螺旋板式换热器数值模拟计算的研究

为对螺旋板式换热器进行模拟计算,使用等角度间隔的方式将换热器中的流动通道及传热面分为多个流动单元和面单元,分析及建立了流动单元与传热面单元的对应关系,应用传热学原理建立了螺旋板式换热器的数学模型。应用Visual Bisic 6.0进行程序设计,自动生成方程组,并使用高斯消去法进行求解。模拟计算得到了换热器内的温度分布、总传热系数及总流动阻力。利用这一模型,本文对实际的螺旋板换热器进行了模拟计算,数学模型求解所得的结果与实验数据吻合较好。应用此数学模型还研究了圈数及板间距等对换热器参数的影响。

Numerical Simulation of Spiral Plate Heat Exchanger

In order to carry out simulative calculation for spiral heat exchanger,equal angle interval was used to divide exchanger flow channel and heat transfer surface into multiple flow units and heat transfer surface units.The relationship between flow units and surface units was established by analyzing the position of units,and numerical modal was established based on heat transfer theory.Visual Bisic 6.0 was used to compile the calculation program.The program can automatically generate equations,and the equati...