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Online since: January 2017
Authors: M.M. Rahman, K. Kadirgama, D. Ramasamy, M.M. Noor
The sensors were integrated by using data acquisition system from Agilent U2542A.
Data Acquisition System 9.
A pressure validation was done, by firstly comparing the trace of experimental data with the CFD.
Almost all points of the CFD coincides with the experimental data with 2% error.
As the exhaust stroke was not modelled with CFD, the data for exhaust stroke was neglected in the study.
Data Acquisition System 9.
A pressure validation was done, by firstly comparing the trace of experimental data with the CFD.
Almost all points of the CFD coincides with the experimental data with 2% error.
As the exhaust stroke was not modelled with CFD, the data for exhaust stroke was neglected in the study.
Online since: May 2012
Authors: Jing Sun, Hongbo Liu, Li Sun
Based on the prediction principle of the surplus service life of building’s durability and through prediction of atmospheric climate change, the data demonstrate the atmospheric environment effect will shorten the life of the building.
Conclusions Through the above data analysis, the following conclusion can be drawn.
Therefore, on one hand, environment protection, energy saving and emission reduction brook no delay; on the other hand it is important we continue to study how to improve the quality and extend the service life of existing buildings.
Conclusions Through the above data analysis, the following conclusion can be drawn.
Therefore, on one hand, environment protection, energy saving and emission reduction brook no delay; on the other hand it is important we continue to study how to improve the quality and extend the service life of existing buildings.
Online since: August 2013
Authors: Ahmad Razimi Mat Lazim, Abd Rahim Abu Bakar, Mohd Kameil Abdul Hamid, M.A. Nasaruddin
Different rotational speed of disc brake was selected and the experiments squeal noise data was collected and analyzed using the Fast Fourier Transformation (FFT) analyzer.
Data Acquisition System (DAQ) was used to collect information from the transducer, and process it to suitable data for display or storage outcomes.
Quaglia, “Disc Brake Squeal: Mechanism, Analysis, Evaluation and Reduction/Prevention”, SAE-Society of Automotive Engineers, 2006 [2] M.
Data Acquisition System (DAQ) was used to collect information from the transducer, and process it to suitable data for display or storage outcomes.
Quaglia, “Disc Brake Squeal: Mechanism, Analysis, Evaluation and Reduction/Prevention”, SAE-Society of Automotive Engineers, 2006 [2] M.
Online since: September 2013
Authors: Shao Fen Lin, Zi Kai Chen, Xu Guang Ding
And the data acquired by speed sensor and torque sensor are transmitted to IPC via signal converter.
Conventional data acquisition can be divided into DC-sampling and AC-sampling.
It is composed of 6 sub-systems, and each of them contains a thread pool and the related task queue to facilitate the testing system collecting real-time data, analyzing background data, displaying graphical interface and inputting response by users respectively.
The upper computer system can realize the synchronous acquisition of input voltage and current, accurate calibration of the sensors, storage of the parameters like voltage, current, torque, speed, and etc, fast data processing and power calculation and display, playback and printing of storing data.
The comparison of measurement data between the test system and Fluke Multimeter is shown in Table 2.
Conventional data acquisition can be divided into DC-sampling and AC-sampling.
It is composed of 6 sub-systems, and each of them contains a thread pool and the related task queue to facilitate the testing system collecting real-time data, analyzing background data, displaying graphical interface and inputting response by users respectively.
The upper computer system can realize the synchronous acquisition of input voltage and current, accurate calibration of the sensors, storage of the parameters like voltage, current, torque, speed, and etc, fast data processing and power calculation and display, playback and printing of storing data.
The comparison of measurement data between the test system and Fluke Multimeter is shown in Table 2.
Online since: September 2011
Authors: Lin Tong Wang
Representative data for the catalysts prepared in an air atmosphere are shown in Fig. 1.
Temperature programmed reduction using hydrogen indicates that there may be some mixed oxide formation in the calcined catalyst.
The catalysts were all similar by transmission electron microscopy, but subtle differences indicate that copper/zinc oxide solid solutions were formed and this is consistent with the evidence from temperature programmed reduction.
Temperature programmed reduction using hydrogen indicates that there may be some mixed oxide formation in the calcined catalyst.
The catalysts were all similar by transmission electron microscopy, but subtle differences indicate that copper/zinc oxide solid solutions were formed and this is consistent with the evidence from temperature programmed reduction.
Online since: May 2011
Authors: Lei Zhang, Yong Ying Jia
According to the data provided by National Development and Reform Commission, Industrial boiler burning 1 ton of standard coal can produce CO2 2620 kg, SO2 8.5kg, NOX 7.4 kg.
