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Performance improvement of a pulse tube cryocooler with a single compressor through cascade utilization

Xuming LIU, Xiafan XU, Biao YANG, Xiaotong XI, Liubiao CHEN, Junjie WANG, Yuan ZHOU

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 345-357 doi: 10.1007/s11708-020-0708-x

Abstract: calculation model was first established to study the effects of radiation heat leakage on apparent performancemass and acoustic power in the lower-temperature section, which further enhances the refrigeration performance

Keywords： radiation heat leakage     active thermal insulation     cascade utilization     cold energy     performance improvement    

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Potential of performance improvement of concentrated solar power plants by optimizing the parabolic trough

Honglun YANG, Qiliang WANG, Jingyu CAO, Gang PEI, Jing LI

Frontiers in Energy 2020, Volume 14, Issue 4,   Pages 867-881 doi: 10.1007/s11708-020-0707-y

Abstract: This paper proposes a comprehensive thermodynamic and economic model to predict and compare the performanceresults reveal that power plants with novel receivers exhibit a superior thermodynamic and economic performancefreeze protection temperature is also conducted to analyze the general rule of influence of the receiver performanceon power plants performance.coupled with low melting temperature molten salt is the best configuration for improving the overall performance

Keywords： concentrated solar power     parabolic trough receiver     heat loss     solar energy     annual performance    

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Robust switched fractional controller for performance improvement of single phase active power filter

H. AFGHOUL,F. KRIM,D. CHIKOUCHE,A. BEDDAR

Frontiers in Energy 2016, Volume 10, Issue 2,   Pages 203-212 doi: 10.1007/s11708-015-0381-7

Abstract: A novel controller is proposed to regulate the DC-link voltage of a single phase active power filter (SPAPF). The proposed switched fractional controller (SFC) consists of a conventional PI controller, a fractional order PI (FO-PI) controller and a decision maker that switches between them. Commonly, the conventional PI controller is used in regulation loops due to its advantages in steady-state but it is limited in transient state. On the other hand, the FO-PI controller overcomes these drawbacks but it causes dramatic degradation in control performances in steady-state because of the fractional calculus theory and the approximation method used to implement this kind of controller. Thus, the purpose of this paper is to switch to the PI controller in steady-state to obtain the best power quality and to switch to the FO-PI controller when external disturbances are detected to guarantee a fast transient state. To investigate the efficiency and accuracy of the SFC considering all robustness tests, an experimental setup has been established. The results of the SFC fulfill the requirements, confirm its high performances in steady and transient states and demonstrate its feasibility and effectiveness. The experiment results have satisfied the limit specified by the IEEE harmonic standard 519.

Keywords： conventional PI controller     fractional calculus (FC)     total harmonic distortion (THD)     Oustaloup continuous approximation (OCA)     single phase active power filter (SPAPF)    

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Liquid metal cooling in thermal management of computer chips

MA Kunquan, LIU Jing

Frontiers in Energy 2007, Volume 1, Issue 4,   Pages 384-402 doi: 10.1007/s11708-007-0057-3

Abstract: With the rapid improvement of computer performance, tremendous heat generation in the chip becomes a

Keywords： tremendous     computer performance     generation     management     improvement    

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Requirements in performance measurement systems of construction projects from the lean production perspective

Karina B. BARTH, Carlos T. FORMOSO

Frontiers of Engineering Management 2021, Volume 8, Issue 3,   Pages 442-455 doi: 10.1007/s42524-020-0108-2

Abstract: Performance measurement (PM) generates useful data for process control, facilitates communication betweenreducing the share of nonvalue-adding activities, increasing process transparency, building continuous improvementIn addition, studies on how lean companies (or projects) use performance measurement and to what extentrequirements in PM systems of construction projects from the perspective of lean production and a taxonomy of performance

Keywords： performance measurement     lean construction     production management     continuous improvement     metrics    

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Improvement of engine performance with high compression ratio based on knock suppression using Miller

Haiqiao WEI, Jie YU, Lei ZHOU

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 691-706 doi: 10.1007/s11708-019-0621-3

Abstract: To verify the advantages of the high compression ratio, the fuel economy and power performance of CR10The result revealed that, compared with CR10, a similar power performance and a reduced fuel consumptionAt partial load, the conditions of CR12 had very superior fuel economy and power performance compared

Keywords： high compression ratio     knock     Miller cycle     split injection     engine performance    

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Improvement potential of today’s WEEE recycling performance: The case of LCD TVs in Belgium

Paul Vanegas, Jef R. Peeters, Dirk Cattrysse, Wim Dewulf, Joost R. Duflou

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-1000-0

Abstract: In this article, an evaluation of the recycling performance at a national level for one of the fastestSecondly, a material flow analysis is conducted by evaluating the separation performance of a recyclingThe analysis shows that while recycling performance for ferrous metals and aluminium are relatively highrecycled; meaning that for these materials, at a national level for Belgium, there is a potential for improvement

Keywords： Recycling     Waste of electrical and electronic equipment (WEEE)     Material flow analysis     LCD TVs     Precious metals     Plastics    

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Exploring differentiated improvement strategies of cultivated land quality in China

Frontiers of Agricultural Science and Engineering doi: 10.15302/J-FASE-2023523

Abstract:

● Cultivated land quality can be considered in four dimensions: suitability, contiguity, resistance, and ecological stress.

