共查询到20条相似文献,搜索用时 109 毫秒
1.
从节约和环保角度剖析钢结构在火力发电厂应用中的优越性和时效性,对比钢筋混凝土结构和砖混结构在火力发电厂中的缺陷性,展望火力发电厂中钢结构发展的广阔前景。建议大量发展钢结构在火力发电厂中的应用,逐步压缩钢筋混凝土结构和砖混结构在火力发电厂中的应用。 相似文献
2.
叙述了小波理论在电力系统微机保护中的应用研究的目的和意义,概述了小波理论在电力系统微机保护中的应用研究现状,指出了小波理论在微机保护应用中的一些算法及其存在的问题,展望了小波理论在电力系统微机保护中的应用前景,提出了小波理论在电力系统应用研究中的一些新思路和应用领域。 相似文献
3.
叙述了小波理论在电力系统微机保护中的应用研究的目的和意义 ,概述了小波理论在电力系统微机保护中的应用研究现状 ,指出了小波理论在微机保护应用中的一些算法及其存在的问题 ,展望了小波理论在电力系统微机保护中的应用前景 ,提出了小波理论在电力系统应用研究中的一些新思路和应用领域 相似文献
4.
5.
主要阐述内部审计在惩治和预防腐败体系工作中的独特性和重要和作用以及如何发挥内部审计在惩治和预防腐败体系工作中的作用三方面进行阐述,说明强化内部审计监督在惩治和预防腐败体系中的地位和作用对完善反腐倡廉体系建设意义重大。 相似文献
6.
分析民营企业的产生、发展和它在我国经济发展中的地位和重要作用,阐述民营经济在我国国民经济中的发展趋势。 相似文献
7.
在简单介绍了TOPC的发展过程以及其在工业控制中的作用的基础上,重点叙述了OPC的技术原理、特点和体系结构。最后举例OPC技术在垃圾焚烧监控系统中的应用和实现。通过其实际应用证明了OPC在工业过程控制中的可行性。 相似文献
8.
9.
10.
11.
分析了火电厂锅炉连续排污的废水热能浪费及其利用价值,介绍了末阳火电厂利用排污水余热取暖的设计和使用效果。说明在火电厂利用废水余热节能有着得天独厚的条件,大有潜力可挖。 相似文献
12.
S. M. Vlasov N. D. Chichirova A. A. Chichirov A. Yu. Vlasova A. A. Filimonova D. V. Prosvirnina 《Thermal Engineering》2018,65(2):115-119
A turbine-condensate cooling system is one of the less stable and most hard-to-control systems of maintaining optimal water chemistry. A laboratory recycling cooling water test facility, UVO-0.3, was developed for physical simulation of innovative zero-discharge water chemistry conditions and improvement of technological flowcharts of stabilization treatment of the initial and circulating water of the recycling cooling systems at thermal power plants. Experiments were conducted in the UVO-0.3 facility to investigate the processes that occur in the recycling water supply system and master new technologies of stabilization of the initial and circulating water. It is shown that, when using untreated initial water, scaling cannot be prevented even under low concentration levels. The main reason for the activation of scale depositing is the desorption of carbon dioxide that results in alkalization of the circulating water and, as a consequence, a displacement of the chemical reaction equilibrium towards the formation of slightly soluble hardness ions. Some techniques, viz., liming and alkalization of the initial water and the by-pass treatment of the circulating water, are considered. New engineering solutions have been developed for reducing the amount of scale-forming substances in the initial and circulating water. The best results were obtained by pretreating the initial water with alkalizing agents and simultaneously bypassing and treating part of the circulating water. The obtained experimental data underlie the process flowcharts of stabilization treatment of the initial and circulating TPP water that ensure scale-free and noncorrosive operation and meet the corresponding environmental requirements. Under the bypassing, the specific rates of the agents and the residual hardness are reduced compared with the conventional pretreatment. 相似文献
13.
14.
15.
为解决高压加热器的水位失控造成加热器满水或无水位运行及加热器水位波动大等问题,应用汽液两相流自调节水位控制器控制高压加热器水位,效果明显,经济性较好 相似文献
16.
水电开发对天然河流的水文情势、水环境等势必会产生一定影响,尤其对于开发影响区内存在饮用水水源地此类敏感环境保护目标的情况,影响更是不容忽视.本文以汉江上游拟建旬阳水电站对其库区内安康马坡岭、许家台饮用水水源地水质的影响为研究实例,采用三维水动力学水质数学模型为研究手段,对电站水库兴建前后上述两水源地的COD、NH_3-N污染物浓度分布状况进行了计算,并对比分析了建库前后水源地水质的变化趋势,得出了电站开发对其影响区内饮用水水源地水质的影响结论,为水电开发影响区内饮用水水源地保护措施的提出提供了理论依据. 相似文献
17.
18.
在实测水文资料的基础上,分析了陕西省泾河流域降水资源量、地表水资源量、地下水资源量、水资源总量、水资源可利用总量、水资源质量评价及水资源量趋势等,结果表明:陕西省泾河流域水资源总量6.32亿m3;泾河流域入境水量为14.01亿m3;陕西省泾河流域水利用总量为7.68亿m3。为陕西省泾河流域水资源管理及优化配置提供了参考。 相似文献
19.
20.
A. B. Alkhasov 《Thermal Engineering》2018,65(3):151-154
Technology for the integrated development of low-temperature geothermal resources using the thermal and water potentials for various purposes is proposed. The heat of the thermal waters is utilized in a low-temperature district heating system and for heating the water in a hot water supply system. The water cooled in heat exchangers enters a chemical treatment system where it is conditioned into potable water quality and then forwarded to the household and potable water supply system. Efficient technologies for removal of arsenic and organic contaminants from the water have been developed. For the uninterrupted supply of the consumers with power, the technologies that use two and more types of renewable energy sources (RESs) have the best prospects. Technology for processing organic waste using the geothermal energy has been proposed. According to this technology, the geothermal water is divided into two flows, one of which is delivered to a biomass conversion system and the other is directed to a geothermal steam-gas power plant (GSGP). The wastewater arrives at the pump station from which it is pumped back into the bed. Upon drying, the biogas from the conversion system is delivered into the combustion chamber of a gas-turbine plant (GTP). The heat of the turbine exhaust gases is used in the GSGP to evaporate and reheat the low-boiling working medium. The working medium is heated in the GSGP to the evaporation temperature using the heat of the thermal water. High-temperature geothermal brines are the most promising for the comprehensive processing. According to the proposed technology, the heat energy of the brines is utilized to generate the electric power at a binary geothermal power station; the electric power is then used to extract the dissolved chemical components from the rest of the brine. The comprehensive utilization of high-temperature brines of the East-Precaucasian Artesian Basin will allow to completely satisfy the demand of Russia for lithium carbonate and sodium chloride. 相似文献