[1]吴尔夫,卓旭升*,陈节涛,等.正平衡法在电站锅炉空气预热器热效率计算中的应用[J].武汉工程大学学报,2018,40(05):580-584.[doi:10. 3969/j. issn. 1674-2869. 2018. 05. 020]
WU Erfu,ZHUO Xusheng*,CHEN Jietao,et al.Application of Direct Balance Method in Thermal Efficiency Calculation of Air Pre-heater of Boiler in Thermal Power Plant[J].Journal of Wuhan Institute of Technology,2018,40(05):580-584.[doi:10. 3969/j. issn. 1674-2869. 2018. 05. 020]
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正平衡法在电站锅炉空气预热器热效率计算中的应用(/HTML)
《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]
- 卷:
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40
- 期数:
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2018年05期
- 页码:
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580-584
- 栏目:
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机电与信息工程
- 出版日期:
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2018-12-27
文章信息/Info
- Title:
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Application of Direct Balance Method in Thermal Efficiency Calculation of Air Pre-heater of Boiler in Thermal Power Plant
- 文章编号:
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20180520
- 作者:
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吴尔夫1; 卓旭升*1; 陈节涛1; 2; 王 为1
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1. 武汉工程大学电气信息学院,湖北 武汉 430205;2. 国电汉川发电有限公司,湖北 汉川 431614
- Author(s):
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WU Erfu1; ZHUO Xusheng*1; CHEN Jietao1; 2; WANG Wei1
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1. School of Electrical and Information Engineering, Wuhan Institute of Technology, Wuhan 430205, China;2. GUO DIAN Hanchuan Power Plant Co. LTD, Hanchuan 431614, China
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- 关键词:
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空气预热器; 传热热效率; 烟气流量计算; 正平衡法
- Keywords:
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air pre-heater; heat transfer efficiency; flue-gas flow calculation; direct balance method
- 分类号:
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TK222
- DOI:
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10. 3969/j. issn. 1674-2869. 2018. 05. 020
- 文献标志码:
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A
- 摘要:
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根据正平衡法的原理,针对燃煤锅炉的空气预热器提出一种能够实时计算其热效率的简易方法,其算法原理是:利用空预器入口和出口处烟温的差值和烟气流量计算出烟气经过空预器释放的热量,以及利用空气经过空预器后的升温空气流量计算出其吸收的热量,从而得到空预器的热效率值。由于烟气的实际流量未知,本文利用燃烧反应式计算出燃料燃烧后生成的干烟气和水蒸气的流量,再加上过剩的空气量,最终得到了烟气的计算流量。将该算法用MATLAB语言实现编程后,可对空预器的热效率进行实时计算并绘出运行曲线,这将有助于机组运行人员监视空预器的运行状况。
- Abstract:
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According to the principle of direct balance method, this paper presents an algorithm for computing the thermal efficiency of air pre-heater of coal-fired boiler in real time operation. First, the released heat from flue-gas was calculated by using its temperature difference between the inlet and outlet of the pre-heater and its volume flow rate. Then, the absorpted heat was calculated by the volume flow rate of the air flowing through the pre-heater with temperature increment. Finally, the heat efficiency of the air pre-heater was obtained by the ratio of the above two heat flow rates. Because the real flue-gas’s volume flow rate was unknown, this paper solved this problem via calculating the volume flow rates of dry flue-gas and water vapor produced by chemical reaction of coal combustion, and adding the surplus air volume flow rate. After programmed with MATLAB language, this algorithm can calculate the real-time thermal efficiency of the air pre-heater and draw its curve, which is expected to help the technicians to monitor the operation of the air pre-heater.
参考文献/References:
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备注/Memo
- 备注/Memo:
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收稿日期:2018-06-30基金项目:湖北省教育厅科学技术研究项目(NO.B2015317)作者简介:吴尔夫,硕士研究生。E-mail: [email protected]*通讯作者:卓旭升,博士,副教授。E-mail: [email protected]引文格式:吴尔夫,卓旭升,陈节涛,等. 正平衡法在电站锅炉空气预热器热效率计算中的应用[J]. 武汉工程大学学报,2018,40(5):580-584.
更新日期/Last Update:
2018-10-23