfer search algorithm was used to optimize the heat exchanger for minimum total cost and maximum heat exchanger efficiency. Multiple optimal solutions were presented using the Pareto optimal curve. TOPSIS selection criteria was used to identify the optimum operating condition. Within the given bounds of the variables, the shell and tube heat exchanger can be operated at a minimum cost of 72,000 $/year resulting in 16.4 % efficiency, or, it can be operated at a maximum efficiency of 81.6 % with a total cost of 275,000 $/year. The scattered distribution of shell diameter, baffle spacing, number of tube passes and number of tubes between the lower and upper bound represent their substantial role in optimizing the heat exchanger performance. The number of tubes and tube passes showed the maximum variation in efficiency, while significantly less impact was observed when the tube layout was altered.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"56 ","pages":"Article 103021"},"PeriodicalIF":5.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571851","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

Profiles of peripheral regulatory T cells forecasts the feasibility of steroid withdrawal after liver transplantation based on cellular thermal modeling 基于细胞热建模的外周调节性 T 细胞图谱预测肝移植后停用类固醇的可行性

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-30 DOI: 10.1016/j.tsep.2024.103022

Linhui Pan , Di Lu , Di Wang , Xiao Xu

{"title":"Profiles of peripheral regulatory T cells forecasts the feasibility of steroid withdrawal after liver transplantation based on cellular thermal modeling","authors":"Linhui Pan , Di Lu , Di Wang , Xiao Xu","doi":"10.1016/j.tsep.2024.103022","DOIUrl":"10.1016/j.tsep.2024.103022","url":null,"abstract":"<div><div>After liver transplantation, steroid therapy is often used to prevent rejection. However, long-term steroid use can lead to serious side effects, therefore, this study aimed to evaluate the feasibility of peripheral regulatory T cell profiles for steroid discontinuation after liver transplantation through cellular thermal modeling and real-time monitoring of intracellular thermodynamics. In this study, cellular thermal modeling techniques were used to simulate the thermodynamic characteristics of peripheral TREgs under different conditions. The dynamic changes of peripheral Treg in liver transplantation animal models were monitored by flow cytometry and molecular biology. Significant changes in peripheral Treg profiles were observed after initiation of steroid therapy, especially in the discontinuation group, and these changes were strongly associated with the restoration of immune homeostasis. Real-time monitoring of the thermodynamic data revealed that peripheral Treg activity showed a specific temperature dependence in the cellular thermal model. Cell thermal modeling combined with real-time monitoring of intracellular thermodynamics provides a new perspective for evaluating the feasibility of peripheral regulatory T cell profiles for steroid discontinuation after liver transplantation. Strengthening the dynamic monitoring of peripheral Treg spectrum provides an important basis for the formulation of personalized immunosuppression strategies, and improves the therapeutic effect and quality of life of liver transplant patients.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"56 ","pages":"Article 103022"},"PeriodicalIF":5.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571760","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 heat transfer augmentation of impinging jet solar air heater with stepped transverse ribs 带有阶梯式横向肋条的冲击喷射式太阳能空气加热器传热增效实验研究

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-29 DOI: 10.1016/j.tsep.2024.103020

Chinmaya Mund, Sushil Kumar Rathore, Ranjit Kumar Sahoo

{"title":"Experimental investigation of heat transfer augmentation of impinging jet solar air heater with stepped transverse ribs","authors":"Chinmaya Mund, Sushil Kumar Rathore, Ranjit Kumar Sahoo","doi":"10.1016/j.tsep.2024.103020","DOIUrl":"10.1016/j.tsep.2024.103020","url":null,"abstract":"<div><div>The current experimental investigation analyses the thermal and frictional attributes of an impinging jet solar air heater (IJSAH) with stepped transverse ribs, having varying pitch and size, affixed to the absorber plate. Two ribs of dimension 2 × 4 (R1) and 4 × 6 cm (R2) were tested. The pitch (<em>p</em>) between ribs was 2, 4, and 8 cm, with Reynolds number (<em>Re</em>) varying from 4913 to 13103. The jet hole diameter (Dj) considered were 3, 6 and 9 mm. The maximum Nusselt number (<em>Nu</em>) with the recommended R1 rib having <em>p</em> = 4 cm and Dj = 3 and 6 mm equalled 128.784 and 104.5004 at <em>Re</em> = 13103, respectively, which was 31.22 and 21.76 % higher than that generated by smooth IJSAH. The friction factor (<em>f</em>) generated by the ribbed IJSAH having Dj = 6 mm and <em>p</em> = 4 cm was 57.08 % lower than ribbed IJSAH with Dj = 3 mm. The peak thermohydraulic performance parameter (THPP) achieved was for R1 rib with <em>p</em> = 4 cm and Dj = 6 mm and equalled 1.75, which was 19.49 % higher than smooth IJSAH. The R1 rib with <em>p</em> = 4 cm at Re = 11465 demonstrated better thermal characteristics based on detailed investigation.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"56 ","pages":"Article 103020"},"PeriodicalIF":5.1,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578794","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

