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Fragmentation of fuel pellets during transport via a belt conveyor:A design of experiment study

Particuology 2022年第7期20卷 29-37页

作者： Hamid Gilvari Coen H.H.van Battum Richard Farnish Yusong Pang Wiebren de Jong Dingena L.Schott Section of Transport Engineering and Logistics Department of Maritime&Transport TechnologyFaculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyThe Netherlands Wolfson Centre for Bulk Solids Handling Technology Faculty of Engineering&ScienceUniversity of GreenwichUnited Kingdom Section of Large Scale Energy Storage(LSE) Department of Process&EnergyFaculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyThe Netherlands

This work investigates the proportion of generated fines in a pilot-scale experiment using a belt conveyor and commercial fuel *** this,a belt conveyor with a length of 3.1 m was used and operated at varying conditions:speeds,percentages of material loading on the belt,two combinations of the inclination angle of the belt and the falling height,and a different number of handling *** considered a design of experiments approach based on response surface methodology to investigate the effect of different conditions on the potential of fines ***,a comparison between the results of the belt conveyor and three common benchmark experimental approaches(tumbling box,rotary impact tester,and mechanical compression test)was *** show that the number of handling steps and the combined effect of drop height and inclination angle directly affected the fines ***,the tested belt speed range and the level of loading were of lower significance.A polynomial quadratic model was derived based on the regression analysis and showed a high accuracy to predict the proportion of ***,the tumbling box method showed good potential to predict the proportion of fines in a belt conveyor when transported several times.

关键词： Fuel pellets Breakage Belt conveyor transport Design of experiment Box–Behnken design

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Pipe Belt Conveyor Systems: An Update on Operational Performance 14

Pipe Belt Conveyor Systems: An Update on Operational Perform...

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14th International Conference on Bulk Materials Storage, Handling and transportation, ICBMH 2023

作者： Lodewijks, Gabriel Pang, Yusong School of Engineering University of Newcastle CallaghanNSW2308 Australia Section Transport Engineering and Logistics Delft University of Technology Mekelweg 2 Delft2628 CD Netherlands

ISBN: (纸本)9781925627831

Over the last decennia, many closed belt conveyor systems, like pipe conveyors, have been installed. Several DIN and ISO standards give guidance for checking the quality of the conveyor belt during the manufacturing process. Although there is not always a direct link between the test results of a specific DIN test and the actual operational conditions, like for example with the belt abrasion tests (DIN 53516), the DIN test results are generally accepted as a proof of quality of the belt if the results exceed the minimum requirements. With closed belt conveyor systems, a clear link between operational performance and the belt quality is missing. This is an issue because the belt’s characteristics play an even larger role in the operational performance of the system when compared to conventional trough conveyors. In particular the belt’s lateral stiffness is a crucial characteristic. If the belt is too stiff, then the indentation rolling resistance will be (too) high. If the belt is not stiff enough, then the pipe may collapse during operation seriously reducing the capacity of the system. This paper will discuss the results of inspections of belting for closed conveyor systems in relation to the system’s operational performance. Case studies will be discussed, and practical guidelines will be given. © 2023 The Institution of Engineers, Australia.

关键词： Belt conveyors

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Multi-Source Domain Adaptation Method of Mill Load Based on Common and Special Characteristics 42

Multi-Source Domain Adaptation Method of Mill Load Based on ...

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42nd Chinese Control Conference, CCC 2023

作者： Liu, Yiwen Yan, Gaowei Li, Rong Pang, Yusong Qiao, Tiezhu School of Electrical and Power Engineering Taiyuan University of Technology Taiyuan030024 China Delft University of Technology Section of Transport Engineering and Logistics Netherlands School of Physics and Optoelectronics Taiyuan University of Technology Taiyuan030024 China

ISBN: (纸本)9789887581543

In the grinding industry, accurate prediction of the mill load is the key to increasing mill income and reducing mill failure. It is difficult to improve the prediction accuracy of the model due to insufficient information on single-source domain data and distribution differences among different data. A multi-source domain unsupervised domain adaptation method based on common and special features is proposed. Multi-source domain data has both common and special characteristics. If only common features are emphasized, some useful information will be discarded. If only special features are used, the model generalization is not good. To solve this problem, a common feature extraction block is used to extract the common domain invariant representation of multiple source domains and target domains, and special features are obtained through the special feature extraction block. After the features are fused and input into the common regressor, the multi-source domain predicted values are obtained. Finally, the predicted values of multiple source domains are added and averaged to get the final prediction result. The effectiveness of this method is proved by cross-experiments on the ball mill data set collected in the laboratory. © 2023 Technical Committee on Control Theory, Chinese Association of Automation.

