Advanced Materials Research Vol. 773

Abstract: This paper focus on energy consumption and safety function of servo drive, and analysis of the safety integrated functions of the servo drive and its energy consumption features. Servo drive with "safety energy efficiency" concept was proposed based on motion control level. This paper has analyzed the energy consumption distribution characteristics formula of the servo drive architecture, and then, explain the characteristics of safety integrated function from the control path of servo drive. With analyzing the distribution of energy consumption and its safety integrated function, the safety energy efficiency model" is established, which reveals the relationship between servo drive's safety features and energy efficiency. Finally, the application prospects safety energy efficiency model was shown from the view of practical point.

Abstract: Government attaches great importance to energy saving issue has caused. Library as densely populated public places, its energy consumption is 5 to 15 times the average residential. Many factors involved in libraries energy saving, such as air-conditioning systems, lighting systems and other electrical systems. The library has great potential for energy saving. This paper studies how to apply the smart lights technology in the library energy-saving. Based on the analysis of existing library monitoring system, we propose a possible smart lights method which will be used in the library energy-saving. Effective methods and strategies of smart light energy-saving were researched. Smart LED lights and wisdom lamp holders, hardware and software are designed and implemented which was used in the library energy-saving. The smart LED lights were used in library study room lighting reconstruction. Practice shows that the energy-saving of new lighting system effective. Theoretically for the new technology could bring more than 30% of the energy-saving effect.

Abstract: Accompanying the development of the social economy, air conditioning systems have been extensively used in the scientific research, production, commerce and daily life. At the same time, the energy consumption of the air conditioning system continuously increases, and the costing of the air conditioning system users rises. The air conditioning systems have become the primary producers of the environment pollution. According to the using process and result analysis of the air conditioning system equipments, this thesis explores the effect of energy conservation and emission reduction. The main purpose of the thesis applies the ideas of energy conservation and emission reduction into the using process of the air conditioning system equipments.

Abstract: When adjusting the borler combustion, the borler efficiency need to be constantly monitored.The traditional method of calculating boiler efficiency is complex.Based on the heat balance method,the main factors of influencing boiler efficiency was analysed deeply and the artificial neural network on-line monitoring model of boiler efficiency was established to predict boiler efficiency accurately and constantly in this paper. After precise analysis and tracking, the input variable for the artificial neural network on-line monitoring model of boiler efficiency was selected, so as to avoid larger error caused by the rough selection of input variable in the previous artificial neural network. At last,based on a 600MW boiler,the borler efficiency was predicted in this paper.we can easily know from the prediction result that the artificial neural network on-line monitoring model of boiler efficiency can predict the boiler efficiency accurately and constantly at a wide range condition.

Abstract: In this study, an environmental comparison of hybrid, fuel cell and gasoline passenger vehicles is performed with the application of life cycle assessment (LCA) methodology. Unlike in a classic LCA, the vehicle cycle and fuel cycle of vehicles have both been modeled to cover vehicles with the full life time.According to the assumptions, the total energy consumption of the hybrid and fuel cell vehicles are respectively 27% and 37% lower than that of the gasoline vehicle. The GHG emission of the hybrid and fuel cell vehicles are respectively 27% and 44% lower than that of the gasoline vehicle. The results of the study show that the FCV is the one that presents the lower LCA energy consumption and GHG emission compared with the HEV.

Abstract: We report first principles studies of p-type doping properties of ZnMgO wide-gap semiconductor alloy. The band gaps of ZnMgO and doped ZnMgO are found to be controllable, and hence one can tailor the band gap of ZnMgO or doped ZnMgO to design devices by controlling Mg composition. According to defect formation energies analysis, the solid solubility of acceptor in ZnMgO can be improved by co-doping technology. The acceptor level of N becomes shallower by Al-N co-doping in ZnMgO, hence the hole concentration is enhanced. Combining the results of defect formation energies and acceptor level of N, we can draw the conclusion that p-type doping can be easier realized by Al-N co-doping in ZnMgO than in ZnO.

Abstract: In this paper, the contrast test has been done on the brake linings that have been made by water granulating technology. As a result, by contrast with the brake linings that have been done at the same material and producing technology, it was preliminary demonstrated that the apparent porosity of the brake linings that have been made by the granulating technology could be enhanced greatly, so on the hot-pressing process, products exhausting has been easy, the die cavity volume could be decreased, the hot-pressing time could been shorten, the production efficiency could be enhanced, the natural frequency of the braking lining could be reduced, the possibility of the braking noise could be decreased.

Abstract: Cobalt modified rectorite (Co@R) was prepared from sodium saturated rectorite (Na-R) with a two-step method of microwave-assisted ion-exchange and in-situ hydrolysis. The morphology, composite structure and pore properties of Co@R were observed with scanning electron microscopy (SEM), small angle X-ray Diffraction (XRD) and nitrogen adsorption-desorption isotherm. The adsorption ability and catalytic behavior of Co@R were studied with methyl blue (MB) as probe contaminant. The interstratified layered Na-R was stripped fully and the resultant material remained the layered structure with a slit-shaped pore between the layers of lamellar particles. The interlayer spacing d₀₀₁ of rectorite was increased successfully from 2.23 nm up to 2.72 nm. The Co@R has a BJH pore volume of 0.091 cm³ g^-1 resulting from the macropores and BET specific surface area of 28.5 m² g^-1. A set of test has shown that Co@R possesses the potential to become a good adsorbent and catalyst for activating peroxymonosulfate (PMS), removing organic pollutants efficiently.

Abstract: Based on the finite element numerical simulation technology, taking marine crankshaft 305 as an example, the upset-bending forging simulation and comparative analysis for heavy crankshaft were done, which will be an important reference for the production practice. Results indicate that processing with bar-stock as the blank will be better than that with stepped shafts in case of forming quality and volume of raw material, but requires larger forming force.

Abstract: The curves of cylinder displacement and pressure can be obtained through the wall brick press autoclaved brick experiment, which can determine the powder compaction equation, including suppression, friction and the characteristics of stripping, modify Kawakita equation, and improve the calculation precision, get the product of the coefficient of friction and lateral pressure and its variation law with compression rate; .in order to provide the basis for the design of pressure machine and mould and optimization of pressing technology