Journal of Thermal Analysis and Calorimetry最新文献

{"title":"Recent advances in thermal analysis and calorimetry presented at the 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech–Hungarian–Polish–Slovakian) Thermoanalytical Conference (2023)","authors":"","doi":"10.1007/s10973-024-13618-2","DOIUrl":"10.1007/s10973-024-13618-2","url":null,"abstract":"","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"149 19","pages":"10363 - 10367"},"PeriodicalIF":3.0,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587891","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}

{"title":"Thermal characterization of plat heat exchanger made from polymer biocomposite reinforced by silicon carbide","authors":"Asih Melati,&nbsp;Abdelhakim Settar,&nbsp;Mounir Sahli,&nbsp;Khaled Chetehouna","doi":"10.1007/s10973-024-13624-4","DOIUrl":"10.1007/s10973-024-13624-4","url":null,"abstract":"<div><p>The thermal performance of natural-based composites remains a significant challenge in their industrial applications, especially in plat heat exchanger (PHE). This study aims to address this challenge by developing a bio-composite material using Green-epoxy biodegradable resin reinforced with banana fibre (Bn-GBC) and silicon carbide (SiC) as a filler, with the goal of improving its thermal conductivity and for fabrication PHE polymer biocomposite based. The study explores the effects of adding 2 mass% and 8 mass% SiC to the Bn-GBC, and an intumescent fire retardant (IFR) coating consisting of 29 mass% ammonium polyphosphate (APP) and 1 mass% boric acid was applied to the Bn-GBC/SiC samples. The manufacturing process involved the use of vacuum bag resin transfer moulding (VBRTM) technique. The study conducted Thermogravimetric analysis (TGA) tests under an O₂ atmosphere, with processing parameters such as temperature and variation in heating rates set at 303–1173 K and 5, 10, and 15 °C min⁻¹, respectively. The kinetic mechanism in the material was examined by calculating the kinetic parameters. The activation energy (<i>E</i>_a) was evaluated using model-free (the Friedman and KAS approaches) and fitting model of the Expanded Prout-Tompkins (Bna). In conclusion, all samples defined their kinetic parameter, the use of IFR reveals that increases <i>E</i>_a value by approximately 10–14%. TGA and cone calorimeter results indicated that the use of 8 mass% SiC improved the thermal stability of the composite compared to 2 mass% SiC. Moreover, from both thermal tests indicate that the application of a 16 mass% IFR (29Exolit/1BA) coating helped maintain the thermal stability and delay decomposition process. Thus, the PHE prototype was developed with 8 mass% SiC addition and without SiC addition. The Experimental and numerical heat assessment analysis was performed, it is proven that PHE/8SiC has a higher heat transfer compared to PHE/0SiC.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"149 19","pages":"10827 - 10849"},"PeriodicalIF":3.0,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587736","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}

{"title":"Spalling behavior of high-strength polypropylene fiber-reinforced concrete subjected to elevated temperature","authors":"Chung-Hao Wu","doi":"10.1007/s10973-024-13658-8","DOIUrl":"10.1007/s10973-024-13658-8","url":null,"abstract":"<div><p>This study aims to investigative the relationship between the pore pressure and the explosive spalling of polypropylene (<i>PP</i>) fiber reinforced concrete when subjected to high temperature. Using the vapor pressure gauge, the moisture measuring sensor, and the thermocouple to measure the vapor pressure, moisture content, temperature, and the temperature on the heated surface of slab specimen, and observing the explosive spalling for the specimens of cylinder and slab made of <i>PP</i> fiber concrete. Test results showed that only the cylindrical specimen without <i>PP</i> fiber and 100% moisture content was apparently subjected to explosive spalling. Comparing with the test results of the slab specimen, the moisture content of the cylinder specimen had a significant effect on the occurring of explosive spalling. On the other hand, the effect of <i>PP</i> fiber on explosive spalling was obviously improved. The control slab specimen without fiber presented explosive spalling on the fire-exposed surface, causing the steel bar to be exposed to air, while the internal temperature rose faster than the <i>PP</i> fiber slab specimen without explosive spalling. The non- <i>PP</i> fiber slab specimen is affected by explosive spalling, the heat trend effect of temperature showed more obvious, and its moisture movement was more rapid than the slab specimen with <i>PP</i> fiber. Under similar moisture content, the slab specimen without <i>PP</i> fiber started sooner to explosive spalling with a serious explosive failure, on the contrary, the slab specimen with 0.1% <i>PP</i> fiber was completely without explosive spalling, indicating the significant effect of anti-explosive spalling by adding <i>PP</i> fiber in concrete.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"149 19","pages":"10657 - 10669"},"PeriodicalIF":3.0,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587850","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}

