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Performance design of a cryogenic air separation unit for variable working conditions using the lumped

Jinghua XU, Tiantian WANG, Qianyong CHEN, Shuyou ZHANG, Jianrong TAN

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 1,   Pages 24-42 doi: 10.1007/s11465-019-0558-6

Abstract: petrochemical and semiconductor industries, are being developed with high operating elasticity under variableworking conditions.basis of material and energy conservation laws, the piecewise-lumped parameters are extracted under variableworking conditions by using LPM.working conditions.

Keywords： performance design     air separation unit (ASU)     lumped parameter model (LPM)     variable working conditions    

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Characteristics Analysis of Integrated CAES and CFPP Trigeneration System Considering Working Conditions

Jiajia Li,Peigang Yan,Guowen Zhou,Xingshuo Li,Qiang Li,Jinfu Liu,Daren Yu,

Engineering doi: 10.1016/j.eng.2023.06.015

Abstract: Considering the working conditions of the CFPP, thermal characteristics of three typical operation modesthe benefit produced by integration is further enhanced when the CFPP operates at higher operating conditions

Keywords： Compressed air energy storage     CFPP–CAES combined cycle     Thermodynamic performance     Technical economics    

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Model design of static experiment for the middle tower of multispan suspension bridge based on actual workingconditions

Ji Lin,Wang Tao and Wu Hanliang

Strategic Study of CAE 2012, Volume 14, Issue 5,   Pages 66-70

Abstract: multispan suspension bridges have several different characteristics, such as the constraints, service conditionspaper, a small-scale model was designed for the middle tower of Taizhou Bridge, based on its actual workingconditions.

Keywords： suspension bridge     middle tower     actual working conditions     similarity theory     numerical simulation     model    

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Properties of photosynthesis and spectral reflectance in leaves of maize under the low and variable waterconditions

Sun Li,Su Gengqiang,Liu Yanmei,Zhao Yanyan and Shi Gangrong

Strategic Study of CAE 2012, Volume 14, Issue 3,   Pages 70-75

Abstract:

The present study was carried out to examine the effects of low and variablewater conditions on plant biomass, root to shoot ratio, chlorophyll fluorescence, gas exchange and spectralUnder the low and variable water conditions, plant growth was inhibited, however, the root to shoot ratiophotosynthesis and spectral reflectance might be an important mechanism for maize to adapt the low and variablewater conditions.

Keywords： Maize     low and variable water conditions     chlorophyll fluorescence     gas exchange     spectral reflectance    

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Tacholess order-tracking approach for wind turbine gearbox fault detection

Yi WANG, Yong XIE, Guanghua XU, Sicong ZHANG, Chenggang HOU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 427-439 doi: 10.1007/s11465-017-0452-z

Abstract:

Monitoring of wind turbines under variable-speed operating conditions has become an important issuetransmission unit; it generally exhibits complex vibration signatures due to random variations in operating conditionsbased on a stationary assumption and thus inapplicable to the fault diagnosis of wind turbines under variable-speedoperating conditions.

Keywords： wind turbine     variable-speed operating conditions     Vold-Kalman filtering     tacholess order tracking    

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Two-level uncapacitated lot-sizing problem considering the financing cost of working capital requirement

Yuan BIAN, David LEMOINE, Thomas G. YEUNG, Nathalie BOSTEL

Frontiers of Engineering Management 2020, Volume 7, Issue 2,   Pages 248-258 doi: 10.1007/s42524-019-0069-5

Abstract: Working capital requirement (WCR) has been recognized as a key factor for releasing tied up cash in companies

Keywords： two-level ULS problem     lot-sizing     working capital requirement     ZIO property     infinite production capacity    

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A method to calculate working capacity space of multi-DOF manipulator and the application in excavating

Baochen WEI, Feng GAO

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2,   Pages 109-119 doi: 10.1007/s11465-012-0323-6

Abstract:

Working capacity refers to the velocity output and force output of a manipulator.In this paper, the method of Linear Programming and a geometric method are proposed to calculate working

Keywords： working capacity     multi-DOF manipulator     capacity polytope     excavating mechanism    

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Analysis of planetary gear transmission in non-stationary operations

Fakher CHAARI, Mohamed Slim ABBES, Fernando Viadero RUEDA, Alfonso Fernandez del RINCON, Mohamed HADDAR

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 1,   Pages 88-94 doi: 10.1007/s11465-013-0361-8

Abstract:

Planetary gearboxes operate usually in non-stationary conditions generated mainly by variable loadsIn order to understand the dynamic behavior of planetary gearboxes in such conditions, a mathematic modelThe variability of load induces a variable speed of the transmission which is taken into account when

Keywords： planetary gearbox     non-stationary conditions     variable load     dynamic response     time frequency analysis    

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Unit commitment using dynamic programming–an exhaustive working of both classical and stochastic approach

Balasubramaniyan SARAVANAN, Surbhi SIKRI, K. S. SWARUP, D. P. KOTHARI

Frontiers in Energy 2013, Volume 7, Issue 3,   Pages 333-341 doi: 10.1007/s11708-013-0259-5

Abstract: In the present electricity market, where renewable energy power plants have been included in the power systems, there is a lot of unpredictability in the demand and generation. There are many conventional and evolutionary programming techniques used for solving the unit commitment (UC) problem. Dynamic programming (DP) is a conventional algorithm used to solve the deterministic problem. In this paper DP is used to solve the stochastic model of UC problem. The stochastic modeling for load and generation side has been formulated using an approximate state decision approach. The programs were developed in a MATLAB environment and were extensively tested for a four-unit eight-hour system. The results obtained from these techniques were validated with the available literature and outcome was good. The commitment is in such a way that the total cost is minimal. The novelty of this paper lies in the fact that DP is used for solving the stochastic UC problem.

