Applied Mechanics and Materials Vols. 178-181

Abstract: This paper analyzes the current energy structure and coal we use, based on clean coal technology in China, one of the current technology development status and prospects of coal were analyzed, and highlights China's Hunan province a coal for flue-cured tobacco production - biomass briquette mix, production test proved its superior performance, the desulfurization rate, burn rate of more than 90%, respectively, and 98%, suitable for promotion.

Abstract: A new evaluation method was proposed for hot -summer and cold -winter zone, which based on domestic and foreign energy-saving standard and evaluation technology as well as the current situation. The residential building energy-saving system evaluation model was established by referencing the AHP method model, its weight of each evaluation index came from the experts’ investigation method, and was modified by entropy technology to index. The results show that, this method can not only simplified the qualitative and quantitative evaluation index quantification process but also improve the whole evaluation system operability. At last, we made a empirical analysis and evaluation of comprehensive of a small unit residential in Lu'an, the result shows that although the residential building energy conservation in the basically meet the national building energy efficiency requirements,it still needs to be improved in some other aspects.

Abstract: The main energy-saving method of injection molding machine is that variable-frequency technology, variable pump system, servo control technology or energy accumulator is used to improve the hydraulic system and the efficiency of effective energy used on a hydraulic-driven system. At present, a larger development has been achieved in the injection molding machine energy-saving technology, but there are still some shortcomings, in order to better promote the research and development of energy-saving technology of injection molding machines, the characteristics of various energy-saving means of plastic injection molding machines is summarized and on this basis that the development direction of energy-saving technology of injection molding machines is put forward.

Abstract: Evaluating energy-saving effect plays an important role during the transformation on existing residential buildings for energy saving in cold area of north China. A relative index evaluation system of the energy efficiency in residential buildings is formed according to relevant energy-saving standards of the Ministry of Construction of China and the present situation in this area . Then a comprehensive evaluation model is built based on entropy and Unascertained Measure theory, and through an example to verify the applicability and feasibility of the model.

Abstract: The flow fields in different monsoon periods of Shanghai Mengqing Garden were analyzed by computational fluid dynamic (CFD) simulation method. At the same time, the wind energy value in the Shanghai Mengqing Garden was also evaluated by CFD method. And the suggested wind turbines arrangement was proposed based on the wind field results. Safety of the buildings around the garden was analyzed by comparing the change of the wind pressure coefficient. At last, the results show that the wind field in urban building environment is available for wind energy exploitation.

Abstract: The paper describes the status of the energy saving reconstruction of existing buildings external window at home and abroad. on the base of analyzing the heat transfer characteristics and the factors influencing on energy saving of building windows. Effective measures of energy saving reconstruction for existing building windows were established, and these measures include improvement of seal of window, change window sash, increase the window sash, posted on energy-saving membrane in the window, replaced by energy saving window. Energy saving effect of these measures were analyzed. It could be considered as the useful reference for renovation design of similar projects.

Abstract: The geothermal resource is a clean complex resource, which can be changed into sustainable energy guided by the science theories. Demonstrating the heating engineering of a immigration village in Tianjin, the intention of this paper is to survey the sustainable utilization of geothermal resource meeting basic heating load, containing: (1) the dynamic prediction technologies of the production–reinjection of geothermal wells; (2) the design of inclined geothermal well; (3) the technologies of cascaded utilization of geothermal resource; and (4) the project appraisal. The results show geothermal resource is sustainable, and yield good economic returns and social benefits.

Abstract: This paper briefly describes the sewage source heat pump, focuses primarily on water-source heat pump applications in practical project . Sewage source heat pump technology has matured and the rapid development of building energy saving in the promotion and application of energy efficient use of urban sewage system provides a reliable technology to ensure that, with the energy, economic and environmental advantages. Sewage source heat pump technology to urban wastewater recycling, turning waste into treasure,to achieve a sustainable energy development.

Abstract: The COP of compression-injection secondary refrigeration system is increased by 20%-50% than traditional compression-injection system. This paper analyzes the operation conditions on generation temperature, intermediate cooling temperature, condensation temperature and evaporation temperature in the compression-injection secondary refrigerating system powered by solar energy. Comprehensively considering technical and economic factors, the results show that generation temperature should be increased and condensation temperature should be decreased. In addition, the area of solar heat collector and the COP of the system should be considered when we chose the intermediate cooling temperature.

Abstract: With the rapid development of the intelligent building in China, Intelligent building energy consumption has become a social and economic development in a strategic issue that can not be ignored in our society. In this paper, we proposed the energy saving measures in central air conditioning and ventilation system and lighting system of large-scale intelligent building building automation (BA) system from four aspects.