{"title":"Review about the history of thermal analysis in Hungary","authors":"Imre Miklós Szilágyi,&nbsp;Alfréd Kállay-Menyhárd,&nbsp;János Kristóf,&nbsp;Sophie Korda,&nbsp;Zalán István Várady,&nbsp;Marcell Bohus,&nbsp;George Liptay","doi":"10.1007/s10973-024-13643-1","DOIUrl":"10.1007/s10973-024-13643-1","url":null,"abstract":"<div><p>This review discusses the development of the Derivatograph in the 1950s and the history of thermal analysis in Hungary. This device was the first commercial simultaneous thermogravimetry and differential thermal analysis (TG/DTA) instrument of the world. It initiated the development of thermal analysis and its application possibilities in a wide range during the second half of the last century. As a result, very strong thermoanalytical schools were established in Hungary, and the first thermoanalytical journal in the world, i.e., the Journal of Thermal Analysis was started in 1969, which is still a leading journal in the field, now under the title of Journal of Thermal Analysis and Calorimetry. In addition, several periodicals and books were published in thermal analysis in Hungary. In the paper, the most important Hungarian thermal analysis-related associations, events, acknowledgements and awards are also mentioned, together with names of major Hungarian researchers in this field. Presently, beside the internationally acknowledged research groups and the JTAC, the flagship of the Hungarian thermal analysis is the Journal of Thermal Analysis and Calorimetry Conference (JTACC) series.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"149 20","pages":"11363 - 11373"},"PeriodicalIF":3.0,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10973-024-13643-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636984","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}

{"title":"Size fraction characterisation of highly-calcareous and siliceous fly ashes","authors":"Jurij Delihowski,&nbsp;Piotr Izak,&nbsp;Łukasz Wójcik,&nbsp;Marcin Gajek,&nbsp;Dawid Kozień,&nbsp;Marcin Jarosz","doi":"10.1007/s10973-024-13566-x","DOIUrl":"10.1007/s10973-024-13566-x","url":null,"abstract":"<div><p>The properties of coal fly ash vary significantly depending on factors such as coal type, combustion conditions, and flue gas emission reduction methods. This study investigates the influence of particle size fractionation on the chemical composition, mineralogical structure, and thermal behaviour of two types of fly ash: high calcium ash derived from lignite (S1) and silica-rich ash from bituminous coal (S2). Dry aerodynamic separation was used to obtain distinct size fractions, which were then subjected to a comprehensive characterisation including X-ray fluorescence, X-ray diffraction, scanning electron microscopy, and thermal analysis. The results reveal notable differences between the S1 and S2 ashes and between their size fractions. The finer fractions (&lt; 20 μm) of S1 showed an increased calcium and sulphur content, while the coarser fractions (&gt; 100 μm) contained more silica and alumina. The S2 ash exhibited a higher overall silica content, with alkali metals concentrated in finer fractions. Thermal analysis demonstrated distinct behaviours for each type and fraction of ash. Fine fractions of S1 ash showed SO₂ emission at elevated temperatures, while S2 ash exhibited greater CO₂ gas emission. After thermal treatment, the recrystallisation of the glassy phase was observed for S1, while the S2 ashes were more prone to melting and agglomeration. The study highlights the potential for the customised utilisation of specific ash fractions in various applications, such as geopolymer synthesis, adsorbent materials, and refractory products. This comprehensive characterisation contributes to a better understanding of fly ash properties and their dependence on particle size, providing valuable insights to optimise fly ash utilisation in various industries. The findings suggest strategies for a more efficient use of fly ash resources, particularly relevant in the context of decreasing fly ash availability due to the phase-out of coal power plants.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"149 19","pages":"10587 - 10603"},"PeriodicalIF":3.0,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10973-024-13566-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587717","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}

