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Heating energy performance and part load ratio characteristics of boiler staging in an office building

Da Young LEE, Byeong Mo SEO, Yeo Beom YOON, Sung Hyup HONG, Jong Min CHOI, Kwang Ho LEE

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 339-353 doi: 10.1007/s11708-018-0596-5

Abstract: ., the part load ratio characteristics and the corresponding gas energy consumption patterns are notIn this study, the part load ratio and the operating characteristics of gas boiler have been analyzedfound to be in a part load ratio range of 0 through 40% and thus energy consumption is significantlyaffected by boiler efficiency at low part load conditions.This suggests that boiler operation at the part load is an important factor in commercial buildings.

Keywords： EnergyPlus     boiler     part load ratio     gas consumption     office building     boiler staging    

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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: A novel adjusting method for improving gas turbine (GT) efficiency and surge margin (SM) under part-loadThe equilibrium running lines calculated through the calculation method involve three part-load conditionsFor 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 performanceThe IGV can be left unadjusted, even when the load is as low as 50%.

Keywords： inlet air temperature     inlet guide vane (IGV) opening     part-load     equilibrium running line     gas turbine    

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Part-load, startup, and shutdown strategies of a solid oxide fuel cell-gas turbine hybrid system

Yang LI, Yiwu WENG, Shilie WENG

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 181-194 doi: 10.1007/s11708-011-0149-7

Abstract: Three different part-load strategies are introduced and used to analyze the part-load performance of

Keywords： solid oxide fuel cell (SOFC)     hybrid system     part-load strategy     startup     shutdown    

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Interaction behavior and load sharing pattern of piled raft using nonlinear regression and LM algorithm-based

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1181-1198 doi: 10.1007/s11709-021-0744-6

Abstract: In previous studies, there is a lack of illustration regarding the load sharing and interaction behaviorelement (FE) models are prepared with various design variables in a double-layer soil system, and the loadANN models are prepared with Levenberg–Marquardt (LM) algorithm for load sharing and interaction factors

Keywords： interaction     load sharing ratio     piled raft     nonlinear regression     artificial neural network    

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DSM in an area consisting of residential, commercial and industrial load in smart grid

Balasubramaniyan SARAVANAN

Frontiers in Energy 2015, Volume 9, Issue 2,   Pages 211-216 doi: 10.1007/s11708-015-0351-0

Abstract: the demand side management (DSM) in smart grids, the power distribution units are able to modify the loadThis involves a co-operative interaction of the utility and the consumers so as to achieve customer loadThe objectives are to minimize the peak to average ratio (PAR) and the energy cost.The outcome of the game between supplier and customers helps to shape the load profile.their electricity costs but also substantially reduce the PAR in the load demand.

Keywords： demand side management (DSM)     smart grids     peak to average ratio (PAR)     smart meters and logarithmic price    

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Heat prices for public buildings in Tianjin

Boyuan HAO,Zhe TIAN,Yan DING,Peng PENG

Frontiers in Energy 2016, Volume 10, Issue 3,   Pages 249-259 doi: 10.1007/s11708-016-0412-z

Abstract: In this paper, a two-part heat price for public buildings in Tianjin is introduced, which divides theheat price into a basic part and a metering part.statistical analysis of information collected from two pilot heating enterprises, the specific heat loadFinally, the two-part heat price for public buildings in Tianjin is determined: the basic heat price

Keywords： heat metering     public buildings     two-part heat price     specific heat load    

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Experimental research on the mixed sand ratio and initial dry density of weathered sand improved expansivesoil free load swelling rate

Yang Jun,Yang Zhi,Zhang Guodong,Tang Yunwei and Chen Hongping

Strategic Study of CAE 2014, Volume 16, Issue 2,   Pages 73-78

Abstract:

Through the indoor free load swelling rate test，Yichang City，a section of a highway reconstructionKey analysis free load swelling rate of a non-load time，the proportion of mixed sand，the relationshipbetween the initial dry density， experimental studies have shown that：Free load swelling rate is mainlyswelling rate is not sensitive to the amount of sand mixed；in the same mixed sand ratio， weathered sandsoil free load swelling rate increases with increasing initial dry density increases rapidly between

