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Applicability of a Spinning Disk Apparatus for the Investigation of Particulate Fouling 研究微粒污垢的旋转盘仪器的适用性
IF 1.5 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2024-07-10 DOI: 10.1002/cite.202400001
Dr. Annika Klinkert, Dr. Hannes Deponte, Dr. Nathalie Gottschalk, Dr. Wolfgang Augustin, Prof. Stephan Scholl
{"title":"Applicability of a Spinning Disk Apparatus for the Investigation of Particulate Fouling","authors":"Dr. Annika Klinkert,&nbsp;Dr. Hannes Deponte,&nbsp;Dr. Nathalie Gottschalk,&nbsp;Dr. Wolfgang Augustin,&nbsp;Prof. Stephan Scholl","doi":"10.1002/cite.202400001","DOIUrl":"10.1002/cite.202400001","url":null,"abstract":"<p>The applicability of a fluidically heated spinning disk apparatus (SDA) was tested for investigating the influence of the tangential velocity on the deposition of particulate material systems, in particular on latex particles. First, the SDA was characterized for particle fouling investigations with micro glass beads as a model system, then, a first series of tests was carried out with a real material system, a vinyl acetate/Versa 10 copolymer. Experiments were performed for a duration of 1 h and a tangential velocity up to 0.3 m s<sup>−1</sup>. The fouling process was characterized by the local fouling layer thickness and the calculated local mass-based fouling resistance. A decrease in fouling resistance along the radius of the rotating disk as a function of the tangential velocity was observed.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141587738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
A Correlation‐Based Prediction Method of Heat Transfer Coefficients for Flooded Evaporation on Enhanced Tubes 基于相关性的强化管上淹没式蒸发传热系数预测方法
IF 1.9 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2024-07-09 DOI: 10.1002/cite.202300149
Marco Möhrle, Jennifer Frick, Christoph Krieger, Karsten Müller
{"title":"A Correlation‐Based Prediction Method of Heat Transfer Coefficients for Flooded Evaporation on Enhanced Tubes","authors":"Marco Möhrle, Jennifer Frick, Christoph Krieger, Karsten Müller","doi":"10.1002/cite.202300149","DOIUrl":"https://doi.org/10.1002/cite.202300149","url":null,"abstract":"Heat transfer in evaporation units play a vital role in the design and optimization of heat pumps and refrigeration systems. Existing correlations are often limited to the respective heat transfer surface. Furthermore, the majority of correlations reported have a lack of reliable validation beyond the test of their ability to describe the data they have been fitted to. In the present study, the heat transfer in case of flooded evaporation on an enhanced tube was examined for two refrigerants and propane. The experimentally measured data were used to develop a new correlation for the shell‐side heat transfer. The correlation was assessed on a separate test set, not utilized in the process of model development. The correlation and procedure are reliable and transferable tools for estimation of heat transfer in enhanced tube evaporators for refrigerants.","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141577882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Multidimensional Scenario Calculations Using Cloud-Based Co-Simulation 利用基于云的协同模拟进行多维场景计算
IF 1.5 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2024-07-09 DOI: 10.1002/cite.202400026
Dr.-Ing. Thorsten Wack, Dipl.-Ing. Andreas Schröder
{"title":"Multidimensional Scenario Calculations Using Cloud-Based Co-Simulation","authors":"Dr.-Ing. Thorsten Wack,&nbsp;Dipl.-Ing. Andreas Schröder","doi":"10.1002/cite.202400026","DOIUrl":"10.1002/cite.202400026","url":null,"abstract":"<p>As part of the joint research project Carbon2Chem<sup>®</sup>, mathematical models are used to simulate operating scenarios of cross-industry networks, in particular chemical plants in industrial environments with high CO<sub>2</sub> emissions. In this context, a cloud-based distributed co-simulation is used to enable the parallelized simulation of a large number of different variants. This enables optimal design of the plant networks and the efficient determination of optimal operating conditions. The architecture of this approach is described, and its performance is examined and evaluated.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Carbon Management – From Vision to Industrial Application 碳管理--从愿景到工业应用
IF 1.5 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2024-07-08 DOI: 10.1002/cite.202400067
