锅炉排烟热损失的精确计算方法研究
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摘要
锅炉排烟热损失是衡量锅炉热经济性的重要指标,其准确计算对锅炉的能效评价具有重要意义。对比了锅炉排烟热损失2种常用算法计算结果,发现计算结果最大相差达0.552 4个百分点,分析获得了计算结果存在差异的原因:2种计算方法的基准温度不同,并且与燃料低位发热量测试的基准温度不统一。为此,通过对燃料的低位发热量进行修正,提出了排烟热损失的精确计算方法。
The boiler exhaust heat loss is an important indicator to measure the boiler's thermal economy, therefore the accurate calculation of its value has important significance to the evaluation of the boiler energy efficiency. Two common calculation methods of boiler exhaust heat loss were compared in this paper. Results show that the maximum difference of boiler exhaust heat loss can be 0.552 4 percent. Reasons are: different reference temperatures are used in these two methods, and the reference temperature for the testing of lower heating value(LHV) is another value. Based on these, a modified method of boiler exhaust heat loss is proposed based on the correction of LHV.
The boiler exhaust heat loss is an important indicator to measure the boiler's thermal economy, therefore the accurate calculation of its value has important significance to the evaluation of the boiler energy efficiency. Two common calculation methods of boiler exhaust heat loss were compared in this paper. Results show that the maximum difference of boiler exhaust heat loss can be 0.552 4 percent. Reasons are: different reference temperatures are used in these two methods, and the reference temperature for the testing of lower heating value(LHV) is another value. Based on these, a modified method of boiler exhaust heat loss is proposed based on the correction of LHV.
引文
[1] 宋晓华.基于低碳经济的发电行业节能减排路径研究[D]. 保定:华北电力大学,2012.
[2] 杨勇平,杨志平,徐钢,等. 中国火力发电能耗状况及展望[J]. 中国电机工程学报,2013,33(23):1-11.
[3] 阎维平,米翠丽. 300MW富氧燃烧电站锅炉的经济性分析[J]. 动力工程学报,2010,30(3):184-190.
[4] 车得福,庄正宁,李军,等. 锅炉[M]. 西安: 西安交通大学出版社, 2008: 100-105.
[5] 杨开宇. 对锅炉排烟损失经济性的分析[J]. 黑龙江科技信息,2007(6):5.
[6] 杨昆民. 提高锅炉排烟损失q2的计算精度[J]. 云南电力技术,1990(4):41-43.
[7] 李海峰,王力光. 入炉煤低位发热量变化对机组经济性的影响[J]. 工业锅炉,2006(1):49-51.
[8] 周强泰. 锅炉原理[M]. 3版. 北京:中国电力出版社,2013:153-154.
[9] 张力. 锅炉原理[M]. 北京:机械工业出版社,2010:52-53.
[10] 工业锅炉设计计算标准方法编委会. 工业锅炉设计计划标准方法[M].北京:中国标准出版社,2003:45-47.
[11] 丁崇功. 工业锅炉设备[M]. 北京:机械工业出版社,2009:88-89.
[12] GB/T 213—2003,煤的发热量测定方法[S]. 北京:中国标准出版社社,2003.
[13] 美国机械工程师协会.Fired steam generators performance test code ASME l～TC4—1998[S].1999.
[2] 杨勇平,杨志平,徐钢,等. 中国火力发电能耗状况及展望[J]. 中国电机工程学报,2013,33(23):1-11.
[3] 阎维平,米翠丽. 300MW富氧燃烧电站锅炉的经济性分析[J]. 动力工程学报,2010,30(3):184-190.
[4] 车得福,庄正宁,李军,等. 锅炉[M]. 西安: 西安交通大学出版社, 2008: 100-105.
[5] 杨开宇. 对锅炉排烟损失经济性的分析[J]. 黑龙江科技信息,2007(6):5.
[6] 杨昆民. 提高锅炉排烟损失q2的计算精度[J]. 云南电力技术,1990(4):41-43.
[7] 李海峰,王力光. 入炉煤低位发热量变化对机组经济性的影响[J]. 工业锅炉,2006(1):49-51.
[8] 周强泰. 锅炉原理[M]. 3版. 北京:中国电力出版社,2013:153-154.
[9] 张力. 锅炉原理[M]. 北京:机械工业出版社,2010:52-53.
[10] 工业锅炉设计计算标准方法编委会. 工业锅炉设计计划标准方法[M].北京:中国标准出版社,2003:45-47.
[11] 丁崇功. 工业锅炉设备[M]. 北京:机械工业出版社,2009:88-89.
[12] GB/T 213—2003,煤的发热量测定方法[S]. 北京:中国标准出版社社,2003.
[13] 美国机械工程师协会.Fired steam generators performance test code ASME l～TC4—1998[S].1999.