Keywords： expansive soils     weathered sand     initial dry density     mixing sand ratio     free load swelling rate    

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Influence of loading ratio on flat slab connections at elevated temperature: A numerical study

Rwayda Kh. S. AL-HAMD, Martin GILLIE, Safaa Adnan MOHAMAD, Lee S. CUNNINGHAM

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 664-674 doi: 10.1007/s11709-020-0620-9

Abstract: subjected to high temperature, the degree of in-service loading, commonly expressed as the loading ratioIn particular, the loading ratio may be pivotal in relation to the phenomenon of load-induced thermalDespite its potentially pivotal role, to date, the influence of the loading ratio on both material andIn this paper, the effect of the loading ratio is numerically investigated at both material and structuralThe model incorporates a proposed constitutive model accounting for load-induced thermal strain and this

Keywords： concrete     finite elements     fire     load-induced thermal strain     punching shear    

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Residual stresses in coating-based systems, part I: Mechanisms and analytical modeling

ZHANG Xiancheng, WU Yixiong, XU Binshi, WANG Haidou

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 1-12 doi: 10.1007/s11465-007-0001-2

Abstract: Thin films and multi-layered coatings comprised of different classes of materials are often used for various functional devices. The thermo-mechanical integrity of these systems is becoming a major concern and is strongly related to the residual stresses because of the fabrication processes. In this paper, the sources of the residual stresses in the coating-based systems and the concept of misfit strain were briefly reviewed. Analytical models were developed to predict the residual stresses in multi-layered film structures or coating-based systems using the force and moment balances. In addition, the residual stress distributions in the func tionally and compositionally graded coatings were also analyzed.

Keywords： briefly     different     thermo-mechanical integrity     addition     residual    

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Process development for green part printing using binder jetting additive manufacturing

Hadi MIYANAJI, Morgan ORTH, Junaid Muhammad AKBAR, Li YANG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4,   Pages 504-512 doi: 10.1007/s11465-018-0508-8

Abstract: In this work, the process design considerations for BJ-AM in green part fabrication were discussed incould significantly affect the printing quality of the green parts such as geometrical accuracy and part

Keywords： binder jetting     additive manufacturing     green part     process optimization     process development    

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Taking Warning from the Eastern Part Elegant Landscape Maturing Slowly——On Landscape Architectural Developmentin the Western Part of China

Meng Zhaozhen

Strategic Study of CAE 2000, Volume 2, Issue 10,   Pages 56-58

Abstract:

First of all, it is necessary carried out comprehensive national land planning and individual design from the high plane of harmonious sustainable development between man's production and natural environment.

The essence of cities at present should be an environment for human settlement and living. The relation between urbanization process and natural environment is neither to diametrically oppose nor to damage each other. The image of the city is not only buildings and streets but also a mix of cities, architecture and natural environment, i.e.an artificial beauty merging into nature. Man's bright future will be to put cities and buildings into green environment.

The most important thing for construction of scenic and historical places and city parks and gardens is now to protect the natural resources of the site. It is wrong to follow limelight from others. Each city should creates its own feature from local natural environment and cultural tradition.

Elegant landscape will mature slowly. Great thing always gets a late prosperous termination of an affair.

Keywords： urbanization process     scenic and historical places     urban parks and gardens    

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Hydraulic Pressure Extremes Ratio & Extremes Ratio Efficiencies

Qi Maolin

Strategic Study of CAE 2001, Volume 3, Issue 4,   Pages 73-75

Abstract: applies basic formula to the calculation of a relationship between the hydraulic pressure extremes ratioof hydraulic system and the extremes ratio efficiencies.This relationship shows that the greater the hydraulic pressure extremes ratio is, the lower the extremesratio efficiencies are.The article holds that the hydraulic pressure extremes ratio can be designed and chosen.

