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Online since: June 2012
Authors: Yu Ping Yang, Yun Feng Xu
To Realize datas reading and writing by self_control software throgh DCS, when coal quality, loading altered, realized automatic closed-loop control of combustion process of circulating fluidized bed, to implement primary air flow, secondary air flow and air-induced automatic cordinated control and reached cleaning of coal quality and combustion high efficiency.
The desuperheater is a supporting surface of the boiler equipment desuperheater,reduction in warm water with a temperature regulation by the boiler feed water system, this scheme is used to cascade PID adjusting loop.
FLASH high-capacity applications without the need for back-up battery, even if the system is powered down, the data is not lost at least a decade.
Opening: Standard user/server structure ensures the data consistency, safety and large capacity demand.
The desuperheater is a supporting surface of the boiler equipment desuperheater,reduction in warm water with a temperature regulation by the boiler feed water system, this scheme is used to cascade PID adjusting loop.
FLASH high-capacity applications without the need for back-up battery, even if the system is powered down, the data is not lost at least a decade.
Opening: Standard user/server structure ensures the data consistency, safety and large capacity demand.
Online since: December 2022
Authors: Norzahir Sapawe, Puteri Nurain Syahirah Megat Muhammad Kamal, Amin Safwan Alikasturi
However, because solid materials containing metal compounds in a nonmetallic state can either have a minimal catalytic activity or be catalytically inactive, catalyst pretreatment such as catalyst calcination, catalyst reduction, and catalyst aging are frequently required for this method of preparing the catalyst [11].
The pre-reduction of catalyst and the experimental work for the catalytic conversion of cellulose to LA were carried out in a 100 ml stainless steel semi-batch reactor.
The pre-reduction of the catalyst was conducted with 5 bar of hydrogen gas (H2).
After the pre-reduction of the catalyst, 1.5 g of cellulose was then loaded into the reactor.
This data was necessary for calculating cellulose conversion to products.
The pre-reduction of catalyst and the experimental work for the catalytic conversion of cellulose to LA were carried out in a 100 ml stainless steel semi-batch reactor.
The pre-reduction of the catalyst was conducted with 5 bar of hydrogen gas (H2).
After the pre-reduction of the catalyst, 1.5 g of cellulose was then loaded into the reactor.
This data was necessary for calculating cellulose conversion to products.
Online since: May 2011
Authors: Wei Huang, Guo Jing He
Wavelet analysis is one of the various kinds of identification methods, which has been used in linear and nonlinear system response data since it can decompose signals simultaneously both in time-domain and frequency-domain with adaptive windows.
Field data sampling is using Orient vibration and noise technical institute DASP2003 software.
[4] Brown D L, et al .Parameter Estimation Technique for Modal Analysis, SAE paper 790221, 1979 [5] Vold H,Rocklin G F.The Numerical Implementation of a Multi-Input Modal Estimation Method for Mini-Computer,IMAC,1982 [6] Juang J N,Pappa R S.An Eigensystem Realization Algorithm for Modal Paremeter Identification and Modal Reduction, J.Guid.Control,and Dyn.,8,1985,620~627
Field data sampling is using Orient vibration and noise technical institute DASP2003 software.
[4] Brown D L, et al .Parameter Estimation Technique for Modal Analysis, SAE paper 790221, 1979 [5] Vold H,Rocklin G F.The Numerical Implementation of a Multi-Input Modal Estimation Method for Mini-Computer,IMAC,1982 [6] Juang J N,Pappa R S.An Eigensystem Realization Algorithm for Modal Paremeter Identification and Modal Reduction, J.Guid.Control,and Dyn.,8,1985,620~627
Online since: November 2010
Authors: Mi Zhou, Wan Cheng Yuan, Yue Zhang
Fracture and Damage Mechanism of RC Pile Group Foundation under
Low Reversed Cyclic Loading
Zhou Mi 1,3 a, Zhang Yue 2,b and Yuan Wancheng 3,c
1
Key Laboratory for Old Bridge Detection and Reinforcement Technology of Ministry of
Transportation, Chang'an University,Xi'an 710064, Shaanxi, China
2
School of Construction and Civil Engineering Xi'an University of Science and Technology,
Xi'an, China
3
State Key Laboratory for Disaster Reduction in Civil Engineering ,Tongji University ,
Shanghai 200092, China
a
666zhoumi@mail.tongji.edu.cn, b zhangyue7810@163.com, cyuan@mail.tongji.edu.cn
Keywords: Damage Mechanism; RC Pile Group; Pseudo-static test
Abstract.
The test also provided the data to quantitatively assessment the positive effect of steel protective pipe for RC pile.
