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A Promising Topic in the Development of Electrical Engineering in the 21st Century ——Superconducting Technology in Electric Power System

Tang Yuejin,Li Jingdong,Duan Xianzhong,Cheng Shijie,Pan Yuan

Strategic Study of CAE 2000, Volume 2, Issue 4,   Pages 1-7

Abstract:

In the new century, people will extensively concern themselves with environment protection and natural resource saving. Their life style will be changed rapidly. Information system will become the most important part of our society. All of these will put forward the following challenging requirements to the electric power system for high economic characteristics, high reliability, high quality, high quantity and high density of power supply. As the conventional technology used in current power system is difficult to meet these requirements, breakthroughs of revolution in electrical technology is in urgent need. Superconducting technology is one of those breakthroughs. It is commonly recognized that superconducting technology will be widely used in the electric power system in the 21st century. This paper systematically analyzes the problems facing the electrical power industry in the 21st century and the potential of using superconducting technology in the future power system. The current states of applying superconducting technology to the electric power system are also overviewed.

Keywords： applied superconductivity     electric power system     environment and resources    

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Coordinate system applied to magnetic suspension project between Shanghai and Hangzhou

SHI Yimin, WANG Lihua, LUO Yan

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 288-292 doi: 10.1007/s11709-008-0041-7

Abstract: In order to satisfy the requirement for route location of a magnetic suspension project between Shanghai and Hangzhou, this paper proposes to adopt a new form of geodetic coordinate system, which is defined by meridians and parallel circles but with two coordinate parameters expressed by length. Not only the coordinate systems for route location along the whole line can be unified, but also the precision of lengths and angles obtained from simple formulas are very high and there are not any map projection distortions. This has been proven by calculation.

Keywords： requirement     projection     calculation     Shanghai     precision    

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Decomposition analysis applied to energy and emissions: A literature review

Frontiers of Engineering Management   Pages 625-639 doi: 10.1007/s42524-023-0270-4

Abstract: To this end, this study presents a literature survey for decomposition analysis applied to energy and

Keywords： index decomposition analysis     structural decomposition analysis     production decomposition analysis     energy     CO2 emissions    

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Modeling water and heat transfer in soil-plant-atmosphere continuum applied to maize growth under plastic

Meng DUAN, Jin XIE, Xiaomin MAO

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 2,   Pages 144-161 doi: 10.15302/J-FASE-2019258

Abstract: soil-plant-atmosphere continuum (SPAC), the model was improved by considering the effect of plastic film mulching applied

Keywords： film mulching     growth stage     leaf area index     maize growth     water and heat transfer    

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Unconventional hydrodynamics of hybrid fluid made of liquid metals and aqueous solution under applied

Xu-Dong ZHANG, Yue SUN, Sen CHEN, Jing LIU

Frontiers in Energy 2018, Volume 12, Issue 2,   Pages 276-296 doi: 10.1007/s11708-018-0545-3

Abstract: prospects and challenges are raised, offering an insight into the new physics of the hybrid fluid under applied

Keywords： liquid metal     hybrid fluid     hydrodynamics     surface tension     applied fields     self-actuation    

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Preliminary design of an SCO conversion system applied to the sodium cooled fast reactor

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 832-841 doi: 10.1007/s11708-021-0777-5

Abstract: The supercritical carbon dioxide (SCO2) Brayton cycle has become an ideal power conversion system for sodium-cooled fast reactors (SFR) due to its high efficiency, compactness, and avoidance of sodium-water reaction. In this paper, the 1200 MWe large pool SFR (CFR1200) is used as the heat source of the system, and the sodium circuit temperature and the heat load are the operating boundaries of the cycle system. The performance of different SCO2 Brayton cycle systems and changes in key equipment performance are compared. The study indicates that the inter-stage cooling and recompression cycle has the best match with the heat source characte-ristics of the SFR, and the cycle efficiency is the highest (40.7%). Then, based on the developed system transient analysis program (FR-Sdaso), a pool-type SFR power plant system analysis model based on the inter-stage cooling and recompression cycle is established. In addition, the matching between the inter-stage cooling recompression cycle and the SFR during the load cycle of the power plant is studied. The analysis shows that when the nuclear island adopts the flow-advanced operation strategy and the carbon dioxide flowrate in the SCO2 power conversion system is adjusted with the goal of maintaining the sodium-carbon dioxide heat exchanger sodium side outlet temperature unchanged, the inter-stage cooling recompression cycle can match the operation of the SFR very well.

