期刊
APPLIED THERMAL ENGINEERING
卷 81, 期 -, 页码 102-113出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2015.02.020
关键词
Spiral wound heat exchanger; Modeling; Mal-distribution; Simulation
For the purpose of designing LNG spiral wound heat exchanger, a distributed-parameter model is proposed in this paper. In the distributed-parameter model, the governing equations are established layer by layer instead of tube by tube to reduce the complexity of heat transfer calculation and improve the computation speed; a graph theory based method is proposed to describe the flexible flow circuits of different liquefaction processes, and an equivalent flow resistance is employed to replace the nonlinear equations to describe the mass flow rate distribution through flow circuits. An alternating iteration algorithm of heat transfer and pressure drop is proposed to quickly solve the equations of the distributed-parameter model. The presented model is validated by a practical application case and the results show that the predicted heat exchange capacity and outlet temperature of LNG agree well with the experimental data. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据