Study on the acoustic disturbance characteristics of the spray flame 喷射火焰的声学干扰特性研究

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-28 DOI: 10.1016/j.tsep.2024.103016

Dongliang Wei, Hao Fang, Hao Zhou

{"title":"Study on the acoustic disturbance characteristics of the spray flame","authors":"Dongliang Wei, Hao Fang, Hao Zhou","doi":"10.1016/j.tsep.2024.103016","DOIUrl":"10.1016/j.tsep.2024.103016","url":null,"abstract":"<div><div>The axial sound field was added to the ethanol spray flame as a perturbation element to study the dynamic response and combustion characteristics. A forced acoustic field is applied to a small oscillating flame. In cases where the frequency of the external sound field matches the eigenfrequency, even small amplitude self-excited flames demonstrate significant instability. As the intensity of the sound field increases, the amplitude of pressure oscillations sharply rises, and the pressure and flame heat release oscillations are in-phase. When the sound field operates at frequencies other than the eigenfrequency, it has an inhibitory effect on the evaporation and combustion process of ethanol droplets. Consequently, intensifying the sound field leads to a reduction in both the area of the evaporation combustion zone and the axial temperature of the flame. The CO formation is influenced by both temperature and the sound field, showing a pattern of increasing and then decreasing with the increase of sound intensity. Additionally, NOx generation exhibits higher emission concentrations in low-temperature and short flames, which is more likely to prompt NOx and is not closely related to frequency.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"56 ","pages":"Article 103016"},"PeriodicalIF":5.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571761","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 laminar flow and heat transfer performance of Gallium alloy based nanofluids in minichannel heat sink 微型通道散热器中镓合金基纳米流体的层流和传热性能研究

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-24 DOI: 10.1016/j.tsep.2024.103000

Adeel Muhammad , Usman Allauddin , Alfredo Iranzo

{"title":"Investigation of laminar flow and heat transfer performance of Gallium alloy based nanofluids in minichannel heat sink","authors":"Adeel Muhammad , Usman Allauddin , Alfredo Iranzo","doi":"10.1016/j.tsep.2024.103000","DOIUrl":"10.1016/j.tsep.2024.103000","url":null,"abstract":"<div><div>In this research, 3-D numerical analysis is carried out for single-phase laminar flow in a minichannel heat sink subjected to a uniform value of heat flux. The influence of various substrate materials (Aluminum nitride AlN, Copper alloy Cu, and Silicon Si) and different working fluids GaIn, GaIn-based nanofluids (GaIn-6 %CNT, GaIn-6 %Diamond, GaIn-6 %Alumina) and water on the maximum heat flux, pumping power, average heat transfer coefficient, total thermal resistance and pressure loss is examined for Reynolds number (Re = 300 − 1900) inside minichannel. It is noted that the substrate’s conductivity substantially influences the heat transfer coefficient of minichannel, with higher conductivity leading to a higher heat transfer coefficient. Besides, among all the coolants, the GaIn-6 %CNT alloy with superior thermal conductivity shows an enhanced heat transfer coefficient compared to other coolants in this study. Simulations results depict that the average heat transfer coefficient (h) of GaIn-6 %CNT, GaIn-6 %Diam, and GaIn-6 %Al<sub>2</sub>O<sub>3</sub> relative to that of GaIn alloy is increased by 8.40 %, 7.63 %, and 0.22 %, respectively for Cu substrate at <em>φ</em> = 6 % and Re = 1900. Moreover, for GaIn-6 %CNT, which is used as a liquid metal nanofluid, and Cu is replaced with Si substrate, (h) increases by 35 % and 62.5 % at Re = 1900 and Re = 300, respectively. Similarly, when Cu is used to replace AlN, (h) increases by 11 % and 18.20 % for Re = 1900 and Re = 300, respectively. Finally, numerical findings of the pressure loss and pumping power for working fluids employed in minichannel are discussed and compared with the calculations obtained by analytical correlations.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"56 ","pages":"Article 103000"},"PeriodicalIF":5.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560710","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 on the design of a three-phase power factor corrector utilizing a SEPIC converter 利用 SEPIC 转换器设计三相功率因数校正器的实验研究

