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Online since: August 2014
Authors: Yan Qiong Song, Le Ming Xiao
Research on intelligent FCL to realize seamless power supply between the port and ship for energy conservation and emissions reduction XIAO Leming1,a,SONG Yanqiong2,b 1,2(Guangzhou Maritime Institute, Guangzhou,China,510725) axlm201@sina.com, bsongyqh@126.com Keywords: FCL; on-shore controlling circulation current; seamless connection; on-shore power connected Abstract.
Power system management can be proceeded via the alarm monitoring, data monitoring and the analysis; and also can change 10.0 kV / 50 Hz, 6.0 kV / 50 Hz power system in harbor grid by frequency conversion to 6.6 kV / 60 Hz A.C. electrical system, meanwhile, control the power supply of better quality; more scientific measurement of electricity can be carried out according to the market price, equipment and management cost; at the same time running simulation and processing information, through flexible building and configuration, it can carried out that integrity of on-shore power equipment management, monitoring, control, protection, billing and simulation and information processing, which are independent of each other on the function, so as to satisfy the requirement of high voltage level on-shore power access.The ship energy conservation and emissions reduction in port on-shore power connected, green environmental protection, energy conservation and emissions reduction are discussed in
documents[1]--[4].According to the typical value of marine diesel generating sets i.e. 7.68 kg/(kW·h), calculation is as follows, including: N2, O2, CO2, H2O mixed waste gas content (99.7%), 7.657 kg/(kW·h); NOX, SOX, HC, CO and harmful substances (0.3%), 23 g/(kW·h); Ship diesel generator of CO2 emissions data, specific fuel consumption of 185 g/(kW·h), the CO2 emissions of 610g/(kW·h)[5].
Intelligence platform control voltage of transformer, cooperate with ship's generator control panel, achieve load transfer, intelligence platform for data display and all kinds of fault alarm at the same time, intelligence platform with terminal Intelligent power supply system are an important part of Intelligent port.
When shore power through to Marine electric GTO get through, shore power transformer and Marine generator, before the synchronization with circulation current, circulation current reaches a certain value, the gate control gain control signal, GTO disconnect, L reactor access current limiting and automatic synchronization, Marine generator pull in synchronization, Marine generator run out, shore power transformer power supply, circulation current is normal, the gate at the same time to get computer time signal and the circulation current detection data signals, GTO get through, L reactor short circuit, shore power transformer power supply directly.
Online since: December 2018
Authors: Dagoberto Brandão Santos, Raphael França Assumpção, Daniela Barçante Perasoli, Dalila Chaves Sicupira
The UNS S32205 duplex stainless steel was warm rolled at 600°C with 60 and 80% of thickness reduction.
A tensile test was performed at room temperature, with a strain rate of 10-3 s-1, in a 5582 model Instron machine, using the Blue Hill software for data acquisition.
Component S, (123)<364>, is present in all conditions and reinforced on the warm rolled with high reduction (80%).
The S-type component increased with the increase in warm rolling reduction.
A significant increase in mechanical strength and its respective ductility reduction (total elongation) is observed in Table 2.
Online since: July 2014
Authors: Tai Quan Zhou, Xiao Jie Gu, Shi Long Lu
SSRF (Shear Strength Reduction Factor) 1.1 Introduction of Shear Strength Reduction Factor.
They proposed a shear strength reduction factor (Fr).
Fr is shear strength reduction factor.
Given full consideration to the actual working condition, the numerical calculation model of boundary conditions are as follows: (1) Restrain x displacement both side of model.(2) Restrain y displacement front and back(3) Fixed bottom of model ,that is to say, restrain three orientations displacements.(4) Restrain y displacement of the symmetry plane on the pile 2.5 Realization of strength reduction.Import data from the initial stress state, then modify the material properties and add Reduce analysis step to realize linearly increasing of field variable.After that , creat job and submit it.
Slope stability analysis by strength reduction [J].Geotechnique,1999,49(6):835-840
Online since: February 2014
Authors: Marcela Fridrichová, Jan Gemrich, Radek Magrla, Jana Stachová
By influence of establishment of dynamic balance saturated SOx vapours before finished decomposition of calcium sulphate it came up to mentioned effect and by this against draft of substantial reduction of alite in arisen clinker.
The sharper torrid modes 1400oC/5 hours to 1450oC/3 hours has shown as suitable, whose thermal energy is enough to perfect alite synthesis, but it was not insofar high yet to cue consolidation of structure and by this the reduction of reactivity too.
CO2 emission saving, expressed as reduction of carbon dioxide content in given raw powder in relation to similarly drafted raw mixture, in which the whole lime would come only from calcium carbonate, was calculated in level 6,5 % for this clinker.
ISSN 0008-8919 [2] EN 197-1 ed.2, Cement - Part 1: Composition, specifications and conformity criteria for common cements [3] Poon C.S., Kou S.C., Lam L., Lin Z.S.: Activation of Fly Ash/Cement Systems Using Calcium Sulfate Anhydrite (CaSO4), Cement and Concret Research, www.sciencedirect.com, 2001 [4] Chemical Comparison of Fly Ash and Portland Cement, Headwaters Resources, Data 2007 [online], www.flyash.com [5] Sebök, T, Šimoník J, Kulísek K, The compressive strength of samples  containing fly ash with high content of calcium sulfate and calcium oxide, Cement        and Concrete Research 31 (2001) 1101 – 1107
[7] Fly Ash – Types and Benefits, Headwaters Resources, Data 2007 [online], URL: www.flyash.com
Online since: September 2008
Authors: Krzysztof Wolski, Michèle Pijolat, Céline Cabet, Gouenou Girardin, Fabien Rouillard, Jerome Chapovaloff
Role of chromium in the chromia reduction.
