热力发电厂热管空预器的热力计算.docxVIP

本科毕业论文（设计）论文（设计）题目：热力发电厂热管空气预热器的热力计算学 院： 电气工程学院专 业：热能与动力工程班 级：热能111学 号： 1108040257学生姓名： 谭乐指导教师：李环2015年 03月 30 日贵州大学本科毕业论文（设计）诚信责任书本人郑重声明：本人所呈交的毕业论文（设计），是在导师的指导下独立进行研究所完成。毕业论文（设计）中凡引用他人已经发表或未发表的成果、数据、观点等，均已明确注明出处。特此声明。论文（设计）作者签名：日期：目录热力发电厂热管空气预热器的热力计算摘要目前我国燃煤电站锅炉较常采用受热面回转式空气预热器，但是回转式空气预热器性能很容易受到漏风、腐蚀和堵灰的影响。为了保证回转空预器的性能就需要在设计、制造、安装和运行等多方面采取措施，增加了发电成本。热管空气预热器密封性不错、传热效率不低、制造和加工不麻烦，和我国的可持续发展政策符合。热管空预器的常规热力计算能更有效的说明热管空预器在电站锅炉或工业锅炉的美好发展前景。本文开始部分内容就热管的的发展进程，工作原理和特点进行了介绍，也收集了总结了热管在各方面研究应用的成果，为后文的热管空预器应用打下理论基础。第二部分就空预器分类做了图文介绍，分析了热管空预器在本电厂改造的理论可行性。重点采用常规热力计算的方法对热管空预器各项参数进行了计算，从数值上分析原来使用空预器的不同和改进后的节能效果的比较。关键词：空预器；热管空预器；发展前景；平均温差法；热力计算 Heat Pipe Air Preheater Thermodynamic Calculation of Thermal Power PlantsAbstractAt present，rotary air preheater are widely used in our country in coal-firedpower plant station. The performance ofrotary air preheater is susceptibleto leakage, corrosion and ash blocking. It need more cost when In order to guarantee the performance of Rotary air preheater which is needed in many aspects such as design, manufacture, installation and operation measures.Good sealing,high heat transfer efficiency and easy to manufacture and processingconsistent with sustainable development in our country .Conventional thermodynamic calculation of heat pipe air preheater provides a new evidence that it will have a good development prospect in power plant or industryboiler in the future.Here are many introductionssuch as development of Heat Pipe process, working principle and characteristics at the beginning.These results lay the foundation for the later application.The second part is about the classification and transformation theory analysis of Heat Pipe air in the power plant.Aticlefocus on the conventional thermodynamic calculation method,usingnumerical analysis on different use of the air preheater and comparingof energy - saving effect.Keywords: air preheater;heat-pipe air preheater;development prospect; mean temperature difference method;thermal