{"title":"Study of thermal behavior and crystallization kinetics of glass microspheres in the Y3Al5O12-Al2O3 system","authors":"Alena Akusevich,&nbsp;Beáta Pecušová,&nbsp;Anna Prnová,&nbsp;Jana Valúchová,&nbsp;Ivana Parchovianská,&nbsp;Milan Parchovianský,&nbsp;Monika Michálková,&nbsp;Peter Švančárek,&nbsp;Róbert Klement","doi":"10.1007/s10973-024-13567-w","DOIUrl":"10.1007/s10973-024-13567-w","url":null,"abstract":"<div><p>Five types of glass microspheres with alumina and 40–80 mol.% Y₃Al₅O₁₂ were prepared using solgel Pechini and flame synthesis techniques. Glass thermal behavior was analyzed using DSC/TG, XRD and SEM, and the JMAK model was applied to study crystallization kinetics and determine prevailing mechanisms. All samples, except the one with 80 mol.% YAG, had two exothermic effects in their DSC curves. The first appeared between 937 and 950 °C, while the second was observed between 958 and 1102 °C. XRD analysis of crystallized microspheres confirmed the presence of YAG and various forms of alumina phases in the samples with lower YAG/higher Al₂O₃ content (40 and 50 mol.%). The sample with the highest YAG content showed the strongest tendency to crystallize in the kinetics study. The value of apparent activation energy (<i>E</i>_app) of this sample was 987.3 ± 13.0 kJ mol⁻¹. For the remaining samples, the values of <i>E</i>_app were higher and ranged from 1215.1 ± 10.6 to 1847.5 ± 9.3 kJ mol⁻¹, indicating the lowest ability of these compositions to crystallization. The growth of three-dimensional (3-D) YAG crystals was predominant in glasses with the highest (80 mol.%) YAG content. One-dimensional (1-D) growth of <i>γ</i>-Al₂O₃ crystals and 3-D growth of YAG crystals was predominant in glasses with the lowest (40 mol.%) YAG content.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"149 19","pages":"10999 - 11012"},"PeriodicalIF":3.0,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10973-024-13567-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587709","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}

{"title":"Thermal management of photovoltaic thermal (PVT) system for improving electrical performance","authors":"Abd Elmotaleb  A. M. A. Elamin","doi":"10.1007/s10973-024-13516-7","DOIUrl":"https://doi.org/10.1007/s10973-024-13516-7","url":null,"abstract":"<p>This paper provides a detailed economic and environmental assessment photovoltaic (PV) system equipped with an innovative cooling system. The cooling system features a finned enclosure attached to the bottom of the panel. This enclosure, designed in three different geometries, is exposed to solar irradiation reflected from a strategically placed mirror underneath it, while its upper side is connected to the solar panel. Additionally, a cooling duct is employed as a secondary cooling method. Both cooling zones utilize a working material enhanced with MWCNT nanoparticles to improve heat transfer properties. The study’s primary focus is on evaluating four critical performance metrics: payback period, carbon credit (CC), CO₂ mitigation (CM), and electrical power output. Through detailed analysis, it was discovered that increasing the Re (Reynolds) number significantly boosts the system’s efficiency, potentially doubling the electrical power output under optimal conditions. The results highlight Case B as the most effective configuration for CO₂ mitigation, demonstrating superior environmental benefits compared to the other cases. Conversely, Case C performs the worst in this regard. Notably, transitioning from Case C to Case B results in a 2.44% improvement in CO₂ mitigation. Furthermore, Case B also shows the shortest payback period, making it the most economically viable option, whereas Case C has the longest payback period. The significance of this research lies in its innovative approach to enhancing the sustainability of PVT. The use of MWCNT nanoparticles in the cooling mediums improves thermal management, leading to higher efficiency and greater power output.</p>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"46 4 1","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263848","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}