Exception made of the point in He-In1, the experimental TA for both commercial alloys in Fig. 6 globally follow the general trend predicted through (Eq. 3) and the results obtained on Inconel 617 are in good agreement with the data from reference [9].
The experimental data at low P(CO) (bottom of the graph) show a deviation toward curves for higher a(Cr).
Besides, it was elsewhere [6] demonstrated for Inconel 617 that the partial pressure of water vapour during step 1 (oxidation at 850°C) influences the value of TA, but in Fig. 6 we gather data irrespective of the atmosphere moisture in the range 0.5-6 µbar.
Therefore, the relevant thermodynamic data have to be the interfacial activities which could be significantly different from the bulk values.
Online since: March 2012
Authors: Jia Wang, Wei Zhang, Xue Zheng Chen, Peng Fei Yin, Zheng Kai Xu, Bing Han
The impedance data can be collected over a broad frequency range.
This part of the electrochemical impedance data interpretation was critical since several equivalent electrical circuits can be used [12-14].
The stage comparison of three different coatings deterioration processes types/stages medium penetration corrosion initiation corrosion extension Coatings failure (<106Ω.cm2) 4-4h 1-13d 14-15d 16-20d 16d 12-12h 1-18d 19-22d 23-68d 68d Immersion 1-14d 15–40d 41-57d 57d 3.3 Monitoring results of the coating capacitance Cf and coating resistance Rf By comparison, the Rf and Cf parameters extracted from EIS data are presented in Fig. 6 as a function of exposure time.
The changes in (a) coating resistances Rf and (b) coating capacitances Cf as a function of exposure time under wet-dry cyclic and immersed tests For the 4-4h and 12-12h cycles, one of the notable phenomenon was that, despite the data dispersion, Rf were always higher and Cf were lower than the immersed during period Ⅰ.
Tsuru T, An investigation on oxygen reduction under thin electrolyter layer using kelvin probe reference electrode, J.
Online since: July 2014
Authors: Bishwajeet Pandey, S.M. Mohaiminul Islam, Tanesh Kumar, Narpath Singh, S. Mahbubul Alam, Teerath Das
This reduction achieved by mapping control signal to control port in place of mapping control signal to LUT (Look Up Table) input.
Therefore, FPGA maker are not able to specify the power dissipation information of their package, technology, device and family in the data sheets because the power dissipation of FPGAs is related to resource utilization, logic block usage, synthesis, mapping, placement and route (PAR)[3].
Conclusion On 10 MHz, when we map signal to control port, there is 33.33% reduction in dynamic power dissipation in compare to mapping signal to LUT input, which is 1mW.
On 10 GHz, when we map signal to control port, there is 36.49% reduction in dynamic power dissipation which is 956mW.
On 1 THz, when we map signal to control port, there is 36.9% reduction in dynamic power dissipation in compare to mapping signal to LUT input, which is 96.603W.
Online since: August 2013
Authors: Yang Du, Jian Jun Liang, Pei Wen Wang, Yi Hong Ou, Hai Bing Qian, Xin Sheng Jiang
By adjusting the gasoline vapor and oxygen, the inlet temperature and flow rate, collecting data of temperature difference between outlet and inlet as well as the change of gas mixture, the study analyzed the various factors in the catalytic combustion process, and optimized the process control parameters.
Meanwhile the hydrocarbon concentration’s reduction in the tank also exists in combustion process, which runs the risk of explosion.
Table 1 The main parameters of catalyst Parameter Numerical data 1 Average particle size mm φ 2.5~3.5 2 Specific surface area m2/g 200.00±30.00 3 Bulk density g/ml 0.62±0.05 4 Particle density N/particle ≥85.00 5 Particle size distribution % ≥96.0 6 Pd content % 0.50±0.02 The gasoline vapor volume fraction of catalytic combustion The outlet temperature is one of the most important parameters of gasoline vapor catalytic combustion process.
Oxygen concentration reduction affects T50 much less than T90.
The reduction of the oxygen concentration has less effect in the initial stage of combustion than the later stage.
Online since: August 2011
Authors: Tonio Buonassisi, Mariana I. Bertoni, Jasmin Hofstetter, Carlos del Cañizo, Jean François Lelièvre, David P. Fenning
For an as-grown Fe concentration between 1014 cm−3 and 1015 cm−3, this enhanced Fei reduction results in an appreciable increase in the electron lifetime.
The measured data together with the theoretical curve of SRH recombination at Fe-B pairs are shown in Fig.1(a).
Good agreement between the theoretical curve and the experimental data points confirm that Fei keeps being the lifetime-limiting defect in most as-grown p-type mc-Si wafers nowadays.
During 20 min PDG at 850 �C an Fe reduction of up to 60 -80 % can be achieved for as-grown Fe concentrations .3·1014 cm−3 and precipitate radii .20 nm.
On such wafers, an efficient reduction of the Fei concentration can be achieved during standard PDG.
Online since: August 2013
Authors: Ruzena Kralikova, Miroslav Badida, Miroslav Rusko
The basis of Six Sigma is a detailed knowledge of customer requirements, disciplined use of facts and objective data, statistical analysis and ongoing efforts focused on optimizing business processes.
Six Sigma is mainly based on understanding customer needs and expectations, using the facts, data and statistical analysis and a thorough approach to managing, improving and creating new business, production and service processes.
Pareto Diagram Pareto diagram is a bar chart for discrete data, indicating the frequency of non digital data.
The company noted that while Lean Six Sigma projects focused on improving operational efficiency and product field, direct reductions in energy use, air emissions, waste reduction, greenhouse gas emissions, and other environmental impacts also coincided.
The implication of environmental performance lines to reduction of the overall environmental impacts [4].
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