Keywords： China     cultivated land quality     differentiated improvement     food security    

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Improvement of part-load performance of gas turbine by adjusting compressor inlet air temperature and

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 1000-1016 doi: 10.1007/s11708-021-0746-z

Abstract: the compressor inlet air temperature and the IGV opening are studied comprehensively to optimize GT performanceFor the best GT performance of a given load, the IGV could be adjusted according to inlet air temperatureIn addition, inlet air heating has a considerable potential for the improvement of part-load performance

Keywords： inlet air temperature     inlet guide vane (IGV) opening     part-load     equilibrium running line     gas turbine (GT) efficiency     surge margin (SM)    

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Advance in Structural Steel

Weng Yuqing

Strategic Study of CAE 2002, Volume 4, Issue 3,   Pages 48-53

Abstract:

Advance on “Ultra Steel”，which is characterized by fine grained microstructure，is described in this paper. Progress has been made in this field in China. Yielding strength increases from 235 Mpa to 420〜 470 Mpa while elongation increases from 26% to 29% 〜34% for plain carbon steels. The high strength steel with anti-delayed fracture function has been developed and its pilot testing has been successfully finished in IVECO Auto Com. with 13.9 grade.

Keywords： iron and steel materials     basic research     performance improvement     advance    

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Research progress on genetic improvement of

Chuanping YANG

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 4,   Pages 391-401 doi: 10.15302/J-FASE-2017183

Abstract: Over the past 30 years, effective progress has been made in genetic improvement and molecular breedingAll this research has provided a model and data for the foundation of forest genetic improvement and

Keywords： Betula platyphylla     genetic improvement     molecular breeding     seed orchard    

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A review of systematic evaluation and improvement in the big data environment

Feng YANG, Manman WANG

Frontiers of Engineering Management 2020, Volume 7, Issue 1,   Pages 27-46 doi: 10.1007/s42524-020-0092-6

Abstract: The purpose of this paper is to provide an overview and discussion of systematic evaluation and improvementFurthermore, we explore the systematic improvement studies and application fields.

Keywords： big data     evaluation methods     systematic improvement     big data analytic techniques     data mining    

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Study on systematically evaluating models for project performance and improvement

Li Zhenyou,He Jishan

Strategic Study of CAE 2011, Volume 13, Issue 8,   Pages 10-14

Abstract: the important and necessary tool for the project-driven company to continuously improve their project performancesystematically evaluate the projects, and applied such an improved model to evaluate project processes and performance

Keywords： project evaluation     project management     PE model     project knowledge management    

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Quality and efficiency improvement technology for five megawatt offshore wind turbines and its application

Huali HAN

Frontiers of Engineering Management 2020, Volume 7, Issue 4,   Pages 618-621 doi: 10.1007/s42524-020-0142-0

Keywords： renewable energy     megawatt offshore wind turbine     technology-driven     quality improvement    

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Embryo-mediated genome editing for accelerated genetic improvement of livestock

Zachariah MCLEAN, Björn OBACK, Götz LAIBLE

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 2,   Pages 148-160 doi: 10.15302/J-FASE-2019305

Abstract: Such a breeding strategy would enable a more targeted, accelerated approach for livestock improvement

Keywords： cattle     cloning     CRISPR/Cas9     cytoplasmic injection     embryo     genome editing     germline chimaeras     HDR     livestock improvement    

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Title Author Date Type Operation

Performance improvement of a pulse tube cryocooler with a single compressor through cascade utilization

Xuming LIU, Xiafan XU, Biao YANG, Xiaotong XI, Liubiao CHEN, Junjie WANG, Yuan ZHOU

Journal Article

Potential of performance improvement of concentrated solar power plants by optimizing the parabolic trough

Honglun YANG, Qiliang WANG, Jingyu CAO, Gang PEI, Jing LI

Journal Article

Robust switched fractional controller for performance improvement of single phase active power filter

H. AFGHOUL,F. KRIM,D. CHIKOUCHE,A. BEDDAR

Journal Article

Liquid metal cooling in thermal management of computer chips

MA Kunquan, LIU Jing

Journal Article

Requirements in performance measurement systems of construction projects from the lean production perspective

Karina B. BARTH, Carlos T. FORMOSO

Journal Article

Improvement of engine performance with high compression ratio based on knock suppression using Miller

Haiqiao WEI, Jie YU, Lei ZHOU

Journal Article

Improvement potential of today’s WEEE recycling performance: The case of LCD TVs in Belgium

Paul Vanegas, Jef R. Peeters, Dirk Cattrysse, Wim Dewulf, Joost R. Duflou

Journal Article

Exploring differentiated improvement strategies of cultivated land quality in China

Journal Article

Improvement of part-load performance of gas turbine by adjusting compressor inlet air temperature and

Journal Article

Advance in Structural Steel

Weng Yuqing

Journal Article

Research progress on genetic improvement of

Chuanping YANG

Journal Article

A review of systematic evaluation and improvement in the big data environment

Feng YANG, Manman WANG

Journal Article

Study on systematically evaluating models for project performance and improvement

Li Zhenyou,He Jishan

Journal Article

Quality and efficiency improvement technology for five megawatt offshore wind turbines and its application

Huali HAN

Journal Article

Embryo-mediated genome editing for accelerated genetic improvement of livestock

Zachariah MCLEAN, Björn OBACK, Götz LAIBLE

Journal Article