关键词： Ball mills

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Large-scale transportation and storage of wood pellets:Investigation of the change in physical properties

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Particuology 2021年第4期19卷 146-156页

作者： Hamid Gilvari Coen H.H.van Battum Simon A.van Dijk Wiebren de Jong Dingena L.Schott Section of Transport Engineering and Logistics Department of Maritime and Transport TechnologyFaculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyThe Netherlands Chemical Services Uniper Benelux NVThe Netherlands Section of Large Scale Energy Storage Department of Process&EnergyFaculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyThe Netherlands

The change in physical properties of wood pellets,with a focus on particle size distributions due to pellet breakage and attrition,was studied in a large-scale(∼450 ton/h)transportation *** locations with a high probability of breakage through the whole transportation system were chosen and sampled to study the effect of transportation system design and operation on the mechanical properties of *** density,mechanical durability,moisture content,and particle size distribution of pellets were characterized for each *** of variance showed that there were significant differences between the percentages of small particles(<5.6 mm)in the samples taken at different locations,especially at one with a vertical free fall of 7.8 *** average,this relatively long drop increased the proportion of particles<5.6 mm in the samples from 8.73%to 14.09%,and that of particles<3.15 mm from 4.82%to 9.01%.Moreover,the measurements showed a wide deviation in the mechanical durability values,between a minimum of 90.8%and a maximum of 98.7%,which were not correlated to the sampling points but related to pellet *** can be concluded that pellet transportation systems require more dedicated design strategies to prevent breakage and attrition.

关键词： Wood pellets Large-scale transportation Durability Fines and dust Breakage Mechanical degradation

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Analytical and Experimental Investigation on the Resistance of Vertical Plug Flow with Coarse Particles

SSRN

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SSRN 2024年

作者： Liu, Xiangwei Yang, Shuhao Pang, Yusong Logistics Engineering College Shanghai Maritime University No. 1550 Haigang Road Shanghai201306 China Section Transport Engineering and Logistics Department Maritime and Transport Technology Faculty Mechanical Engineering Delft University of Technology Mekelweg 2 Delft2628 CD Netherlands

Deep-sea mining receives increasing attention in recent years. A novel hydraulic-mechanical hybrid vertical lifting system is proposed for deep-sea mining, for which prediction of the resistance of vertical plug flow is critical. This paper aims to develop an analytical model for the resistance of vertical plug flow with coarse particles. A model for stress transmission ratio was verified and applied in current resistance model. In addition, both turbulent flow and laminar flow is considered to co-exist for fluid flowing through particles plugs to provide necessary pressure gradient. A test setup was built to measure the resistance of vertical plug flow with/without water, along with various parameters such as the particle diameter, plug length, and pressure gradient. Comparisons between predictions from the analytical model and experimental measurements show that the average deviation was less than 13.6%. Therefore, the proposed analytical model is verified and can be used for the prediction of the resistance of vertical plug flow with coarse particles. © 2024, The Authors. All rights reserved.

关键词： Analytical models

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Multi-source Domain Adaptation Method of Mill Load Based on Common and Special Characteristics

Multi-source Domain Adaptation Method of Mill Load Based on ...

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第42届中国控制会议

作者： Yiwen Liu Gaowei Yan Rong Li Yusong Pang Tiezhu Qiao School of Electrical and Power Engineering Taiyuan University of Technology Section of Transport Engineering and Logistics Delft University of Technology School of Physics and Optoelectronics Taiyuan University of Technology

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Improving Energy Efficiency of Belt Conveying System by Controlling Transient Operation Sequence 14

Improving Energy Efficiency of Belt Conveying System by Cont...

引用

14th International Conference on Bulk Materials Storage, Handling and transportation, ICBMH 2023

作者： Pang, Yusong Qiao, Tiezhu Yan, Gaowei Lodewijks, Gabriel Section Transport Engineering and Logistics Delft University of Technology Mekelweg 2 Delft2628 CD Netherlands Engineering Research Centre for Measuring and Controlling Technology and Advanced Transducers Taiyuan University of Technology 79 Yingze W Ave Taiyuan030024 China College of Electrical and Power Engineering Taiyuan University of Technology 79 Yingze W Ave Taiyuan030024 China School of Engineering University of Newcastle NewcastleNSW2300 Australia

