MATEC Web of Conferences最新文献_第2页

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202337701018

Abdul Zahir, Perumal Kumar, A. Saptoro, A. N. T. Tiong, Samreen Hameed, M. Shah

{"title":"Liquid mean residence time (MRT) in rotating packed bed (RPB) by empirical correlation and residence time distribution (RTD) method using computational fluid dynamics (CFD) simulation","authors":"Abdul Zahir, Perumal Kumar, A. Saptoro, A. N. T. Tiong, Samreen Hameed, M. Shah","doi":"10.1051/matecconf/202337701018","DOIUrl":"https://doi.org/10.1051/matecconf/202337701018","url":null,"abstract":"Rotating packed bed (RPB) belongs to a HIGee technology, a process intensification device that can provide better mass transfer rate due to the generation of hyper-gravity under the influence of centrifugal force. While determining the efficiency of the RPB, the MRT of the liquid plays a vital role. The MRT of the RPB is very small and can be tuned in accordance with the mass transfer rate of the solvent to achieve the required outlet concentration of the absorbed gas. There exist two methods, i.e., empirical correlation and the residence time distribution (RTD) method. The applicability of both methods still needs to be investigated for better prediction of MRT in RPB. The current study compares the MRT of the two of the most widely employed techniques, i.e., MRT by empirical correlation and the RTD approach using the Computational Fluid Dynamics (CFD). The difference between the MRT by both methods lies between 30-38%. The results show that the RTD better predicts the MRT in the RPB as compared to the Burns empirical correlation.","PeriodicalId":18309,"journal":{"name":"MATEC Web of Conferences","volume":"24 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78661899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research and Improvement of Electromechanical Transient Performance of Power System Based on SIMULINK 基于SIMULINK的电力系统机电暂态性能研究与改进

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202338201018

Duo Wang

引用次数: 0

Energy and exergy analysis of a pilot plant for the co-production of cold and electricity 冷电联产试验工厂的能源和火用分析

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202337901005

S. Braccio, H. Phan, N. Tauveron, Nolwenn Le Pierrès

{"title":"Energy and exergy analysis of a pilot plant for the co-production of cold and electricity","authors":"S. Braccio, H. Phan, N. Tauveron, Nolwenn Le Pierrès","doi":"10.1051/matecconf/202337901005","DOIUrl":"https://doi.org/10.1051/matecconf/202337901005","url":null,"abstract":"Given the ever-increasing global demand for energy and the attention to be paid to environmental issues and climate change, research is developing more and more about new cold production technologies using renewable sources or recovery. This cooling demand is mainly covered by technologies conventional machines, in particular vapor compression machines, which leads to a high increased demand for electricity. In this context, absorption systems (Herold et al. 2016), lend themselves well to the recovery of heat at low temperature for the production of cold. The advantage of these machines is that the mechanical compression is replaced by a compression thermochemical that uses heat. Although characterized by a low level of maturity technology (TRL 3-4), an even more ambitious study concerns combined systems based on exploitation of thermal energy at low temperatures, in which electrical power and cooling are produced in the same cycle. The present work focuses on the analysis of a pilot installation (Figure 1) of combined production cooling and electricity (CFE) in parallel, from a low temperature source [80 -150°C] and from maximum thermal power of the generator 15 kW.","PeriodicalId":18309,"journal":{"name":"MATEC Web of Conferences","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87730587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Biohydrogen production: A new controllability criterion for analyzing the impacts of dark fermentation conditions 生物制氢:暗发酵条件影响分析的可控性新标准

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202337701010

Emmanuel Yahaya, J. Nandong, Wan sieng Yeo

引用次数: 0

The application of a curing front model to simulate healing in a cementitious microbial system 应用固化前沿模型模拟胶凝微生物系统的愈合

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202337809001

A. Jefferson, B. Freeman

引用次数: 0

Evaluation of microstructure and mechanical behavior of Aluminum 2024 and Stainless steel 304 GTAW joints 铝合金2024与不锈钢304 GTAW接头组织与力学性能评价

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202338102007

Asad Ali, Muhammad Jawad, M. Jahanzaib

引用次数: 0

Simulation and Analyses of Turbulent Flow in Different Phases of Stenosed Renal Artery 肾动脉狭窄不同阶段湍流的模拟与分析