Dr.-Ing. Torsten Müller
{"title":"Carbon Management – From Vision to Industrial Application","authors":"Dr.-Ing. Torsten Müller","doi":"10.1002/cite.202400067","DOIUrl":"10.1002/cite.202400067","url":null,"abstract":"<p>Carbon is a key element in industrial production, but CO<sub>2</sub> is also a greenhouse gas whose release into the atmosphere must be avoided. If its generation cannot be avoided for process-related reasons, then a comprehensive carbon management is required to enable climate-neutral production in industry. In the Carbon2Chem<sup>®</sup> project, partners from industry and science are successfully researching technical components that enable the implementation of concepts for CO<sub>2</sub> capture and utilization (CCU) as part of carbon management.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400067","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141578048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Case Study: Flipped Classroom with Gamification in a Hybrid Fluid Mechanics Course 案例研究：流体力学混合课程中的游戏化翻转课堂
IF 1.9 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2024-07-05 DOI: 10.1002/cite.202300237
Konrad E. R. Boettcher, Michael‐David Fischer, Justus Hellmich
{"title":"Case Study: Flipped Classroom with Gamification in a Hybrid Fluid Mechanics Course","authors":"Konrad E. R. Boettcher, Michael‐David Fischer, Justus Hellmich","doi":"10.1002/cite.202300237","DOIUrl":"https://doi.org/10.1002/cite.202300237","url":null,"abstract":"A fluid mechanics course in process engineering designed according to the students’ wishes mixes lecture and exercise in co‐teaching and flipped‐classroom elements with gamification. The effectiveness increases as the number of points achieved in the exam increases by 31.9 % compared to the average of the four previous years. The withdrawal rate drops from 54.8 % to 17.4 % and the failure rate from 38.7 % to 23.7 %, which enhances efficiency. The students’ self‐report shows a better preparation to the course sessions, but they do not feel stressed much additionally. About 80 % of the initially attending students participate at the end of the course.","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Separation of Brick Particles from the Sand Fraction of Masonry Construction and Demolition Waste on the Basis of Their Magnetic Susceptibility 根据磁感应强度从砖石建筑和拆除废物的砂粒中分离砖粒
IF 1.9 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2024-07-05 DOI: 10.1002/cite.202300204
Anett Lipowsky, Jenny Götz, Anette Müller, Ulrich Palzer
{"title":"Separation of Brick Particles from the Sand Fraction of Masonry Construction and Demolition Waste on the Basis of Their Magnetic Susceptibility","authors":"Anett Lipowsky, Jenny Götz, Anette Müller, Ulrich Palzer","doi":"10.1002/cite.202300204","DOIUrl":"https://doi.org/10.1002/cite.202300204","url":null,"abstract":"In the processing of construction waste, the sorting of the delivered mixtures is one of the decisive process steps in order to produce recyclates that can be reused. In the fine‐grain range, there is a lack of suitable processes for this. A procedure that has not been investigated so far is to separate concrete‐mortar‐brick mixtures on the basis of the magnetic susceptibility. Based on measurements of the susceptibility, sorting experiments were carried out using a rare earth roll magnetic separator. The positive results of the experiments described here call for further investigation of the performance of the sorting method.","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Crystallization Fouling on Column Internals using a Screening Test Rig 利用筛分试验装置调查色谱柱内部的结晶堵塞情况
IF 1.5 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2024-07-04 DOI: 10.1002/cite.202300219
Korbinian Inderwies, Jürgen Kappes, Prof. Dr.-Ing. Harald Klein, Dr.-Ing. Sebastian Rehfeldt
{"title":"Investigation of Crystallization Fouling on Column Internals using a Screening Test Rig","authors":"Korbinian Inderwies,&nbsp;Jürgen Kappes,&nbsp;Prof. Dr.-Ing. Harald Klein,&nbsp;Dr.-Ing. Sebastian Rehfeldt","doi":"10.1002/cite.202300219","DOIUrl":"10.1002/cite.202300219","url":null,"abstract":"<p>Fouling on column internals leads to many malfunctions in chemical processes every year. Despite the importance for the industry, only a few systematic studies exist on the fouling of column internals. Here, a new screening test rig is presented for the rapid and easy characterization of a wide range of internals with respect to their fouling tolerance. A countercurrent of saturated NaCl/water solution and air is used to force crystallization fouling. Photographs help to identify the initial points of fouling on two random packings and provide insights into the growth of deposits. In addition, the fouling tolerance of five different trays is investigated, demonstrating that trays with larger curtain area show greater fouling tolerance.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202300219","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Auswirkungen der Energiewende auf die Stromnetze Effects of Energy Transition on Power Grids 能源转型对电网的影响