{"title":"Effect of magnetic field excitation and sinusoidal curved cavity coupling on heat transfer enhancement and entropy generation of nanofluids","authors":"Zhen Tian, Linfei Yue, Cong Qi, Maoqing Tang","doi":"10.1007/s10973-024-13596-5","DOIUrl":"https://doi.org/10.1007/s10973-024-13596-5","url":null,"abstract":"<p>This study innovatively developed a sinusoidal cavity heat transfer model and applied it to the natural convection heat transfer effect under magnetic field excitation through experimental exploration. The effects of heat input, mass concentration of nanofluids, magnetic density, magnetic field layout and other variables on heat transfer were studied. The consequence showed that for heat transfer, the horizontal magnetic field has a weakening effect, which can reduce the Nusselt number by 2.57% at most. The double lateral vertical staggered magnetic field has the best effect, and the Nusselt number can be increased by 5.37% at most. Under a vertical magnetic field, increasing the magnetic field strength will increase the corresponding entropy generation. The maximum increase is 9.11%. This will provide some guidance for design of cavity and the application of magnetic nanofluids in the field of thermal management of electronic components and also provides the possibility for designing more efficient thermal management systems in the future.</p>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"37 1","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263844","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}

{"title":"Exploring the potentialities of thermal asymmetries in composite wind turbine blade structures via numerical and thermographic methods: a thermophysical perspective","authors":"A. A. A. Figueiredo, G. D’Alessandro, S. Perilli, S. Sfarra, H. Fernandes","doi":"10.1007/s10973-024-13584-9","DOIUrl":"https://doi.org/10.1007/s10973-024-13584-9","url":null,"abstract":"<p>Using composite materials in turbine blades has become common in the wind power industry due to their mechanical properties and low mass. This work aims to investigate the effectiveness of the active infrared thermography technique as a non-destructive inspection tool to identify defects in composite material structures of turbine blades. Experiments were carried out by heating the sample and capturing thermographic images using a thermal camera in four different scenarios, changing the heating strategy. Such a preliminary experiments are prodromic to build, in future, the so-called optimal experiment design for thermal property estimation. The experimental results using two heaters arranged symmetrically on the sample detected the presence of the defect through temperature curves extracted from thermal images, where temperature asymmetries of 25% between the regions with and without defect occurred. Moreover, when only a larger heater was used in transmission mode, the defect was detected based on differences between normalized excess temperatures on the side with and without the defect in the order of 20%. Additionally, numerical simulations were carried out to present solutions for improving defect detection. It was demonstrated that active infrared thermography is an efficient technique for detecting flaws in composite material structures of turbine blades. This research contributes to advancing knowledge in inspecting composite materials. </p>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"11 1","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263846","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}

{"title":"Numerical investigation of a heat pipe receiver for the solar dish collector humidification–dehumidification desalination system","authors":"Mohammad Afarideh, Pouya Esfanjani, Mohammad Sadegh Valipour","doi":"10.1007/s10973-024-13580-z","DOIUrl":"https://doi.org/10.1007/s10973-024-13580-z","url":null,"abstract":"<p>Regarding the increasing demand for freshwater supply worldwide in coming years, solar desalination systems have good potential for tackling this challenge. Solar humidification–dehumidification desalination system is a technology that can effectively supply the water demand for rural areas with brackish water resources. Parabolic dish collectors with cavity receivers are one of the heat source options for this desalination technique. The main challenge for a dish collector with a cavity receiver-based desalination system is the low freshwater production rate. The current research aims to utilize a heat pipe receiver in a dish collector to heat brackish water to the required temperature for the humidification–dehumidification desalination process. According to the results, the flow rate of the inlet brackish water varied between 0.3 and 0.4875 L min⁻¹, while the temperature of the outlet brackish water of the heat pipes ranged from 60.20 to 64.24 °C. Moreover, the results show that with the application of a heat pipe receiver, a maximum thermal efficiency of 35.79% was determined in the parabolic dish collector system for water sample with 10,600 μS cm⁻¹ salinity. Moreover, 35.50, 35.30, and 35.08% were calculated for the average thermal efficiency values of the parabolic dish collector system for water samples with 3880, 10,600, and 21,500 μS cm⁻¹ salinity, respectively. Also, the maximum outlet temperature for the brackish water samples with 3880, 10,600, and 21,500 μS cm⁻¹ salinity were 63.98, 61.51, and 64.37 °C, respectively. According to the findings, heat pipe receivers lead to higher freshwater production rates than conventional cavity receivers.</p>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"31 1","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263847","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}