Abstract: Composite power supply technology is an efficient way to solve the energy performance problem of EV, it makes battery with high energy density and super capacitor which has the advantage of high power combined with together. Using the super capacitor characteristics of instantaneous large current charge and discharge, when EV in starting, accelerating or climbing, provide the actuating motor for peak current; and when in braking, absorb the generator feedback current, so as to avoid the battery are damaged, prolong its service life, and realizes the braking energy efficient recovery. In this paper according to the characteristics of battery, super capacitor, and bidirectional DC/DC converter, use backward simulation model of electric vehicle to perform drive cycle. The results show that, the work efficiency of battery is enhanced by using the super capacitor, and to make the composite power supply obtain a higher braking energy recycling efficiency.
Abstract: Based on the characteristics of high fluctuation and periodicity of output power during working process of wheel loader, hybrid drive technology can provide a solution for fuel saving and fuel reduction of wheel loader through power adjustment function and energy recycle feature. Aiming at power output motion of wheel loader duty cycle, 7 means for hybrid wheel loader to save fuel have been proposed; contribution to save fuel and easiness to realize the goal under current technical conditions of each means has also been assessed. It is considered that there are two categories of wheel loader energy saving technology: one is to increase fuel utilization rate, and the other is improve transmission efficiency of torque converter. However, realizing one of these two aspects can not save fuel ideally; improvement in both aspects will bring satisfactory energy materials saving effects.
Abstract: Since energy saving and energy materials is becoming a hot theme, the new energy industry is developing quickly in China, but it is vague how to develop in the future. So a technology foresight to new energy industry is important for energy saving and energy materials. In this paper, an indexes system for technology foresight of new energy industry is built. An empirical study is given through Shaanxi’s data, and the technology fields and tasks of new energy industry during future five years are forecasted by questionnaire survey and Delphi method. This study can provide government helpful advices to regulate development trend and adjust structure of energy industry and energy saving.
Abstract: Power integrated circuit chip(ICC) is one kind of environmental material for energy saving. In order to analyze the reliability on environmental protection measures of integrated circuit industry, a proposed ICC project was taken as an example to investigate and analyze its engineering features and processing measures on production waste water, waste gas, waste solid and liquid, noise control and plant greening. It showed that there were 5 kinds of production wastewater containing acid & alkali, fluorine, ammonia, grinding impurity and organic respectively and 4 kinds of waste gases i.e. acid/alkali, organic solvent and process exhaust waste gases. Pollution treatment measures for wastewater, sewage and waste gases were mature technically and were effective with high efficiency. Treated wastewater can meet state discharge standards. Gas pollutants could be removed by around 90%. Dangerous waste solids and liquids would be delivered to the qualified company. Measures of vibration reduction, noise elimination, sound absorption and insulation etc. would be taken to control noises from power station and create a good environment. This work is an indispensable part of environmental impact assessment on IC industry.
Abstract: Printing quality mainly depends on reproduction of the color and level, paper and ink influence the reproduction of color and level. In this paper, it is mainly through measuring the paper smoothness, whiteness, opacity, glossiness etc. parameters, using print press printed sample of different paper, Measuring density of color piece, calculate the grayscale, color deviation and color efficiency, and draw color wheel figure, thus obtaining conclusion that special material paper performance influence color reproduction and energy saving or material saving
Abstract: Steel pipe applications are more widely used, but there are no comparative analysises about the environmental impact and energy consum of steel pipe and its production processes. This article investigated the environmental implications of three typical steel pipe production processes based on energy materials and life cycle assessment perspective. We modeled scenarios, calculated energy consumed and six aspects which classified as GWP, ODP, AP, EP, POCP and DUST. The rank of energy consumed in descending order is C-Pipe> H-Pipe> W-Pipe. Welded steel pipe is the best energy-friendly material in term of energy consumption. The rank of impact potential according to normalized results in descending order is GWP>AP>DUST>EP>POCP>ODP. The rank of impact potential according to weight factor in descending order is AP>DUST>GWP>ODP>EP>POCP. Acid Potential is the most significant factor. The weight factor of AP is almost twice as much as that of GWP. In environmental terms, the environmental depletion index of welded pipe production process is lowest with minimal environmental impact and the cold drawn pipe production process the highest with largest environmental impact. Welded steel pipe is the best environment-friendly material in term of environmental impact. Utilization of green energy and waste heat can effectively reduce the environmental implications for both hot rolling pipe and cold drawn pipe production processes.
Abstract: Lespedeza crytobotrya is a shrub species with properties of substantial biomass and widely distributes in the desert region of China. The cellulose separated from Lespedeza after pre-treatment can be enzymatic hydrolyzed into glucose for ethanol or other chemicals production, which are important renewable fuels or raw material for other material synthesis. Moreover it also can be used for cellulosic material production. So it is necessary to evaluate the cellulose of Lespedeza crytobotrya before its utilization. In this study four cellulosic fractions were isolated by pretreatment with low severity steam and post-treatment with alkaline peroxide. They were comparatively studied by sugar analysis and the average degree of polymerization. After alkaline peroxide post-treatment, the hemicelluloses in the cellulosic fractions were removed markedly. The treatment intensity had a profound effect on the average degree of polymerization, which was increased firstly and then decreased. A combination of low severity steam pretreatment and alkaline peroxide post-treatment is an effective method for Lespedeza stalks to obtain high glucose yield.
Abstract: This study conducted the quantitative analysis on the structure change of land use in Xinchang County using Lorenz curve and Gini coefficient. The results revealed the characteristics and evolution of the county's land use structure change and suggested that the county increase the distribution rate of woodland and other ecological applications for a carbon source reduced, energy saving and ecology-conducive environment.
Abstract: In order to explore the energy land space, protect the environment, optimize the allocation of land resources, land use planning should be established based on land suitability evaluation. This paper aimed to propose the GIS spatial overlay method for the village-scale land suitability assessment and apply on Gulou Village of Taizhou City. Based on the research results, the paper pointed out the bio-energy land expansion area and proposed the coordination of environmental protection, ecological maintenance and economic construction to optimize the land resource planning and environmental protection for Gulou Village.