IF 1.5 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2024-07-03 DOI: 10.1002/cite.202400051
Carsten Siebels
{"title":"Auswirkungen der Energiewende auf die Stromnetze\u0000 Effects of Energy Transition on Power Grids","authors":"Carsten Siebels","doi":"10.1002/cite.202400051","DOIUrl":"10.1002/cite.202400051","url":null,"abstract":"<p>The energy transition in Germany requires a high amount of new wind turbines and photovoltaic power for supply of new electricity consumers for heat and traffic. In addition, high electricity demand for production of hydrogen has to be supplied. The corresponding planning for transmission system extension does not take into account economic and environmental burden. As an alternative to the planned oversized transmission grid extension, a second bidding zone for Germany is suggested.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Aspekte der Energiewende. Teil 3: Energieszenarien für eine vollständig defossilisierte deutsche Energieversorgung Aspects of the Energy Transition. Part 3: Energy Scenarios for a Fully Defossilized German Energy Supply 能源转型的各个方面。第 3 部分：完全化石能源供应的德国能源方案
IF 1.5 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2024-07-03 DOI: 10.1002/cite.202300195
Dr. Otto Machhammer, Carsten Siebels
{"title":"Aspekte der Energiewende. Teil 3: Energieszenarien für eine vollständig defossilisierte deutsche Energieversorgung\u0000 Aspects of the Energy Transition. Part 3: Energy Scenarios for a Fully Defossilized German Energy Supply","authors":"Dr. Otto Machhammer,&nbsp;Carsten Siebels","doi":"10.1002/cite.202300195","DOIUrl":"10.1002/cite.202300195","url":null,"abstract":"<p>Based on the scenario framework 2023‒2037/2045 [1] approved by the German Bundesnetzagentur für Elektrizität, Gas, Telekommunikation, Post und Eisenbahnen, a possible picture of the energy landscape for the case of a completely defossilized energy supply was drawn up with the help of hourly resolved producer and consumer profiles. On this basis, the question was addressed as to whether the hydrogen required for this should be produced domestically and how much decentralized, household-based seasonal storage would relieve the low-voltage grids. An estimate provides reference values for the financial expenditure and the area required to achieve this goal.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
An Experimental Approach to Overcome the Fouling Issue in Micro Heat Exchangers 克服微型热交换器结垢问题的实验方法
IF 1.5 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2024-07-03 DOI: 10.1002/cite.202400012
Felicitas Aselmeyer, Dr.-Ing. Christoph Spiegel, Dr.-Ing. Wolfgang Augustin, Prof. Dr.-Ing. Stephan Scholl
{"title":"An Experimental Approach to Overcome the Fouling Issue in Micro Heat Exchangers","authors":"Felicitas Aselmeyer,&nbsp;Dr.-Ing. Christoph Spiegel,&nbsp;Dr.-Ing. Wolfgang Augustin,&nbsp;Prof. Dr.-Ing. Stephan Scholl","doi":"10.1002/cite.202400012","DOIUrl":"10.1002/cite.202400012","url":null,"abstract":"<p>Micro heat exchangers improve heat and mass transfer compared to conventional heat exchangers, enabling more energy-efficient applications. However, their sensitivity to fouling limits broader industrial application. This approach presents a combined investigation of fouling and cleaning in microscale heat exchangers using two test rigs. Individual sets of analysis methods are developed to improve the understanding of heat and mass transfer on the microscale. In addition to known methods, such as pressure loss analysis, newly developed and established image analysis techniques are used to monitor fouling and cleaning. Based on the presented methods, it is possible to predict the initial position of thermally induced fouling and to demonstrate the applicability of automated cleaning on the microscale.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
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