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202338101004

Z. Zia, Faisal Ami, Mudasir Hussain, Zia ur Rehman, Shahazadi Arzak Semab

{"title":"Simulation and Analyses of Turbulent Flow in Different Phases of Stenosed Renal Artery","authors":"Z. Zia, Faisal Ami, Mudasir Hussain, Zia ur Rehman, Shahazadi Arzak Semab","doi":"10.1051/matecconf/202338101004","DOIUrl":"https://doi.org/10.1051/matecconf/202338101004","url":null,"abstract":"This study concerns the two-dimensional structure computational results of renal artery stenosis. In this paper, the turbulent flow of the stenosed vessel is stimulated and correlates the different stages of stenosis with each other. As we know that the blood flow in most blood vessels is laminar, but in case of stenosed vessel, the blood flow becomes turbulent; this is due to the blockage that blood does not flow linearly and produces chaos. Several liquid parameters are analyzed, such as pressure, velocity, turbulence kinetic energy, density, and shear rate. The inlet and outlet flow are especially concerning. For this purpose, we explored the stenosed behavior by the software COMSOL Multiphysics which provided us with a complete examination of the Computational fluid dynamics. With an increase in renal artery stenosis, there is a decrease in the blood flow which will automatically affect the pressure of the blood and can cause serious kidney diseases and, in some cases, permanent damage to the kidney sometimes. This paper highlights the early stages of renal artery stenosis, which are likely to be cured. Also, it shows the behavior of the severe late stages, which we consider nearly impossible to cure. The result explains that how different parameters vary according to stated cases.","PeriodicalId":18309,"journal":{"name":"MATEC Web of Conferences","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81033577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 looseness characteristics of bolted joints of transmission towers under lateral vibration 横向振动作用下输电塔螺栓连接松动特性研究

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202338201032

Binrong Zhu, G. Huang, Zhigang Su, Bin Chen, Hailin Liao

引用次数: 0

Investigation of Membrane Emulsification for the Scaled Production of Microcapsules for Self-sealing Cementitious Systems 自密封胶凝系统微胶囊规模化生产的膜乳化研究

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202337802010

Claire Riordan, D. Palmer, A. Al-Tabbaa

{"title":"Investigation of Membrane Emulsification for the Scaled Production of Microcapsules for Self-sealing Cementitious Systems","authors":"Claire Riordan, D. Palmer, A. Al-Tabbaa","doi":"10.1051/matecconf/202337802010","DOIUrl":"https://doi.org/10.1051/matecconf/202337802010","url":null,"abstract":"Capsule-based self-sealing in cementitious systems is an advantageous methodology which has the potential to decrease water ingress and thus enhance a system’s durability and extend its lifespan. If capsule-based self-sealing is to be considered as an industrial solution, production must be scaled while capsule quality and batch reproducibility are maintained. In this study, polyurethane-shelled microcapsules containing a commercially available water repellent agent were produced using membrane emulsification equipment, supplied by Micropore Technologies, followed by interfacial polymerisation. Production was scaled across three different cross-flow membrane emulsification devices, the AXF-1, the AXF-3, and the AXF-4, increasing production output to a maximum of 850 L/hr of capsule suspension. Following production, capsules were characterised, measuring average size and size distribution, as well as integrated into a cementitious matrix. The results highlight the key parameters that govern capsule size, the versatility of the equipment, and the consistent quality of capsules produced. It is hoped that this scaled production of capsules will help to develop the commercial viability of capsule-based self-sealing cementitious systems.","PeriodicalId":18309,"journal":{"name":"MATEC Web of Conferences","volume":"166 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83327959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

High catalyst performance of two-dimensional Ti3B3N3S6 for hydrogen evolution reaction 二维Ti3B3N3S6对析氢反应具有较高的催化性能

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202338201005

Yongxiu Sun, Zhijie Li

{"title":"High catalyst performance of two-dimensional Ti3B3N3S6 for hydrogen evolution reaction","authors":"Yongxiu Sun, Zhijie Li","doi":"10.1051/matecconf/202338201005","DOIUrl":"https://doi.org/10.1051/matecconf/202338201005","url":null,"abstract":"Single-atom catalysts (SACs) for the hydrogen evolution reaction (HER) is an efficient electrochemical pathway to produce the green production. However, the development of HER process is hampered by the lack of high-performance electrocatalysts. In this work, we proposed a new π-d conjugated structure of the Ti3B3N3S6 monolayer as the single-atom catalysts for the HER process by using the density functional theory (DFT) calculations. The calculated results show that the Ti atom is active site of the Ti3B3N3S6 monolayer with the high catalytic activity (ΔGH = –0.14 eV) for HER. The electronic properties of the Ti3B3N3S6 monolayer were explored by the electron localization function (ELF), Bader charge analysis and the polarized density of states (PDOS) density analysis. The Ti3B3N3S6 monolayer can promote the electronic transfer during the HER process, which indicates taht the Ti3B3N3S6 monolayer can is considered to investigate the catalytic activity for HER. The Gibbs free energy of H atoms adsorption on the Ti3B3N3S6 monolayer is –0.14 eV. Furthermore, the origin of high catalytic activity for the Ti3B3N3S6 monolayer was explored by the analysis the PDOS of the H adsorption on the Ti3B3N3S6 monolayer. Therefore, our work propose a new and high catalytic single-atom catalyst for the HER.","PeriodicalId":18309,"journal":{"name":"MATEC Web of Conferences","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88669107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0