Resource Type

Journal Article 1728

Year

2024 2

2023 109

2022 121

2021 119

2020 103

2019 84

2018 104

2017 92

2016 75

2015 89

2014 66

2013 64

2012 57

2011 60

2010 71

2009 65

2008 73

2007 76

2006 56

2005 40

open ︾

Keywords

system 17

optimization 15

simulation 14

numerical simulation 13

index system 10

Artificial intelligence 9

management 9

system engineering 9

Multi-agent system 8

management system 8

Qian Xuesen 7

different 7

modeling 7

heat transfer 6

public health 6

sustainable development 6

Machine learning 5

development 5

engineering management 5

open ︾

Search scope:

排序： Display mode:

Experimental investigation on oil-gas separator of air-conditioning systems

Dianbo XIN,Shuliang HUANG,Song YIN,Yuping DENG,Wenqiang ZHANG

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 411-416 doi: 10.1007/s11708-017-0447-9

Abstract: The oil-return system plays an important role in the variable refrigerant flow (VRF) systems becauseThe oil-gas separator is the most essential component of the oil-return system, and the separation efficiencyconcentration instantaneously, because the sound velocity was changed with the mass ratio of oil to refrigerantThe separation efficiency of the separator could be obtained by comparing the mass fraction of oil to refrigerantbefore and after the separator was connected to the system.

Keywords： variable refrigerant flow system     oil-gas separator     separation efficiency    

HTML PDF Collect

Simulation on refrigerant flow in adiabatic capillary tube

WANG Meixia, LIU Cunfang, ZHOU Qiangtai

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 3,   Pages 332-336 doi: 10.1007/s11465-008-0054-x

Abstract: This paper proposes a new mathematical model to calculate flow characteristics of the adiabatic capillaryThe flow characteristics are finally analyzed.

Keywords： mathematical     diameter     literature     sub-cooling     adiabatic capillary    

HTML PDF Collect

New refrigeration system using CO vapor-solid as refrigerant

HUANG Dongping, DING Guoliang, QUACK Hans

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 494-498 doi: 10.1007/s11708-008-0070-x

Abstract: A refrigerant must be in the vapor-liquid phase in a vapor-compression refrigeration system, therefore, CO cannot be used as a refrigerant for temperatures lower than -56°C because solid CO will form underA refrigeration system with CO vapor-solid particles as refrigerant is put forward, by which a temperatureTheoretical cycle analysis of the refrigeration system shows that its COP can be 50% higher than that

Keywords： refrigerant     adjustable     temperature     vapor-compression refrigeration     sublimator    

HTML PDF Collect

Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 711-725 doi: 10.1007/s11465-021-0647-1

Abstract: Thus, this paper aims to design a novel variable stiffness actuator (VSA) that can provide safer physicalVSA follows the idea of modular design, mainly including a variable stiffness module and a drive moduleThe variable stiffness module transmits the motion from the drive module in a roundabout manner, makingAs the key component of the variable stiffness module, a stiffness adjustment mechanism with a symmetricalTo facilitate building a manipulator in the future, an expandable electrical system with a distributed

Keywords： variable stiffness actuator     variable stiffness module     drive module     symmetrical structure     double-deckgrooves     expandable electrical system    

HTML PDF Collect

Dynamic contribution of variable-speed wind energy conversion system in system frequency regulation

Yajvender Pal VERMA, Ashwani KUMAR

Frontiers in Energy 2012, Volume 6, Issue 2,   Pages 184-192 doi: 10.1007/s11708-012-0185-y

Abstract: from the grid during disturbances with advanced power electronics controllers and reduce equivalent systemThus, it is important that wind turbines also contribute to system frequency control.paper examines the dynamic contribution of doubly fed induction generator (DFIG)-based wind turbine in systemThe simulations carried out in a two-area interconnected power system demonstrate the contribution of

Keywords： doubly fed induction generator (DFIG)     load frequency control     inertial control     wind energy conversion system    

HTML PDF Collect

Optimal Scheduling of Variable-pressure Variable-flow Operation of Inverter-drive Pumps Connected in

Li Hongbin,Zhang Chenghui,Song Jun

Strategic Study of CAE 2001, Volume 3, Issue 9,   Pages 52-57

Abstract:

