Advanced Materials Research Vol. 648

Abstract: The quality of highway roadbed construction which affects the overall performance of highway is the most important to the highway construction. The roadbed is the crucial part of highway engineering. Its stability directly restricts the process of the highway roadbed construction, quality and the engineering costs, and relates to the security of people's lives and property, and to the regional economic development. And the roadbed soft foundation treatment is the key to construction of subgrade, usually by apply pad chemical fiber non-woven fabrics, geotextile, glass fiber grating way to deal with soft foundation. This article is to analyze the monitoring data of the highway roadbed engineering and to study the process and means of highway roadbed monitoring[1]. Actually, it helps and guides us to deal with the highway’s soft foundation significantly.

Abstract: To monitor the precision cylindrical grinding process, an estimation of the time constant of grinding system, using acoustic emission signal, is presented during infeed period in this paper. Acoustic emission signals generated during precision grinding are sensitivity and present challenges for accurate and reliable process monitoring. Experiments demonstrate the results of the acoustic emission sensing approach in estimating the time constant. This estimation of the time constant can be used to analyze the properties of mechanical materials of the workpiece with the same grinding conditions.

Abstract: According to China's current energy present situation, the use of renewable energy, saving energy and reducing consumption has become the energy industry development should follow the basic principles. Electric boiler-ground source heat pump system as one kind of building energy saving technology, mainly in soil source heat pump renewable energy utilization. In this paper the boilers and soil source heat pump matching design and operation model research, from energy efficiency, economic and technical analysis, environmental benefit analysis into consideration, and concludes that the electric boiler-ground source heat pump system has the obvious energy saving and environmental benefits.

Abstract: This essay briefly introduces the heat pump technology, analyzes the characteristics of this technique in energy conservation and environmental protection, illustrates the feasibility and superiority of the application and popularization of the ground source heat pump in severe cold and cold areas, whose cold and heat sources are based on the Soil, finally points out problems which exist in the technology and puts forward the solution to it.

Abstract: The paper uses a large amount of data uncertainty analysis of a the Yunnan "12th Five-Year" period of low-carbon development, pointed out that economic development, eliminate backward production capacity, energy consumption and energy saving will be contradictions, and the main problem of the reality of low-carbon development in Yunnan.

Abstract: A novel flat heat pipe is put forward. The novel flat heat pipe is characteristic of its integral wick structure of microgrooves, which is made of a series of thin aluminum foils folded side by side. The thermal performance of the novel flat heat pipe under the different heat loads and incline angles has been investigated experimentally. It is found that the equivalent thermal conductivity of the novel flat heat pipe can be 12.3 times higher than that of the heat pipe material. Moreover, the novel flat heat pipe with integral micro-grooved wick has good temperature uniformity. The novel flat heat pipe can play a pronounced role in heat transfer enhancement, and be expected to be good candidates for thermal management of electronic devices.

Abstract: The design of the use of meaning law semiconductor introduced 32 bit low power processor STM32, can effectively improve the data processing and transmitting velocity storag improving the stability of the system, and can reduce the power consumption, so as to achieve the purpose of saving energy. Also uses dual channel input, one channel is used for collecting the known frequency and amplitude of the waveform, the other channel is a collection of changes in the waveform, in practical application can be cut, thus solving the fixed waveform acquisition channels are relatively simple, and the variable waveforms that are relatively complex contradiction, make the system clean and stable.

Abstract: After a large number of distributed electricity energy has been accessed to network, the system structure and operating characteristics of the distribution network will be greatly changed. The multigrounding of the micro-grid system was discussed from the provisions of the relevant electrical standards and the view of practical point. It is clear that PE wire is the repeated grounding instead of N repeated grounding in the TN system of micro-grid, and multigrounding problems that should be attention were described in TN-S and TT systems of micro-grid.

Abstract: After a large number of micro-grid power has been accessed to energy saving, the system would bring new challenges to the power distribution network in planning, design and construction. RCD directly related to the safety of persons and equipment. This article describes the commonly type of grounding protection, and analyze their respective advantages and disadvantages of the structure and characteristics of the micro-grid power supply system, the structure and characteristics of the ground type in the micro-grid power supply system were studied, the choice of RCD were focused on.

Abstract: The mathematical model of water consumption rate of LongTan Hydropower Station is established in this thesis. With the aim of reaching the minimum total water consumption of power generation, Equation Incremental Rate is used to solve this mathematical model with constant overall load of the hydropower station. Equation Incremental Rate is used in this thesis to solve some instances, prove the rationality of the mathematical model established and demonstrate that the unit load value calculated can direct the actual operation of the hydropower station better, thus the aim of energy saving and consumption reducing can be achieved.