发展了一种一维有限差分格式来分析同心换热器中的温度和压力分布。温度分布通过瞬态条件发展到稳态。使用了可变的流体和传输特性。包括壁内的轴向传导和跨界面的对流传递。该程序分析平行或逆流配置。确定热交换器内以及入口处的弯管和接头的入口区域效应。不可压缩液体和可压缩气体可用作热交换器流体。引文:密歇根州底特律ASHRAE交易，第85卷，第2部分

A one-dimensional, finite-difference scheme was developed to analyze temperature and pressure distribution in concentric heat exchangers. Temperature distributions are developed through transient conditions to steady state. Variable fluid and transport properties are used'. Axial conduction in the walls and convective transfer across interfaces are included. The program analyzes either parallel or counterflow configurations. Entry region effects are determined for bends and joints within the heat exchanger as well as at the entrance. Incompressible liquids and compressible gases can be used as the heat exchanger fluids.