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The object of the study is the totally reboiled reactive distillation columns. In the current work, transfer function based process models exhibits the dynamics and operation of TRRDCs. In the reaction operation and the separation operation, there are the special topological configuration and the intricate interplay, resulting in under-damped step responses. The under-dampness can be substantially...
With reference to the disproportionation of trichlorosilane to silane, a three-stage consecutive reversible reaction with a rather unfavorable reaction kinetics, in-depth comparison in steady-state performance is performed between the column with a single reactive section and those with multiple reactive sections, adopting the equal number of trays and the equal amount of catalyst. The reactive distillation...
Based on the result of different areas of the country's last name number and proportion in 2007, we can investigate the spatial correlation of surnames in different space. Combined with different surnames in the spatial distribution, we also study the characteristics of population diffusion difference in different areas. Chinese last names in a strong regional distribution, some surnames are mainly...
Nanofluids refer to dilute liquid suspensions of nanoparticles. Over the past decade, such materials generated lots of excitement mainly because a number of researchers reported drastic thermal conductivity enhancement with very small particle loadings. This also sparked hot debates on the underlying physics governing the experimentally observed phenomena. This paper gives an updated review on the...
This paper presents a three-layer Artificial Neural Network as the short-term load forecasting model adopting the fastest back-propagation algorithm with robustness, i.e., Levenberg-Marquardt optimization, and moreover, the momentum factor is considered during the learning process. Based on predicted data by aforementioned model, size determination of energy storage system in terms of power rating...
To search for the optimum working condition of coal partial gasification for co-production of hydrogen and electricity, a gasifier has been simulated and studied by the use of an Aspen Plus model. Oxygen-to-coal ratio, steam-to-coal ratio and steam temperature are optimization variables of the system. The optimization variables impact on syngas yield, syngas concentration, system exergy efficiency,...
An experimental study was carried out to investigate the structural stability of ethylene glycol based titanium dioxide nanoparticle suspensions (nanofluids) prepared with two-step method. Effect of particle concentration, fluid temperature, shear rate and shear duration were investigated. It was found that the temperature resolved thermal conductivity of nano fluid-, followed die trend of the base...
After introduced the concept and the characters of technical merger and acquisition (abbreviated as M&A below), this article discussed the pricing of technical M&A with the real option method. The growth option pricing model and cooperative option pricing model were put forward to fit to the pricing of technical M&A. We also discussed how to apply these models by case study.
Based on the empirical study about long-term wealth effect in technology Merger and Acquisition (abbreviated as M&A below), this paper showed that such kind of M&A can cause negative wealth effect significantly in long term, which reflected its high risk. And by analyzing the factors which impact the Buy and Hold Abnormal Return (abbreviated as BHAR below) in the following three years after...
A methodology to predict the thermal conductivity of nanofluids based on the suspension rheology is proposed and experimentally validated by using four types of nanofluids; the suspensions of titania nanoparticles and titanate nanotubes in water and ethylene glycol liquids. Such a methodology lies in the use of suspension rheological behaviour to determine the microstructure of nanofluids, which is...
As the research and development (R&D) process indeed is a kind of parallel and staggered activities between technology and marketing, and based on the research of Paul Schumann and Derek Ransley and Donna Prestwood (1995), this paper proposes the double dimension control method for performance measurement on R&D process. First, the dissertation introduces the advantage of this method. Then,...
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