Keywords： hydraulic pressure extremes ratio     extremes ratio efficiencies     hydraulic system    

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Estimation of composite load model with aggregate induction motor dynamic load for an isolated hybrid

Nitin Kumar SAXENA,Ashwani Kumar SHARMA

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 472-485 doi: 10.1007/s11708-015-0373-7

Abstract: The composite load is a combination of the static and dynamic load model.To develop this composite load model, the exponential load is used as a static load model and inductionmotors (IMs) are used as a dynamic load model.This aggregate model is used as a dynamic load model.exponential model of static load and for the fifth and third order IM dynamic load model using state

Keywords： isolated hybrid power system (IHPS)     composite load model     static load     dynamic load     induction motor loadmodel     aggregate load    

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Residual stresses in coating-based systems, part II: Optimal designing methodologies

ZHANG Xiancheng, WU Yixiong, XU Binshi, WANG Haidou

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2,   Pages 125-136 doi: 10.1007/s11465-007-0022-x

Abstract: In this part of the work, different cases are studied to illustrate the implementation of the analyticalmodels that have been developed in Part I [Front.

Keywords： function     different     substrate     interlayer     implementation    

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Current progress on internal medicine in China—2006 Part II

YAO Dingkang, ZHU Liang, YU Renqian, MEI Changlin

Frontiers of Medicine 2007, Volume 1, Issue 4,   Pages 343-351 doi: 10.1007/s11684-007-0066-7

Abstract: In the part II, a summary of advances made in four branches includes nephrology, hematology, endocrinology

Keywords： endocrinology     rheumatology     hematology     nephrology     representative    

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Title Author Date Type Operation

Heating energy performance and part load ratio characteristics of boiler staging in an office building

Da Young LEE, Byeong Mo SEO, Yeo Beom YOON, Sung Hyup HONG, Jong Min CHOI, Kwang Ho LEE

Journal Article

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

Journal Article

Part-load, startup, and shutdown strategies of a solid oxide fuel cell-gas turbine hybrid system

Yang LI, Yiwu WENG, Shilie WENG

Journal Article

Interaction behavior and load sharing pattern of piled raft using nonlinear regression and LM algorithm-based

Journal Article

DSM in an area consisting of residential, commercial and industrial load in smart grid

Balasubramaniyan SARAVANAN

Journal Article

Heat prices for public buildings in Tianjin

Boyuan HAO,Zhe TIAN,Yan DING,Peng PENG

Journal Article

Experimental research on the mixed sand ratio and initial dry density of weathered sand improved expansivesoil free load swelling rate

Yang Jun,Yang Zhi,Zhang Guodong,Tang Yunwei and Chen Hongping

Journal Article

Influence of loading ratio on flat slab connections at elevated temperature: A numerical study

Rwayda Kh. S. AL-HAMD, Martin GILLIE, Safaa Adnan MOHAMAD, Lee S. CUNNINGHAM

Journal Article

Residual stresses in coating-based systems, part I: Mechanisms and analytical modeling

ZHANG Xiancheng, WU Yixiong, XU Binshi, WANG Haidou

Journal Article

Process development for green part printing using binder jetting additive manufacturing

Hadi MIYANAJI, Morgan ORTH, Junaid Muhammad AKBAR, Li YANG

Journal Article

Taking Warning from the Eastern Part Elegant Landscape Maturing Slowly——On Landscape Architectural Developmentin the Western Part of China

Meng Zhaozhen

Journal Article

Hydraulic Pressure Extremes Ratio & Extremes Ratio Efficiencies

Qi Maolin

Journal Article

Estimation of composite load model with aggregate induction motor dynamic load for an isolated hybrid

Nitin Kumar SAXENA,Ashwani Kumar SHARMA

Journal Article

Residual stresses in coating-based systems, part II: Optimal designing methodologies

ZHANG Xiancheng, WU Yixiong, XU Binshi, WANG Haidou

Journal Article

Current progress on internal medicine in China—2006 Part II

YAO Dingkang, ZHU Liang, YU Renqian, MEI Changlin

Journal Article