Keywords： sodium-cooled fast reactor (SFR)     supercritical carbon dioxide (SCO2)     brayton cycle     load cycle    

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Process evaluation of an alternating aerobic-anoxic process applied in a sequencing batch reactor for

ZENG Wei, PENG Yongzhen, WANG Shuying

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 28-32 doi: 10.1007/s11783-007-0005-5

Abstract: and save operational cost, the feasibility of the alternating aerobic-anoxic process (AAA process) applied

Keywords： bicarbonate alkalinity     sufficient influent     influent alkalinity     detection     alkalinity production    

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High Energy Laser and The Problems of Applied Optics

Du Xiangwan

Strategic Study of CAE 2001, Volume 3, Issue 2,   Pages 21-24

Abstract: The paper discusses eight topics of applied optics related with high energy laser, such as high energy

Keywords： high energy laser     distance propagation     applied optics    

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Field scale measurement of greenhouse gas emissions from land applied swine manure

Devin L. Maurer, Jacek A. Koziel, Kelsey Bruning

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 3, doi: 10.1007/s11783-017-0915-9

Abstract: Assessment of GHG emissions from deep injected land-applied swine manure, fall and reapplication in theThe N O net cumulative flux represents 0.595% of nitrogen applied in swine manure for the fall trial.

Keywords： Climate change     Emissions     Greenhouse gases     Land application     Swine manure    

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Lignin-based polymer with high phenolic hydroxyl group content prepared by the alkyl chain bridging method and applied

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 8,   Pages 1075-1084 doi: 10.1007/s11705-022-2272-x

Abstract: Based on the excellent electron transporting property of PLS, PLS was applied as a dopant in poly(3,4

Keywords： lignosulfonate     phenolic group     PEDOT:PLS     hole extract layer     energy level    

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Comparative study of various artificial intelligence approaches applied to direct torque control of induction

Moulay Rachid DOUIRI, Mohamed CHERKAOUI

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 456-467 doi: 10.1007/s11708-013-0264-8

Abstract: In this paper, three intelligent approaches were proposed, applied to direct torque control (DTC) of

Keywords： adaptive neuro-fuzzy inference system (ANFIS)     artificial neural network     direct torque control (DTC)     fuzzy logic     induction motor    

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Blockchain applied to the construction supply chain: A case study with threat model

Gjorgji SHEMOV, Borja GARCIA de SOTO, Hoda ALKHZAIMI

Frontiers of Engineering Management 2020, Volume 7, Issue 4,   Pages 564-577 doi: 10.1007/s42524-020-0129-x

Abstract: The construction industry has long faced the challenge of introducing collaborative systems among multiple stakeholders. This challenge creates a high level of rigidity in terms of processing shared information related to different processes, robust holistic regulations, payment actualizations, and resource utilization across different nodes. The need for a digital platform to cross-connect all stakeholders is necessary. A blockchain-based platform is a prime candidate to improve the industry in general and the construction supply chain (CSC) in particular. In this paper, a literature review is presented to establish the main challenges that CSC faces in terms of its effects on productivity and efficiency. In addition, the effect of applying blockchain platforms on a case study is presented and analyzed from performance and security level. The analysis aims to emphasize that blockchain, as presented in this paper, is a viable solution to the challenges in the CSC regardless of the risks associated with the security and robustness of the flow of information and data protection. Moreover, a threat analysis of applying a blockchain model on the CSC industry is introduced. This model indicates potential attacks and possible countermeasures to prevent the attacks. Future work is needed to expand, quantify, and optimize the threat model and conduct simulations considering proposed countermeasures for the different blockchain attacks outlined in this study.

Keywords： blockchain taxonomy     construction supply chain     literature review     threat model analysis     security level analysis    

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Extended two-fluid model applied to analysis of bubbly flow in multiphase rotodynamic pump impeller

Zhiyi YU, Guoyu WANG, Shuliang CAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 53-59 doi: 10.1007/s11465-009-0006-0

Abstract: This paper presents an extended two-fluid model based on the Navier-Stokes equations and the standard turbulence model, to simulate the three-dimensional air-water bubbly flow in turbo machinery. In the governing equations, the drag force and added mass force are added and the additional source terms arising from fluctuations of gas volume fraction are considered. The discrete equations are solved using a developed two-phase semi-implicit method for pressure-linked equations, consistent (SIMPLEC) algorithm in body-fitted coordinates with a staggered grid system. Simulation is then carried out for the pure liquid flow and air-water two-phase flow with the inlet gas volume fraction being 15% in a multiphase rotodynamic pump impeller and the pump head performance is predicted. Comparison with experimental results shows the reliability and commonality of the numerical model.