Keywords： unit commitment (UC)     deterministic     stochastic     dynamic programming (DP)     optimization     state diagram    

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Mechanical design, modeling, and identification for a novel antagonistic variable stiffness dexterous

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0691-5

Abstract: This study traces the development of dexterous hand research and proposes a novel antagonistic variablefinger mechanism not only achieves passive compliance against physical impacts, but also implements the variable

Keywords： multifingered hand     mechanism design     robot safety     variable stiffness actuator    

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Effect of variable heat capacities on performance of an irreversible Miller heat engine

Xingmei YE

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 280-284 doi: 10.1007/s11708-012-0203-0

Abstract: Based on the variable heat capacities of the working fluid, the irreversibility coming from the compressionMoreover, the influence of the compression and expansion efficiencies, the variable heat capacities and

Keywords： Miller cycle     variable heat capacity     irreversibility     parametric optimization    

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Exergy analysis of R1234ze(Z) as high temperature heat pump working fluid with multi-stage compression

Bin HU, Di WU, L.W. WANG, R.Z. WANG

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 493-502 doi: 10.1007/s11708-017-0510-6

Abstract: exergy analysis of multi-stage compression high temperature heat pump (HTHP) systems with R1234ze(Z) working

Keywords： multi-stage compression     high temperature heat pump     heat recovery     exergy destruction     R1234ze(Z) working    

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A neural network-based production process modeling and variable importance analysis approach in corn

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3,   Pages 358-371 doi: 10.1007/s11705-022-2190-y

Abstract: In this paper, a neural network-based production process modeling and variable importance analysis approachUltimately, variable importance analysis is carried out by the extended weight connection method, and

Keywords： big data     corn to sugar factory     neural network     variable importance analysis    

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On the improvement design of dynamic characteristics for the roller follower of a variable-speed plate

Hui Ching FAN, Hong Sen YAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1,   Pages 5-15 doi: 10.1007/s11465-012-0310-y

Abstract:

Without modifying the cam contour, a cam mechanism with a variable input speed trajectory offers anFirstly, the speed trajectory of cam is derived by employing Bezier curve, and motion continuity conditions

Keywords： cam mechanism     variable input speed     kinematic design     dynamic design     optimal design    

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Working Up Green, and Living Up Green

Ji-shan He

Frontiers of Engineering Management 2014, Volume 1, Issue 1,   Pages 2-2 doi: 10.15302/J-FEM-2014002

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Title Author Date Type Operation

Performance design of a cryogenic air separation unit for variable working conditions using the lumped

Jinghua XU, Tiantian WANG, Qianyong CHEN, Shuyou ZHANG, Jianrong TAN

Journal Article

Characteristics Analysis of Integrated CAES and CFPP Trigeneration System Considering Working Conditions

Jiajia Li,Peigang Yan,Guowen Zhou,Xingshuo Li,Qiang Li,Jinfu Liu,Daren Yu,

Journal Article

Model design of static experiment for the middle tower of multispan suspension bridge based on actual workingconditions

Ji Lin,Wang Tao and Wu Hanliang

Journal Article

Properties of photosynthesis and spectral reflectance in leaves of maize under the low and variable waterconditions

Sun Li,Su Gengqiang,Liu Yanmei,Zhao Yanyan and Shi Gangrong

Journal Article

Tacholess order-tracking approach for wind turbine gearbox fault detection

Yi WANG, Yong XIE, Guanghua XU, Sicong ZHANG, Chenggang HOU

Journal Article

Two-level uncapacitated lot-sizing problem considering the financing cost of working capital requirement

Yuan BIAN, David LEMOINE, Thomas G. YEUNG, Nathalie BOSTEL

Journal Article

A method to calculate working capacity space of multi-DOF manipulator and the application in excavating

Baochen WEI, Feng GAO

Journal Article

Analysis of planetary gear transmission in non-stationary operations

Fakher CHAARI, Mohamed Slim ABBES, Fernando Viadero RUEDA, Alfonso Fernandez del RINCON, Mohamed HADDAR

Journal Article

Unit commitment using dynamic programming–an exhaustive working of both classical and stochastic approach

Balasubramaniyan SARAVANAN, Surbhi SIKRI, K. S. SWARUP, D. P. KOTHARI

Journal Article

Mechanical design, modeling, and identification for a novel antagonistic variable stiffness dexterous

Journal Article

Effect of variable heat capacities on performance of an irreversible Miller heat engine

Xingmei YE

Journal Article

Exergy analysis of R1234ze(Z) as high temperature heat pump working fluid with multi-stage compression

Bin HU, Di WU, L.W. WANG, R.Z. WANG

Journal Article

A neural network-based production process modeling and variable importance analysis approach in corn

Journal Article

On the improvement design of dynamic characteristics for the roller follower of a variable-speed plate

Hui Ching FAN, Hong Sen YAN

Journal Article

Working Up Green, and Living Up Green

Ji-shan He

Journal Article