ISBN: (纸本)9781925627831

Speed control is a proven technology to reduce the energy consumption of large scale belt conveyors when the loaded material flow varies. Researches in the past decades mainly focused on developing energy saving models and strategies for speed control aiming at the energy efficiency of single conveyor. There is still the lack of applying speed control taking the transient operations into account when a belt conveying system is composed of multiple cascaded conveyors. The transient operations of a belt conveyor include the normal operational start and stop, the emergency stop and especially the acceleration or deceleration operations between neighbouring stationary operations. In view of the status that belt conveyors in most coal mines are started according to the reverse direction of the coal flow, this paper presents a method to control the transient operation sequence of cascaded conveyors to improve the energy efficiency of the entire belt conveying system. Besides the novel strategy of controlling the start-up procedure of multi-level conveyors along with the transport direction of material flow to reduce the time of empty loading operations, a ladder matching function is developed to avoid frequent acceleration during speed control. The control method is implemented and the improved energy efficiency is shown by the simulation results based on a case study of a 5-level belt conveying system in a defined operational scenario. © 2023 The Institution of Engineers, Australia.

关键词： Belt conveyors

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Multi-Source Domain Adaptation Method of Mill Load Based on Common and Special Characteristics

Multi-Source Domain Adaptation Method of Mill Load Based on ...

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Chinese Control Conference (CCC)

作者： Yiwen Liu Gaowei Yan Rong Li Yusong Pang Tiezhu Qiao School of Electrical and Power Engineering Taiyuan University of Technology Taiyuan Section of Transport Engineering and Logistics Delft University of Technology Netherlands School of Physics and Optoelectronics Taiyuan University of Technology Taiyuan

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End-consumer preferences for e-purchase delivery location

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transportation Research Procedia 2025年 86卷 191-198页

作者： Olesia Hriekova Antonio Comi Lóránt Tavasszy Department of Enterprise Engineering University of Rome Tor Vergata via del Politecnico 1 00133 Rome Italy O.M. Beketov National University of Urban Economy in Kharkiv Chornohlazivska Street 17 61002 Kharkiv Ukraine Section Transport and Logistics Faculty of Technology Policy and Management Delft University of Technology 2628 BX Delft The Netherlands

The e-commerce growth trend has great potential to influence both the nature and the dimension of the challenges policymakers will face in the near future. In this sense, the purchasing habits of the end consumer have undergone a significant change with the development of the emerging information and communication technologies that impact on the purchase behaviour and the way of receiving the item bought. The goal of the paper is thus to analyse cutting-edge last mile delivery alternatives while looking at the characteristics that determine the preferred alternative for receiving e-purchases. The identified new alternatives besides traditional mail are: crowdshipping, delivery to the car trunk, delivery by autonomous delivery robots, unattended parcel locker, attended pick up point and click-and-collect service. The paper presents the methodology for designing and delivering, as well as the findings of a survey carried out for investigating users’ behaviour, after reviewing the key attributes and levels that influence end consumers in choosing how to receive their e-purchases.

关键词： last mile end consumer e-delivery alternative e-delivery attribute stated preference survey city logistics

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An economically-consistent discrete choice model with flexible utility specification based on artificial neural networks

arXiv

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arXiv 2024年

作者： Hernández, José Ignacio Mouter, Niek van Cranenburgh, Sander Faculty of Economics and Government Universidad San Sebastián Lientur 1457 Concepción Chile Transport and Logistics Section Department of Engineering Systems and Services Faculty of Technology Policy and Management Delft University of Technology Jaffalaan 5 Delft2628BX Netherlands Populytics. Research Agency Frambozenweg 139 Leiden2321KA Netherlands

Random utility maximisation (RUM) models are one of the cornerstones of discrete choice modelling. However, specifying the utility function of RUM models is not straightforward and has a considerable impact on the resulting interpretable outcomes and welfare measures. In this paper, we propose a new discrete choice model based on artificial neural networks (ANNs) named "Alternative-Specific and Shared weights Neural Network (ASS-NN), which provides a further balance between flexible utility approximation from the data and consistency with two assumptions: RUM theory and fungibility of money (i.e., "one euro is one euro"). Therefore, the ASS-NN can derive economically-consistent outcomes, such as marginal utilities or willingness to pay, without explicitly specifying the utility functional form. Using a Monte Carlo experiment and empirical data from the Swissmetro dataset, we show that ASS-NN outperforms (in terms of goodness of fit) conventional multinomial logit (MNL) models under different utility specifications. Furthermore, we show how the ASS-NN is used to derive marginal utilities and willingness to pay measures. © 2024, CC BY-NC-ND.

关键词： Neural networks

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