摘要
设计制造高效节能的加热气化设备是油气工业中迫切需要解决的问题。本文深入研究天然气加热炉传热机理,开创性地构建了大空间非稳态自然对流及介质参与性辐射耦合传热模型,求解水作为中间载热介质的天然气加热炉内非稳态耦合热流场,并通过天然气加热、传热流动试验平台,对边界条件进行试验校准并验证了数值分析模型的正确性。结果显示,加热炉内流场不均,整体循环不佳,加热炉的启动时间为2.5 h,加热效率仅为83.5%,介质参与性辐射占总传热量的24.5%。显然,传统加热炉结构有待优化,且介质参与性辐射影响不可忽略。
The design and manufacture of high efficiency and energy-saving heating and gasification equipment is an urgent problem to be solved in the oil and gas industry.In-depth research has been carried on the heat transfer mechanism inside the heaters.A combined natural convection and participating medium radiation heat transfer model in the large cylinder was built in a creative way,to solve the unsteady-state coupled heat flow field in the gas heater with water as the heat transfer medium,and the boundary conditions and numerical model were validated through the gas heating and heat transfer flow test platform.The results show that the flow field in the heater is uneven and the overall circulation is poor.The starting time of the heater is 2.5h,the heating efficiency is only 83.5%,and the medium participatory radiation accounts for 24.5%of the total heat transfer.Obviously,the structure of traditional heater needs to be optimized,and the influence of medium participatory radiation can not be ignored.
作者
郭韵
张栩宁
周仲伟
陈昊
樊俊杰
GUO Yun;ZHANG Xuning;ZHOU Zhongwei;CHEN Hao;FAN Junjie(School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620;Refining Department of Sinopec Shanghai Petrochemical Co.,Ltd.,Shanghai 200540;School of Environment and Architechture,University of Shanghai for Science and Technology,Shanghai 200093)
出处
《上海理工大学学报》
CAS
CSCD
北大核心
2021年第6期567-573,共7页
Journal of University of Shanghai For Science and Technology
基金
国家自然科学基金资助项目(51606116)
上海市科委科技创新行动计划(19195810800)。
关键词
加热气化
非稳态
耦合传热模型
加热效率
heating gasification
non-steady state
Coupled heat transfer model
heating efficiency