Keywords： two-fluid model     multiphase rotodynamic pump     SIMPLEC algorithm     numerical simulation    

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Development of oxide based diffusion barrier coatings for CFC components applied in modern furnaces

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 392-396 doi: 10.1007/s11465-011-0241-z

Abstract:

Carbon fibre reinforced carbon (CFC) materials show a high potential for usage in furnaces as sample carriers for example, which is due to their excellent thermal stability compared to steel carriers. Only their tendency to react with different metals at high temperatures by C-diffusion is a disadvantage, which can be solved by application of diffusion barriers. In order to enable the utilization of CFC-carriers for e.g. brazing furnaces, within the frame of this study thermally sprayed diffusion barrier coatings were developed. Coatings of mullite and ZrO2-7%βY2O3 (YSZ) were prepared by air plasma spraying (APS). The coatings were investigated in terms of their microstructure and thermal shock behaviour. In order to prove the suitability of the coatings for the application in brazing furnaces, the wettability of the coating surfaces by a Ni-based brazing alloy was investigated. The results showed that both mullite and YSZ could be deposited on CFC substrates with a bond coat of W or SiC. Both coatings exhibited good thermal shock behaviour and an excellent non-wetting behaviour against the used Ni-based braze alloy.

Keywords： diffusion barrier coatings     carbon fibre reinforced carbon (CFC)     plasma spraying     microstructure     furnace    

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Comparison and modeling of two biofilm processes applied to decentralized wastewater treatment

Guanglei QIU, Yonghui SONG, Peng YUAN, Liancheng XIANG, Jianfeng PENG, Ping ZENG,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 4,   Pages 412-420 doi: 10.1007/s11783-009-0141-1

Abstract: China area, biological contact oxidation (BCO) process and biological aerated filter (BAF) process were applied

Keywords： biological contact oxidation     biological aerated filter     decentralized wastewater treatment     kinetic model    

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Title Author Date Type Operation

A Promising Topic in the Development of Electrical Engineering in the 21st Century ——Superconducting Technology in Electric Power System

Tang Yuejin,Li Jingdong,Duan Xianzhong,Cheng Shijie,Pan Yuan

Journal Article

Coordinate system applied to magnetic suspension project between Shanghai and Hangzhou

SHI Yimin, WANG Lihua, LUO Yan

Journal Article

Decomposition analysis applied to energy and emissions: A literature review

Journal Article

Modeling water and heat transfer in soil-plant-atmosphere continuum applied to maize growth under plastic

Meng DUAN, Jin XIE, Xiaomin MAO

Journal Article

Unconventional hydrodynamics of hybrid fluid made of liquid metals and aqueous solution under applied

Xu-Dong ZHANG, Yue SUN, Sen CHEN, Jing LIU

Journal Article

Preliminary design of an SCO conversion system applied to the sodium cooled fast reactor

Journal Article

Process evaluation of an alternating aerobic-anoxic process applied in a sequencing batch reactor for

ZENG Wei, PENG Yongzhen, WANG Shuying

Journal Article

High Energy Laser and The Problems of Applied Optics

Du Xiangwan

Journal Article

Field scale measurement of greenhouse gas emissions from land applied swine manure

Devin L. Maurer, Jacek A. Koziel, Kelsey Bruning

Journal Article

Lignin-based polymer with high phenolic hydroxyl group content prepared by the alkyl chain bridging method and applied

Journal Article

Comparative study of various artificial intelligence approaches applied to direct torque control of induction

Moulay Rachid DOUIRI, Mohamed CHERKAOUI

Journal Article

Blockchain applied to the construction supply chain: A case study with threat model

Gjorgji SHEMOV, Borja GARCIA de SOTO, Hoda ALKHZAIMI

Journal Article

Extended two-fluid model applied to analysis of bubbly flow in multiphase rotodynamic pump impeller

Zhiyi YU, Guoyu WANG, Shuliang CAO

Journal Article

Development of oxide based diffusion barrier coatings for CFC components applied in modern furnaces

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

Journal Article

Comparison and modeling of two biofilm processes applied to decentralized wastewater treatment

Guanglei QIU, Yonghui SONG, Peng YUAN, Liancheng XIANG, Jianfeng PENG, Ping ZENG,

Journal Article