中国电机工程学报2011，Vol.31Issue(32)：76-81,6.
气化炉煤气冷却器对流换热特性的数值模拟
Numerical Studies of a Membrane Helical-coil Heat Exchanger in Integrated Coal Gasification Combined Cycle
赵振兴 1王祥雨 1常勇强 1曹子栋1
作者信息
- 1. 西安交通大学能源与动力工程学院,陕西省西安市710049
- 折叠
摘要
Abstract
Numerical investigations were conducted to understand the flow and heat transfer characteristics of synthesis gas（syngas） in membrane helical-coil heat exchanger.Simulations were performed for different axial pitch,radial pitch and inner helical coil diameter.The numerical results are in a good agreement with the experimental works on heat transfer in membrane helical-coil annular channels.The heat transfer coefficients of the membrane helical coil were found to be strongly associated with the radial pitch and axial pitch.The results show that the periodical variation of the axial velocity in the annular channel strengths the convection heat transfer;the heat transfer of the inner and outer tubes are irrelevant to coil curvature;membrane area percentage is important to the average heat transfer coefficient of membrane helical coil.In addition,the resistance characteristics of the heat exchanger are obtained.关键词
膜式螺旋管换热器/合成气/流动特性/换热特性/数值模拟/整体煤气化联合循环Key words
membrane helical-coil heat exchanger/syngas/flow characteristics/heat transfer/numerical simulation/integrated coal gasification combined cycle（IGCC）分类
能源科技引用本文复制引用
赵振兴,王祥雨,常勇强,曹子栋..气化炉煤气冷却器对流换热特性的数值模拟[J].中国电机工程学报,2011,31(32):76-81,6.