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-20 DOI: 10.1016/j.tsep.2024.102951

Jitha Varghese, T. Anuradha

{"title":"Experimental investigation on the design of a three-phase power factor corrector utilizing a SEPIC converter","authors":"Jitha Varghese, T. Anuradha","doi":"10.1016/j.tsep.2024.102951","DOIUrl":"10.1016/j.tsep.2024.102951","url":null,"abstract":"<div><div>A new configuration for a three-phase electric vehicle (EV) charger based on the Single-Ended Primary Inductor Converter (SEPIC) topology. The proposed charger operates as a power factor correction (PFC) converter, offering both step-up (boost) and step-down (buck) functions, enabling efficient adaptation to different input voltage levels while ensuring a stable DC output. By incorporating closed-loop current control and fast-switching regulation, the system attains unity power factor, which helps to reduce power losses and improve overall power quality. A unique control technique is proposed to regulate input current under unbalanced voltage conditions, ensuring reliable operation and high efficiency even during grid fluctuations. Simulations using MATLAB/Simulink demonstrate that, in unbalanced voltage scenarios, the control method maintain stable input current shaping, highlighting the system’s resilience. The results validate the SEPIC-based EV charger’s ability to consistently deliver efficient charging performance in both balanced and unbalanced voltage conditions, while achieving unity power factor and stable voltage regulation.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"56 ","pages":"Article 102951"},"PeriodicalIF":5.1,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578792","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

Vat photopolymerization for thermal energy storage applications using encapsulated phase change material suspended in photocurable resin 使用悬浮在光固化树脂中的封装相变材料进行热能储存应用的罐式光聚合反应

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-18 DOI: 10.1016/j.tsep.2024.102986

Isabel Melendez, Karl B. Morgan, Casey J. Troxler, Rafael M. Rodriguez, Sandra K.S. Boetcher

{"title":"Vat photopolymerization for thermal energy storage applications using encapsulated phase change material suspended in photocurable resin","authors":"Isabel Melendez, Karl B. Morgan, Casey J. Troxler, Rafael M. Rodriguez, Sandra K.S. Boetcher","doi":"10.1016/j.tsep.2024.102986","DOIUrl":"10.1016/j.tsep.2024.102986","url":null,"abstract":"<div><div>A novel approach to additively manufacture latent heat thermal energy storage heat exchangers through the development of microencapsulated phase change material (MEPCM) suspensions in photocurable resin for vat photopolymerization (VPP) 3D printing is presented. Using MEPCM addresses the leakage risks that have typically been associated with PCMs and subsequently makes the particulates a suitable additive for VPP 3D printing. In the current study, VPP was employed to fabricate functional composites with varying MEPCM mass fractions for thermal, rheological, microstructure, and chemical characterization. Microstructure visualization was conducted to assess the overall distribution of MEPCM within the 3D printed samples and to confirm the structural integrity of the encapsulated particles after printing. The influence of the base resin viscosity was explored by investigating two photocurable resins with different viscosities—a high-tensile UV photopolymer and an ABS-like resin—during the printing process. Thermal properties, such as latent heat of fusion, phase-change temperature, thermal conductivity, and decomposition temperature of the 3D printed samples were determined. Rheology was used to observe the effect of varying shear rates on the MEPCM-resin mixtures to identify the optimal viscoelastic properties for VPP 3D printing. It was determined that the ABS-like resin was able to contain a larger amount of PCM (40 wt%) while maintaining printability due to the lower viscosity of the corresponding pure resin. The 40 wt% MEPCM composite exhibited an average viscosity of 18,817 cPs, a maximum latent heat of fusion of 54.12 kJ/kg, and a 12.4% reduction in thermal conductivity compared to the pure polymer.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"56 ","pages":"Article 102986"},"PeriodicalIF":5.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654350","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