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The ever-increasing power consumption and the associated consumption of non-renewable natural resources lead to an overall environmental degradation. Efforts to increase the energy efficiency, to reduce greenhouse gas emissions and the sustainable use of natural resources have a significant potential for improving the environment and its preservation for future generations. To realize this potential,...
Electric vehicles have the potential to substitute for conventional vehicles and to contribute to the sustainable development of the transportation sector worldwide, e.g. reduction of greenhouse gas and particle emissions. There is an international consensus that the improvement of the sustainability of electric vehicles can only be analysed on the basis of life cycle assessment (LCA) including the...
ICTs have a direct impact on the environment, consuming energy, materials and producing e-waste. But ICTs are the major enabling technology for mitigation of environmental impacts across all economic sectors. ICT applications and services can help limit energy use and material consumption. In other words ICTs can contribute in achieving more sustainable lifestyles, consumption and production. The...
In this paper, the vehicle cycle environment impacts of a mid-size passenger car in China is performed, with a special focus on the primary energy consumption and greenhouse gas (GHG) emissions. The vehicle cycle analysis results show that the energy consumption and GHG emissions of a passenger car in China are about 91.1 GJ and 11.5 ton per vehicle, respectively. And coal as the main process fuel...
This paper analyzes the reasons of phenomenon of resources and energy waste, which will increase the CO2 emission, in the first 3 stages of the construction: the feasibility study stage, the designing stage and the construction stage. And then relevant suggestions are given.
The basic idea of H2-C mixture reduction reflexes using hydrogen as main reductant and carbon as main heat generator in iron bath smelt reduction reactors on purpose to cut down total energy consumption and CO2 emission, protect the environment and take advantage of the new energy source. First of all, the calculation of mass and energy balance is very important for the smelt production, optimization...
The forming process and forming principle of the pelleting process are analyzed first, and then the model of the energy consumption on pelleting is presented. Based on the model, the relationship between the die speed and the energy consumption of pelleting is calculated and analyzed. At last the experiments were carried out. It is shown that with the increase of die speed, the extrusion force and...
High production energy consumption of medium density fiberboard restricted enterprise economic benefits seriously. In this paper, medium density fiberboard production characteristics was analyzed, energy-saving technology of medium density fiberboard enterprise was disscused. The analysis showed that establishing “energy plant” to reach power cascade utilization by using integrated combustion technology...
In this paper, synergetic control strategy based on material flow, energy flow and information flow for large-scale systems is applied to the iron and steel industry with high-consumption, high energy consumption and high pollution, so that steel enterprises' own synergetic mechanism system is constructed, and finally the process of informatization of steel enterprises is achieved and improved.
Based on the mathematical model of the Input-output, energy and environmental efficiency models for iron and steel enterprises had been set up and used for analyzing energy consumption and environmental load. Models clearly show the various factors affecting on energy and environmental efficiency. Further analysis showed that the use of residual heat and energy power generation technology, such as...
The keywords Green IT and Green Computing indicate a paradigm shift of computing. Development of existing and new technology should no longer proceed at the expense of environment. This is also true for automation. Nowadays, one important goal of automation is to optimize the complete work and material flow under the essential constraints of energy consumption, quality and throughput. As a matter...
The energy consumed to produce and purify a kilogram of laser vaporization SWCNTs at the laboratory scale was found to be 0.13-0.19 GWh/kg under standard production conditions, with 0.114 GWh/kg coming from electrical energy. Most of the energy consumption results from thermal and resistive losses of the laser and single zone furnace in use. The time and temperature of final oxidation of the material...
Due to their unique electrical, thermal, and mechanical properties, single wall carbon nanotubes (SWCNTs) have attracted considerable interest for use in a number of applications such as lithium ion batteries, fuel cells, and conductive wiring. However, the energy required to synthesize and purify SWCNTs in the manufacturing phase must be considered in order to fully realize the benefits in the use...
Environmental policy making, green product rating, and marketing activities seem likely to drive the utilization of eco-assessments in the near future. In this paper we show from the example of EuP Preparatory Studies and other policy supporting studies some characteristics of ICT eco-assessments on different economical levels. We argue that the high diversity of individual cases coupled with technology...
Energy optimization model and energy balance model of iron and steel enterprise was set up aim at produce its energy consumption due to the current urgent status of energy saving of iron and steel industry in China. It analyzed the regulation of energy consumption influence by material flows under various conditions. Further, energy comprehensive optimization model of TongGang Group Company was put...
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