The effects of the contents for fly ash,the surface modifiers for fly ash on the mechanical,flow performances and the heat-durability of the fly ash/polyethylene were investigated.The results showed that the impact strength,tensile strength,elongation at break and MFR of the composites decreased while flexural strength and hardness(shore D) increased with increasing the fly ash content;the surface modifiers for fly ash improved the mechanical,flow performances and heat-durability of the composites.
In order to study the advantages of saving energy and reducing cost in operation of river water source heat pump air conditioning system + water storage air conditioning system,taking an energy supply project in wuhan as the research object,the energy consumption of river water source heat pump air conditioning system + water storage air conditioning system and Jiang WSHP air conditioning system were analyzed and compared. Firstly,e QUEST building energy consumption simulation software was used to simulate and calculate the annual cooling and heating load of the project,and the load variation rule was obtained. Then,TRNSYS operating energy consumption simulation software was used to model and calculate the two air conditioning systems. Through the analysis of the annual operating power consumption of the two air conditioning systems,it was found that,compared with the water source heat pump air conditioning system,the annual operating power consumption of the river water source heat pump + water storage air conditioning system is reduced by 10.81%,the operating electricity cost is reduced by 3,026,000 yuan,and the CO 2 emission is reduced by 410,000 tons.
石油天然气是主要能源之一，对经济和生活的发展起着非常重要的推动作用。目前，随着我国能源需求的不断加大，也进一步带动了石油机械的快速发展，同时开发的效率与难度都在提高，液压设备以及液压元件广泛的在石油机械中应用。液压设备其中一个较重要的问题就是液压密封，为此要加强对石油液压及密封技术的重视程度，投入一定的人力、物力和财力来对传统技术进行改进和创新，推动我国石油工业的良好发展。本文从石油机械中液压及密封技术的重要性入手，就液压及密封技术在石油机械中的应用进行了分析。
The current status of study,mechanisms,varieties,application scopes and shortages of thermodynamical inhibitors,kinetic inhibitors and anti-agglomerants are presented respectively.In view of the shortages of the existing inhibitors,the development trend of the research is proposed.
为了改善养殖场沼气工程运转现状，本文对工程经济效益展开深入分析。通过分析沼气工程运行特点和变量，构建工程经济效益模型。该模型以工程经济效益影响因素为基础，根据因素之间的关联关系，引入定性分析法，完成工程经济效益模型的构建。该模型的应用结果显示，工程经济效益的改善，需要对政府补贴、发电入网单价增长参数进行调整，该结论可以作为工程经济效益改善策略研究参考依据。