The paper analyzes common methods for the optimal scheduling modeling problem of variable-pressurevariable-flow operation of inverter-drive pumps connected in parallel and compares the merits and defectsanother method, the objective function is the square of the difference between the actual and needed flow

Keywords： optimal scheduling     nonlinear bounded programming     speed regulation of pumps    

HTML PDF Collect

Applications of thermostatically controlled loads for demand response with the proliferation of variable

Meng SONG, Wei SUN

Frontiers in Energy 2022, Volume 16, Issue 1,   Pages 64-73 doi: 10.1007/s11708-021-0732-5

Abstract: More flexibility is desirable with the proliferation of variable renewable resources for balancing supply

Keywords： thermostatically controlled load     demand response     renewable energy     power system operation    

HTML PDF Collect

Sustainable design of sanitation system based on material and value flow analysis for urban slum in Indonesia

Ken USHIJIMA, Mitsuteru IRIE, Neni SINTAWARDANI, Jovita TRIASTUTI, Umi HAMIDAH, Tadaharu ISHIKAWA, Naoyuki FUNAMIZU

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1,   Pages 120-126 doi: 10.1007/s11783-012-0460-5

Abstract: Material flow analysis (MFA) and value flow analysis (VFA) were applied to the sanitation system in anBecause such disadvantages do not go back to disposers, but passed to downstream, the current value flowBased on current material and value flow structures, a resource recycling sanitation system scenarioBased on VFA, an affordable initial cost for such a system was calculated; this was found to be comparable

Keywords： material flow     value flow     resource recycling system     sustainable design     initial cost     urban slum    

HTML PDF Collect

Boiling heat transfer correlations for refrigerant mixtures flowing inside micro-fin tubes

ZHANG Xiaoyan, ZHANG Xingqun, CHEN Yunguang, YUAN Xiuling

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 489-493 doi: 10.1007/s11708-008-0110-6

Abstract: Based on experimental results of ternary non-azeotropic refrigerant mixture R417A flowing and boilingtubes with different geometrical parameters, a boiling heat transfer correlations was developed for refrigerantindicates that the prediction by the present correlations is in good agreement with the experiment of refrigerant

Keywords： comparison     micro-fin     calculation     transfer     prediction    

HTML PDF Collect

Evaluation of measurement uncertainty of the high-speed variable-slit system based on the Monte Carlo

Yin ZHANG, Jianwei WU, Kunpeng XING, Zhongpu WEN, Jiubin TAN

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 517-537 doi: 10.1007/s11465-020-0589-z

Abstract: presents a dynamic and static error transfer model and uncertainty evaluation method for a high-speed variable-slitsystem based on a two-dimensional orthogonal double-layer air-floating guide rail structure.First, an error transfer model of the high-speed variable-slit system is established, and the influenceThe proposed model can evaluate the performance of the complex mechanical system and be used to guide

Keywords： air-floating guide rail     error transfer model     driving and following structure     dynamic error     uncertainty evaluation     Monte Carlo method    

HTML PDF Collect

Substance flow analysis for an urban drainage system of a representative hypothetical city in China

Hua BAI, Siyu ZENG, Xin DONG, Jining CHEN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 5,   Pages 746-755 doi: 10.1007/s11783-013-0551-y

Abstract: This paper discusses the use of substance flow analysis (SFA) as a tool to support quantified researchBased on the principle of mass balance, a static substance flow model is established to describe andIt is estimated that the annual flux of water, COD, TN and TP through the urban drainage system in 2010decade, resulting in a more than threefold increase in the input of substances into the urban drainage system

Keywords： substance flow analysis (SFA)     urban drainage system     representative hypothetical city (RH city)     water    

HTML PDF Collect

The Building of Papermaking Enterprise’s Recycling Economy Evaluation Index System Based on Value Flow

Zhi-fang Zhou,Jing Ou,Sha-sha Wang,Xiao-hong Chen

Frontiers of Engineering Management 2016, Volume 3, Issue 1,   Pages 9-17 doi: 10.15302/J-FEM-2016009

