套管管束式换热器的阻力特性和流量分配研究  

Study on drop pressure and flow distribution of double-tube heat exchanger

作　　者：刘俊强[1] 陈明辉[1] 扈玉民[1] 厉日竹[1] 孔德春[1] 张伟杰[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084

出　　处：《核科学与工程》2007年第4期339-343,共5页Nuclear Science and Engineering

摘　　要：对套管管束式换热器一次侧并联流道的阻力特性进行了研究。研究的目的是确定套管管束式换热器一次侧并联流道的阻力特性,找出流量分配的规律,通过对流量分配进行优化,解决套管管束式换热器的优化设计问题。研究方法是按照相似准则制造试验本体,建造试验台架并进行试验。试验验证了计算模型的正确性,得到了减小管间距可提高总传热系数的结果。The parallel connection channel pressure drop characters of the double-tube bundle heat exchange were experimentally investigated in this paper in order to find out how the flow of the heat exchanger is distributed and then to optimize the structure of heat exchanger according to the flow distribution. A double-tube bundle heat exchanger was built according to the similarity criteria. The experiment system was also built to test the optimization of the heat exchanger. The experiment results reveal that the calculating model is reliable and decreasing pipe space to optimize the heat exchanger is reasonable.

关 键 词：核供热堆 套管管束式换热器 并联流道 流量分配 阻力系数 

分 类 号：TL353[核科学技术—核技术及应用]