Applied Mechanics and Materials Vols. 71-78

Abstract: Today’s industrial design has gone beyond the traditional product design. China is in the transfer process from the world's manufacturing plant to the world's manufacturing center. Chinese manufacturing industry is transiting from mass production and mass marketing to brand competition and design competition; China’s industrial design is moving from design for products and design for industrial enterprises to design for the market and users, and from basic industries- and technology-oriented model to sales- and marketing-oriented and brand- and user-oriented model. The importance of implementing user-friendly design principles and applying ergonomic principles to sustainable design in Industrial design is increasingly becoming the consensus of the industries. In today's information society, the media industry is charged with an irreplaceable task of information manufacture and dissemination. A variety of devices (including electronic, optical, mechanical equipment and instruments, and even household facilities and equipment, etc.) used by the modern media industry need the direct contact, operation or use of the operator. Design and manufacture of these devices need to apply modern ergonomic design theory and research results. In this paper, the importance of ergonomics, the features and research aspects of modern ergonomics, developing trends of ergonomics, and the application of ergonomics in the media industry are described.

Abstract: Air enthalpy method is used in the contrastive experiment of the new condenser and the common wing-pipe heat exchanger of family air-condition. The refrigerating capacity and EER (Energy Efficiency Ratio) are obtained by the experiment. The conclusion of the experiment shows that the new condenser with small volume and diathermanous area can create more refrigerating capacity, but the total power consumption is basically unchanged, so the EER improved. This kind of all aluminum heat exchanger is the ideal substitute of family air-condition’s wing-pipe heat exchanger.

Abstract: A solar air drying system including solar air collector, drying cabinet and air blower for notoginseng drying has been constructed and tested. Two identical air solar collectors with two air channels, V-groove absorption heat plates and a single glass cover have been employed. The results of test show that the solar air collectors can obtain a good thermal performance in winter season. When the air flow mass rate is fixed at 0.0597kg·s^-1, the maximum values of thermal efficiency and outlet air temperature are 76.0% and 62.2°C, respectively. The experimental analysis between two sampling notoginseng drying suggests that the solar drying is very effective, and the drying time has been shorten to about 440 minutes from 990 minutes of the traditional drying by sun. It is also observed that using the solar drying system notoginseng has a higher quality than traditional drying method.

Abstract: A V-trough PV system with polysilicon cell array and super cell array has been constructed and tested. Open-circuit voltage, short-circuit current, output power, fill factor and influence of temperature on V-trough PV concentration system have been analyzed. The results indicate that the output power of 10 pieces of polysilicon cell array is 6.198W and it is 1.21 times as that of non-concentration condition. Maximum output power of V-trough PV system with water cooling increase to 8.28W and power increment rate reach 62.67% compared with the non-concentration PV system. For the super cell array with no water cooling, the maximum output power of V-trough PV system varies from 7.834W to 14.223W. The results of this work provide some experimental support to the applications of the V-trough PV system.

Abstract: This paper discusses the highway construction disasters and the impact, then analyzes the mechanism of highway construction hazards, which is mainly about the leading to disaster causes and the composition of its specific factors, finally, based on the above-mentioned disasters mainly discusses the construction of early warning system for highway hazards, mainly includes disaster warning organization mode and operation mode, this mode could reduce the hazards arising or reduce economic losses through the model.

Abstract: Analyze the opportunistic behavior between China and Japan in energy security cooperation with game theory. There are two types countries in the process of the cooperation, they are opportunistic and cooperating countries. To use of evolutionary game theory model of cooperation and energy cooperation between China and Japan in the opportunistic behavior analysis, the results show that under certain conditions, cooperation can be avoided the incidence of opportunistic behavior, if not satisfy the relevant constraints, the co-operation will inevitably.

Abstract: In order to fulfill future emission standards for middle and heavy-duty vehicles like state Ⅳ and Ⅴ, advanced measures on exhaust gas and engine functionality are required. Selective Catalytic Reduction (SCR) technology is the unique technology currently which can improve the emission and reduce fuel consumption simultaneously. Firstly the reductants and its chemical reactions, SCR system configurations and its working principle and urea dosing control strategy are introduced. Then tests are conducted on a diesel engine with SCR system at bench. The results of ESC cycle show that NO_x emission is decreased by more than 67% with the open-loop control strategy. Additionally, the urea and fuel consumption and ammonia leakage have been compared and analyzed respectively, the experiment data indicates that the urea water solution consumption ratio is only 5.7% of fuel for this SCR system, while its average ammonia slip is below 5 ppm.

Abstract: Modified peanut husk was used as an adsorbent to remove chrome blue-black from its aqueous solution. Results of kinetic experiments demonstrated that the adsorption was effective and rapid.Three different kinetic models (i.e.,intraparticular diffusion model, Lagergren-first-order and second-order equations) were used to describe the adsorption mechanisms. The adsorption of chrome blue-black on modified peanut husk was not controlled by intraparticular diffusion. The kinetic adsorption data can be well simulated by the second-order equation and the adsorption might be rate-limiting controlled. The suitability of the adsorbent was tested by fitting the equilibrium data with Langmuir and Freundlich isotherms, which gave good fits with both isotherms.

Abstract: As Future emission limits of diesel engines is more stringent, model-based control strategy of selective catalytic reduction (SCR) is becoming necessary. Therefore, a catalytic converter mathematical model for simulating selective catalytic deNOx reaction is very important. In this paper, a one dimension catalytic converter mathematical model that consists of thermal energy model, SCR reaction model and NH₃ storage model for simulating urea-SCR reaction process is presented. Based on this model, the impact of temperature and gas hourly space velocity (GHSV) on NOx conversion efficiency has been researched. According to the results of simulation, it shows good agreement with experimental data.

Abstract: The performance of upflow anaerobic sludge blanket (UASB) fed with three metabolic intermediate (acetate, ethanol, and propionate) respectively was studied. The degradation of metabolic intermediate were investigated to discuss the reason for propionate inhibition problem in anaerobic treatment. The hydraulic retention time (HRT) in the reactors started with 8.0h.The yield rate of biogas were 237ml/gCOD, 242ml/gCOD, 218ml/gCOD for acetate, ethanol and propionate, respectively when finishing start-up under OLR of 5.0 kgCOD/(m³·d) (HRT=9.6h).The HRT remained constant 9.6h,and the substrate concentration was gradually increased from 1,000 to 16,000mg/L as COD,and the organic loading rates(OLR) was from 3.0 to 40.0 kgCOD/(m³·d).The maximum propionate concentration was 41.6 gHPr-COD/L at the organic loading rate of 43.9 kgCOD/(m³·d) (HRT, 9.6h) as well as acetate and ethanol.