Fig.5 Finite element model scheme Fig.6 RC pile and ST pile fiber element sections Park-Ang double parameters damage index considered the effect of maximum deformation and cumulative hysteretic consumption for structural damage and this damage index has a larger number of test data calibration[2,3], so this article introduces modified Park-Ang model to simulate component of mechanical behavior in soften segment.
The test also provided the data to quantitatively assessment the positive effect of steel protective pipe for RC pile.
Fig.5 Finite element model scheme Fig.6 RC pile and ST pile fiber element sections Park-Ang double parameters damage index considered the effect of maximum deformation and cumulative hysteretic consumption for structural damage and this damage index has a larger number of test data calibration[2,3], so this article introduces modified Park-Ang model to simulate component of mechanical behavior in soften segment.
Online since: May 2015
Authors: M.A. Rahman, Mohammad Minhat, Abu Bakar Baharudin, Nur Atiqah Md Sadan, Halim Isa
The vibration signals generated by accelerometers sent and stored in data acquisition in Vibdaq Sofware.
The experiment was designed in this way in order to make the range of data uniformly distributed in complete ranges of the input parameters. 126 samples of data collection were obtained from different combinations of parameter levels.
The data obtained were analyzed using the Minitab Statistical Software.
It has been proven by result of the statistical analysis of experimental data.
The value of R² which is 47.7 %, indicates the percentage of the closeness experimental data to the model.
The experiment was designed in this way in order to make the range of data uniformly distributed in complete ranges of the input parameters. 126 samples of data collection were obtained from different combinations of parameter levels.
The data obtained were analyzed using the Minitab Statistical Software.
It has been proven by result of the statistical analysis of experimental data.
The value of R² which is 47.7 %, indicates the percentage of the closeness experimental data to the model.
Online since: March 2014
Authors: Ying Ke Sun, Xiao Lan Yao
The head and tail shape and size of steel plate is accurately measured, which provides the basis data for the follow-up steel rolling and shearing process.
In this paper, the data of these two cases is analyzed for the identification and size calculation of the steel plate head and tail shape.
Fig. 6 The calculation method of steel Fig.7 The identification of head and tail shape plate width steel palte According to the data of steel plate profile and width, the identification method of head and tail shape of steel plate is shown.
The measuring computer mainly completes the real-time steel plate image processing and the corresponding data calculation, transmitting and storage.
Software section includes image acquisition and display, image processing, sizing and data transmission and other parts.
In this paper, the data of these two cases is analyzed for the identification and size calculation of the steel plate head and tail shape.
Fig. 6 The calculation method of steel Fig.7 The identification of head and tail shape plate width steel palte According to the data of steel plate profile and width, the identification method of head and tail shape of steel plate is shown.
The measuring computer mainly completes the real-time steel plate image processing and the corresponding data calculation, transmitting and storage.
Software section includes image acquisition and display, image processing, sizing and data transmission and other parts.
Online since: April 2013
Authors: Ali Ourdjini, Siti Rahmah Shamsuri, Abdelsalam Ahdash, Esah Hamzah
This paper shows the reduction of corrosion rates under different conditions.
MATERIALS AND METHOD Before starting the design of impressed current, cathodic protection system, there are certain preliminary data that need to be gathered like the physical dimensions of structure to be protected (for example, length, width, height and diameter.
These data are used to calculate the surface area to be protected), corrosion history of structures in the environment (it may reveal abnormal conditions that hamper the ICCP function) [4], review pH data (steel's corrosion rate increases as pH decreases)[5], current requirement (the amount of current required per square meter current density to change the structure’s potential to -0.85 volt ), coating resistance (decreases greatly with age and directly affects structure-to-electrolyte resistance for design calculations. and manufacturers usually supply coating resistance values) and selection of anode material, weight and dimensions (cylinderical Aluminium anode was chosen [2; 4].
Finally, after the data were collected, the number of required anodes for protection were detemined and the output rectifier voltage and rectifier selection were done.
All the above data were then used to calculate the output current, voltage and output power start immersing eight samples (40cm x 7.5cm x 4mm) in different freshwater conditions for one month duration as shown in Table 1.
MATERIALS AND METHOD Before starting the design of impressed current, cathodic protection system, there are certain preliminary data that need to be gathered like the physical dimensions of structure to be protected (for example, length, width, height and diameter.
These data are used to calculate the surface area to be protected), corrosion history of structures in the environment (it may reveal abnormal conditions that hamper the ICCP function) [4], review pH data (steel's corrosion rate increases as pH decreases)[5], current requirement (the amount of current required per square meter current density to change the structure’s potential to -0.85 volt ), coating resistance (decreases greatly with age and directly affects structure-to-electrolyte resistance for design calculations. and manufacturers usually supply coating resistance values) and selection of anode material, weight and dimensions (cylinderical Aluminium anode was chosen [2; 4].