Pollutant emission reduction CO2 SO2 NOx 1t Standard coal emissions/kg 2620 8.5 7.4 Daily emission reductions /kg 550200 1785 1554 Result (1) The performance coefficient of heat pump system—COP, in winter is 5.4 and in summer is 5.4, the heat pump system can save 210t fire coal every year, and it is significant energy savings
Pollutant emission reduction CO2 SO2 NOx 1t Standard coal emissions/kg 2620 8.5 7.4 Daily emission reductions /kg 550200 1785 1554 Result (1) The performance coefficient of heat pump system—COP, in winter is 5.4 and in summer is 5.4, the heat pump system can save 210t fire coal every year, and it is significant energy savings
Online since: May 2011
Authors: Jing Liu, Fei Ma, Ying Li
The weather data of a typical summer day in Beijing is used in this investigation.
The largest reduction of COP caused by anthropogenic heat is only around 1%.
Fig.2 Comparison of outdoor temperature between with and without air conditionings ( air conditioning set point is 26℃) Fig.3 Highest outdoor temperature and heat discharge from air-conditioning at different set-point temperature Table 3 The effect of anthropogenic heat on COP of air conditioning system Time COP (with anthropogenic heat) COP (without anthropogenic heat) Reduction of COP caused by anthropogenic heat [%] 8 3.03 3.02 0.36 9 2.99 2.96 0.96 10 2.94 2.91 1.05 11 2.90 2.87 1.01 12 2.87 2.84 0.94 13 2.84 2.81 0.83 14 2.82 2.80 0.75 15 2.84 2.81 0.79 16 2.87 2.84 0.86 17 2.92 2.89 0.96 Conclusion In this work, the effect of anthropogenic heat on local heat island intensity and the performance of air conditioning systems are investigated.
The largest reduction of COP caused by anthropogenic heat is only around 1%.
Fig.2 Comparison of outdoor temperature between with and without air conditionings ( air conditioning set point is 26℃) Fig.3 Highest outdoor temperature and heat discharge from air-conditioning at different set-point temperature Table 3 The effect of anthropogenic heat on COP of air conditioning system Time COP (with anthropogenic heat) COP (without anthropogenic heat) Reduction of COP caused by anthropogenic heat [%] 8 3.03 3.02 0.36 9 2.99 2.96 0.96 10 2.94 2.91 1.05 11 2.90 2.87 1.01 12 2.87 2.84 0.94 13 2.84 2.81 0.83 14 2.82 2.80 0.75 15 2.84 2.81 0.79 16 2.87 2.84 0.86 17 2.92 2.89 0.96 Conclusion In this work, the effect of anthropogenic heat on local heat island intensity and the performance of air conditioning systems are investigated.
Online since: October 2010
Authors: Ying Zhang, Jin Hua Xu, Shui Sheng Xie, Mao Peng Geng, Hong Min Guo, Hai Bo Zhao
As the data shows, the AZ31B magnesium alloy thin strips obtained by Semi-solid rheocasting-rolling method have good rolling property, and the reduction rate can come to 57%, that opened the door for producing the termination product.
The reduction rate can come to 57% when hot rolled at the temperature of 360 degrees.
The reduction rate can come to 57% when hot rolled at the temperature of 360 degrees.
Online since: November 2011
Authors: Cheng Ji Deng, Jun Li, Wen Jie Yuan, Hong Xi Zhu, Chao Pan
Carbothermal reaction has been extensively used since long for reduction of metallic oxides as well as for beneficiation of several minerals.
While there is the peak with highest intensity at 2θ = 31.78° corresponding to (101) plane in XRD JCPDS data file No. 35-1072.
The reason may be due to the influence of excess aluminum on the reduction of kaolin grog.
While there is the peak with highest intensity at 2θ = 31.78° corresponding to (101) plane in XRD JCPDS data file No. 35-1072.
The reason may be due to the influence of excess aluminum on the reduction of kaolin grog.
Online since: June 2014
Authors: Ming Yu Wang, Jing Wen Song, Da Wei Tang
The solute concentration reduction rate caused by the vertical fractures is larger than the horizontal fractures by three or four orders of magnitude.
(2) Based on the statistical results of the experiment data from six groups of different fracture configurations, if the structure and permeability of the porous media remain unchanged, overall permeability and flow features of the fracture structure are significantly controlled by fracture configurations
(3) The solute concentration reduction rate caused by the vertical fractures is larger than the horizontal fractures by three or four orders of magnitude.
(2) Based on the statistical results of the experiment data from six groups of different fracture configurations, if the structure and permeability of the porous media remain unchanged, overall permeability and flow features of the fracture structure are significantly controlled by fracture configurations
(3) The solute concentration reduction rate caused by the vertical fractures is larger than the horizontal fractures by three or four orders of magnitude.