一次表面回热器进气结构对物流分配性能的影响  

Study on the Inlet Structure Effects of Primary Surface Recuperators on Performance of Material Flow Distribution

作　　者：王巍[1] 聂三希[1] 

机构地区：[1]大连理工大学能源与动力学院,辽宁大连116023

出　　处：《燃气轮机技术》2011年第1期51-55,共5页Gas Turbine Technology

摘　　要：不合理的进气结构造成一次表面回热器(PSR)内部物流分配不均匀,影响回热器内部流体的流动和传热效果。本文提出了具有导流片的进气结构,并在尽可能地保证出口截面速度均匀分布的前提上,开展了不同进气结构对回热器芯体入口物流分配影响的研究。结果表明,在所研究的雷诺数范围内,改进后的进气结构中各通道出口截面速度的最大波动只有14%左右,物流分配已趋于均匀。为低雷诺数的物流分配研究提供了有效途径。The flowing and heat transfer in the primary surface recuperator（PSR） can be influenced by unreasonable inlet structure which results in uneven material flow distribution.Inlet structure with deflector plate is presented and the impacts of different inlet configuration on the material flow distribution is studied based on the uniform outlet velocities.The results show that outlet velocities fluctuation range are 14% to maximam for improved inlet construction in the range of the discussed Reynolds number,which reveals uniform material flow distribution.The effective way of material flow distribution at low Reynolds number is provided.

关 键 词：一次表面回热器 进气结构 物流分配 导流片 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]