基于Fluent的青海高原燃气锅炉燃烧特性数值研究  

Numerical study on combustion characteristics of gas-fired boilers in qinghai plateau based on fluent

作　　者：李晓红[1] 李通征 陶瑞鑫 LI Xiao-hong;LI Tong-zheng;TAO Rui-xin

机构地区：[1]青海大学化工学院

出　　处：《节能》2019年第10期65-69,共5页Energy Conservation

基　　金：青海省科技计划项目(项目编号：2017-GX-105)

摘　　要：青海地处高原,海拔高,氧气含量低,特殊的环境导致锅炉燃烧不充分且资源浪费。选取WNS7.0-1.0/95/70-QT燃气热水锅炉为研究对象,在实地采集数据的基础上,对其结构进行简化后绘出锅炉内胆的3D模型图并建立数学模型。通过改变锅炉燃气的进口速度、空气进口速度,氧气含量,模拟分析过量空气系数为1.0,1.1,1.2,1.3,1.4,1.5时的膛内温度场及二氧化碳的分布云图,得出青海高原地区比较适合的燃烧工况。理论分析的最佳燃烧条件在高原锅炉的生产设计以及实际运行过程中起到指导作用。Qinghai is located in the plateau with high altitude and low oxygen content. The special environment leads to insufficient combustion of boilers and waste of resources. The WNS7.0-1.0/95/70-QT gas-fired hot water boiler is selected as the research object. On the basis of field data collection,the structure of the boiler is simplified and the 3 D model diagram of the boiler inner container is drawn and the mathematical model is established. By changing the inlet speed of boiler gas,air inlet speed and oxygen content,the temperature field in the chamber and the distribution nephogram of carbon dioxide when the excess air coefficient is 1.0,1.1,1.2,1.3 and 1.4 are simulated and analyzed,and the more suitable combustion conditions in Qinghai plateau area are obtained. The optimal combustion conditions for theoretical analysis play a theoretical guiding role in the production design and actual operation of plateau boilers.

关 键 词：高原 燃气锅炉 燃烧特性 数值模拟 

分 类 号：TK01[动力工程及工程热物理]