Finally, after the data were collected, the number of required anodes for protection were detemined and the output rectifier voltage and rectifier selection were done.
All the above data were then used to calculate the output current, voltage and output power start immersing eight samples (40cm x 7.5cm x 4mm) in different freshwater conditions for one month duration as shown in Table 1.
Online since: February 2016
Authors: Tatyana Barbasova, L.S. Kazarinov
Experimental parameter of the coke specific consumption
In case of natural gas injection coke is saved due to increase of indirect and decrease of direct reduction, replacement of a part of coke carbon by natural gas carbon and decrease of sulphur incoming into the furnace and slag outcoming due to decrease of the coke consumption.
(11) The values of Δai ratios of the linear dependency (2) as to the set of statistical data may be defined, for example, by the least square method.
Thus we can build extreme parameters of the blast-furnace process by a set of experimental data of iron making, air input and natural gas consumption.
Statistical modeling of charcoal consumption of blast furnaces based on historical data.
(11) The values of Δai ratios of the linear dependency (2) as to the set of statistical data may be defined, for example, by the least square method.
Thus we can build extreme parameters of the blast-furnace process by a set of experimental data of iron making, air input and natural gas consumption.
Statistical modeling of charcoal consumption of blast furnaces based on historical data.
Online since: October 2013
Authors: Hua Meng, Jian De Wu, Ting Ting Leng
Study on the Resistance Loss Model of Slurry Pipeline for Iron ore Concentrate with High Concentration
Tingting Leng1,a, Hua Wang2,3,b and Jiande Wu4,c
1 Faculty of Civil and Architectural Engineering, Kunming University of Science and Technology, Kunming 650000, China
2 Faculty of Metallurgy and Energy Engineering Kunming University of Science and Technology, Kunming 650224, China
3 Kunming University of Science and Technology, Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction, Ministry of Education, Kunming 650500, China
4 Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500, China
alengtingting@126.com, bwanghuaheat@hotmail.com, cwjiande@gmail.com
Key words: slurry pipeline; pressure loss; Dahongshan
Abstract.
We made comparison analysis of the results of model calculations on the measured data of Yunnan Dahongshan iron concentrates pipeline, finding resistance loss calculation model for high concentrations iron concentrates slurry pipeline, to provide reliable reference for the design, operation of similar slurry pipeline engineering.
The verification and analysis of mathematical model We compare the data of resistant loss which is measured by Dahongshan iron concentrate ore slurry pipeline with other result calculated by Durand’s model and Fei JunXiang’s model.
Fig.1 The comparison between the measured data and calculated The Fig.1 shows that the curve of resistant loss which is measured and calculated by two mathematical models is similar with the clear water.
We made comparison analysis of the results of model calculations on the measured data of Yunnan Dahongshan iron concentrates pipeline, finding resistance loss calculation model for high concentrations iron concentrates slurry pipeline, to provide reliable reference for the design, operation of similar slurry pipeline engineering.
The verification and analysis of mathematical model We compare the data of resistant loss which is measured by Dahongshan iron concentrate ore slurry pipeline with other result calculated by Durand’s model and Fei JunXiang’s model.
Fig.1 The comparison between the measured data and calculated The Fig.1 shows that the curve of resistant loss which is measured and calculated by two mathematical models is similar with the clear water.
Online since: August 2013
Authors: Ping Pang, Xin Sheng Yin
However, from the data we retrieved, from board to our country, at present the reinforcement arrangeed method adopted in the prestressed concrete slab is uniform, and for other arrangement of prestressed plate has not much discussion.One disadvantage of uniformly arrangement method is too much amount of prestressed reinforcement .This then causes high cost.
To change this situation, on the one hand, ask for an increase in steel production, an improvement of production technology and the reduction of its cost.
Relationship of limited load with the side length ratio a/b 1.0 1.2 1.4 1.6 1.8 2.0 Pycr( ) 1.000 1.1276 1.3038 1.5233 1.7835 2.0833 From above data, the bigger the side length ratio,the bigger the limited load.
Relationship of limited load with the distribution of reinforcement N 1 2 3 4 Pycr( ) 1.00 0.67 0.50 0.40 From above data of table 2, the more concentrated prestressed tendons layout, the greater the limited load.
To change this situation, on the one hand, ask for an increase in steel production, an improvement of production technology and the reduction of its cost.
Relationship of limited load with the side length ratio a/b 1.0 1.2 1.4 1.6 1.8 2.0 Pycr( ) 1.000 1.1276 1.3038 1.5233 1.7835 2.0833 From above data, the bigger the side length ratio,the bigger the limited load.
Relationship of limited load with the distribution of reinforcement N 1 2 3 4 Pycr( ) 1.00 0.67 0.50 0.40 From above data of table 2, the more concentrated prestressed tendons layout, the greater the limited load.