低大气压力下层状燃烧锅炉热力性能计算与分析  

Computation and analysis of the thermal properties of the layered burning boiler under low atmospheric pressure

作　　者：张东洋[1] 吴伟龙[1] 马柱[1] 姚思成[1] 葛坤[1] 

机构地区：[1]哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2009年第8期60-64,共5页Applied Science and Technology

摘　　要：研究了大气压力对锅炉炉内介质热力性质的影响规律;在研究影响对流传热放热系数因素的基础上,建立了对流放热系数计算公式;验证了标准方法中影响辐射传热的火焰(烟气)黑度计算关联式的适用性.将上述研究结果与现行标准方法的有关内容相结合,形成了低大气压力下的计算方法,并结合对实例的计算比较和分析,得出了低大气压力对锅炉辐射传热和对流传热的影响规律,并由此提出了对工程应用具有指导作用的建议.The authors researched the rule of the atmospheric pressure＇s influence on thermal properties of the media in the boiler furnace, established the calculation formulae of convective heat release coefficient on the basis of studying the factors influencing heat transfer and release by convection, and validated the adaptability of relevant flame （fume） density expressions that affect heat transfer by radiation in regular method. By combining the abovementioned result with existing method, the calculation at low atmospheric pressure was conducted. By comparing and analyzing the computation in practice, the rules of the atmospheric pressure＇s influence on heat transfers by radiation and convection were got respectively, and thereby constructive proposal was put forward for the application in practice.

关 键 词：低大气压力 层状燃烧锅炉 热力性能 计算与分析 

分 类 号：TM621.2[电气工程—电力系统及自动化]