小型燃油锅炉螺纹管传热计算方法的选用  

Selection of Heat Transfer Calculation Method for Spirally Corrugated Tubes of Small Oil-fired Boiler

作　　者：张洪云 张琪 ZHANG Hong-yun;ZHANG Qi(SAACKE Qingdao Energy Systems Co.Ltd.,Qingdao,266510,China)

机构地区：[1]扎克(青岛)能源设备有限公司,山东青岛266510

出　　处：《热能动力工程》2020年第6期129-135,共7页Journal of Engineering for Thermal Energy and Power

摘　　要：螺纹管的传热计算方法有多种,受螺纹管参数影响各种方法的计算结果差异较大。以小型燃油锅炉的螺纹管传热计算为例,选取"哈工大-之光所"、"工业锅炉设计计算标准方法"和日本吉富英明等人提出的公式三种传热计算方法,通过改变相对深度e/d和相对节距s/d进行传热计算,对比计算结果并分析讨论影响因素。结果表明:"工业锅炉设计计算标准方法"中螺纹管总传热系数误差大于10%,不建议选用;日本吉富英明等人的方法不适用e/d<0.0421且s/d>0.7367的螺纹管传热计算;"哈工大-之光所"方法最适合小型燃油锅炉的螺纹管传热计算。There are many methods for spirally corrugated tubes heat transfer calculation,and the results of various methods affected by parameters of spirally corrugated tubes are quite different.With the heat transfer calculation of small oil-fired boilers spirally corrugated tubes as an example,three heat transfer calculation methods are selected,‘Harbin Institute of Technology-ZhiGuang Institute’method,‘General Methods of Calculation and Design for Industrial Boiler’and formula proposed by Jeff Yingming et al.of Japan.By changing relative depth e/d and relative pitch s/d,the calculation results are compared and the influencing factors are analyzed and discussed.The results show that:The error of total heat transfer coefficient of spirally corrugated tubes obtained by‘General Methods of Calculation and Design for Industrial Boiler’is more than 10%,therefore it is not recommended.The method of Jeff Yingming and others in Japan is not suitable for the heat transfer calculation for spirally corrugated tubes with e/d<0.0421 and s/d>0.7367.‘Harbin Institute of Technology-ZhiGuang Institute’method is most suitable for spirally corrugated tubes heat transfer calculation of small oil-fired boilers.

关 键 词：计算方法 传热系数 优选 螺纹管 燃油锅炉 

分 类 号：TK222[动力工程及工程热物理—动力机械及工程] TK172.4