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回顾了循环流化床锅炉在我国的发展历程,介绍了循环流化床锅炉国外发展情况。总结了发展超临界循环流化床锅炉的技术可行性,分析了发展超临界循环流化床锅炉应注意问题。 相似文献
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循环流化床锅炉炉内受热面的磨损问题已经成为一个新的研究焦点。作者通过长期的循环流化床锅炉技术管理,分析研究了国内外循环流化床锅炉运行情况,提出了循环流化床锅炉设计、制造和运行管理中炉内烟速的刚性约束和替代效应问题。 相似文献
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介绍了流化床锅炉在山西省的应用情况,总结了运行中存在的问题,根据流化床锅炉的运行经验,展望了流化床锅炉的发展前景。 相似文献
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十多年来,国内对循环流化床锅炉的研究取得了很大成绩,目前,循环流化床锅炉已为内的商业市场。但是,在已运行的循环流化床锅炉中暴露出了不少问题,直接影响了这一技术的进一步发展和在商业市场的竞争能力。本文总结了国内循环流化床锅炉运行中的问题,对产生这些问题的原因进行了探讨,并对循环流化床锅炉研制中的一些问题作了分析。 相似文献
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循环流化床锅炉作为一种新型的高效、低污染的燃煤锅炉,在国内热电行业中得到广泛使用,然而在实际应用中,其安装技术对锅炉的使用效能有着较大的影响。文章结合75 t/h循环流化床锅炉现场安装经验,讨论了影响流化床、旋风分离器等重要部位的安装要求,详细提出了循环流化床锅炉耐磨材料施工涉及的若干问题,以及该类型锅炉在安装和试运过程中需注意的问题。 相似文献
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循环流化床锅炉安装技术探讨 总被引:1,自引:0,他引:1
近年来, 循环流化床(CFB)锅炉在国内热电行业得到广泛推广和使用。在实际应用中, 其安装技术对锅炉的使用效能有着较大的影响。结合75 t/h 循环流化床锅炉现场安装经验, 讨论了影响流化床、旋风分离器等重要部位的安装要求, 较详细地提出了循环流化床锅炉耐磨材料施工涉及的若干问题, 对该类型锅炉在安装和试运过程中需注意的问题加以阐述, 为同类型锅炉的安装提供一定帮助。 相似文献
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对循环流化床锅炉的特点进行了较详细的阐述,对国内外循环流化床锅炉的发展和技术特点进行了介绍;对流化床锅炉的优、缺点以及在大型化方面所存在的问题进行了系统论述。 相似文献
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《电气》2011,(2):14-18
With the incessant development of power market reform,the existing cross-subsidy in electricity tariffs has become a critical problem in China’s power industry development.On the basis of the theories of cross-subsidy and electricity universal service,the authors take foreign countries’ experience as reference to design several solutions to cross-subsidies in electricity tariffs in different phases of China’s power industry development.Furthermore,the application and implementation of these solutions are analyzed in this paper. 相似文献
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The author suggests that the confidence which many biologists have in problem-solving methods is unwarranted and that there are very important limitations in almost all current methods for solving biological problems. The standard problem solving approach that computer scientists use is outlined. An example of an error in an evolutionary tree problem-the case of the African Eve-is discussed 相似文献
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Recent progress in inverse problems in electrocardiology 总被引:5,自引:0,他引:5
The considerable progress achieved in the inverse problem of electrocardiography over the last decade has provided grounds for optimism about the possibility of approaching significant clinically relevant applications in the next decade. However, there are a number of basic questions that still remain. In addressing these questions, the authors feel it is important to seek solutions that emphasize physiological rather than mathematical significance. This approach leads to twin requirements for useful inverse solutions: accuracy, defined in a physiologically meaningful (and not just averaged and mathematical) sense, and reliability, not only to measurement noise but also to geometric modeling errors and other uncertainties that are inescapable in practical application. Studies using analytically tractable models may still be relevant, but it seems more important to find solutions to practical inverse problems, which will move the field toward wider acceptance and credibility 相似文献
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无色透明材料形成的单层薄膜,其颜色由干涉色决定。以白光照射其表面,随薄膜厚度的增加,将出现一系列色彩,这是由薄膜干涉所致。我们可以根据薄膜颜色,估计薄膜厚度。显然,当厚度增大到后界面的影响可以忽略不计的程度(相当于只有一个界面的半无限大情形,本文简称“厚膜”),则“厚膜”颜色恢复为无色透明。半透明材料在基底上形成的薄膜系统,以白光照射所呈现的颜色,由于基底及吸收的影响,则不能简单地以薄膜干涉来分析。对于半透明薄膜系统,首先测量它的光强反射率谱和透射率谱,运用传递矩阵[1]方法计算出薄膜的介质光学常数,再以光学常数计算单层薄膜与“厚膜”的光强透射率谱与反射率谱及它们的色坐标。以菲涅耳公式计算出的反射率谱为半无限大介质反射率谱,这时的色坐标可视为“厚膜”的色坐标。 相似文献
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A survey is provided of Japanese research on ceramic materials for substrates, microwave dielectric ceramics, piezoelectric ceramics, semiconducting ceramics, and superconducting ceramics. Novel processing technologies are described, covering the use of amorphous materials, superfine powders, lamination, multilayer thin films, porous ceramics, and superlattices 相似文献
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