Abstract: , which is the representative of the light industry, few studies have analyzed the evaluation index systemSince the current material flow analyses have limitations that the researchers cannot calculate materialsThe authors take advantage of the intrinsic correlation between the basic principle of value flow analysisand circular economy, and then analyze the dynamic changes of material flow and value flow through enterprisesConsidering the resource output, the authors set up the layered structure of the evaluation index system

Keywords： circular economy     the papermaking enterprise     material flow analysis     value flow analysis     evaluation indexsystem    

HTML PDF Collect

Knowledge-Based Variable Structure Decoupling Control of a Nonlinear Multivariable System

Tu Chengyuan,Zeng Yanjun

Strategic Study of CAE 2001, Volume 3, Issue 10,   Pages 48-52

Abstract:

A knowledge-based variable-structure decoupling is developed, and be utilized to control a nonlinearmultivariable system, so as to avoid the model-establishing process, especially avoid large amount ofhave been successively utilized to the set-point temperature control of a 3 × 3 strong coupled system

Keywords： nonlinear multivariable system     decoupling control     knowledge based variable structure decoupling    

HTML PDF Collect

Variable identification and automatic tuning of the main module of a servo system of parallel mechanism

YANG Zhiyong, XU Meng, HUANG Tian, NI Yanbing

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 82-88 doi: 10.1007/s11465-007-0014-x

Abstract: The variables of the main module of a servo system for miniature reconfigurable parallel mechanism wereTo identify the variables of the servo system, the triangle-shaped input signal with variable frequencyMoreover, all the variables including the rotary inertia of the servo system were identified by the additivechanging load with the attitude was considered, and the range of the controller variables in the servo system

Keywords： acceleration     reconfigurable parallel     additive     sequence     parallel mechanism    

HTML PDF Collect

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    

HTML PDF Collect

Title Author Date Type Operation

Experimental investigation on oil-gas separator of air-conditioning systems

Dianbo XIN,Shuliang HUANG,Song YIN,Yuping DENG,Wenqiang ZHANG

Journal Article

Simulation on refrigerant flow in adiabatic capillary tube

WANG Meixia, LIU Cunfang, ZHOU Qiangtai

Journal Article

New refrigeration system using CO vapor-solid as refrigerant

HUANG Dongping, DING Guoliang, QUACK Hans

Journal Article

Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Journal Article

Dynamic contribution of variable-speed wind energy conversion system in system frequency regulation

Yajvender Pal VERMA, Ashwani KUMAR

Journal Article

Optimal Scheduling of Variable-pressure Variable-flow Operation of Inverter-drive Pumps Connected in

Li Hongbin,Zhang Chenghui,Song Jun

Journal Article

Applications of thermostatically controlled loads for demand response with the proliferation of variable

Meng SONG, Wei SUN

Journal Article

Sustainable design of sanitation system based on material and value flow analysis for urban slum in Indonesia

Ken USHIJIMA, Mitsuteru IRIE, Neni SINTAWARDANI, Jovita TRIASTUTI, Umi HAMIDAH, Tadaharu ISHIKAWA, Naoyuki FUNAMIZU

Journal Article

Boiling heat transfer correlations for refrigerant mixtures flowing inside micro-fin tubes

ZHANG Xiaoyan, ZHANG Xingqun, CHEN Yunguang, YUAN Xiuling

Journal Article

Evaluation of measurement uncertainty of the high-speed variable-slit system based on the Monte Carlo

Yin ZHANG, Jianwei WU, Kunpeng XING, Zhongpu WEN, Jiubin TAN

Journal Article

Substance flow analysis for an urban drainage system of a representative hypothetical city in China

Hua BAI, Siyu ZENG, Xin DONG, Jining CHEN

Journal Article

The Building of Papermaking Enterprise’s Recycling Economy Evaluation Index System Based on Value Flow

Zhi-fang Zhou,Jing Ou,Sha-sha Wang,Xiao-hong Chen

Journal Article

Knowledge-Based Variable Structure Decoupling Control of a Nonlinear Multivariable System

Tu Chengyuan,Zeng Yanjun

Journal Article

Variable identification and automatic tuning of the main module of a servo system of parallel mechanism

YANG Zhiyong, XU Meng, HUANG Tian, NI Yanbing

Journal Article

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

Journal Article