间冷冰箱风道系统流量分配特性的模块化计算方法

本文提出了一种用于计算间冷冰箱风道系统流量分配特性的模块化计算方法。首先将整体风道根据风道串并联位置划分成若干个模块,单独得出每个模块的流量阻力特性公式,其次将各模块按照冰箱实际串并联关系连接成网络,根据网络图构建模块的流量阻力方程并联立求解,最终获得整个风道系统的流量分配特性。通过实验对模型进行了验证,结果表明应用模块化计算方法得出的系统风量值与实验测量值误差在5%以内。风道系统流量分配特性的模块化计算方法具有计算准确、方便建模与求解、通用性强等优点,可应用在间冷冰箱的实际设计中。

A Modular Computation Method for Flow Distribution Characteristics of Air in Duct System of Indirect Cooling Refrigerator

A modular computation method for predicting the flow distribution characteristics in duct system of indirect cooling refrigerator was presented. Firstly, the air duct is divided into several modules according to the position; secondly, the characteristics of air duct resistance and flow rate for each module is obtained; thirdly, the modules are connected into a network according to the actual series or parallel connections of air duct; finally, the flow distribution characteristics is obtained by solving the air duct resistance and flow rate equations. The model was experimentally verified, and the result shows that the deviation of the air flow rate between modular computation method and experiment is within 5%. The modular computation method has the advantages of high accuracy, convenience for modeling and solving, generalization. It is capable to be applied in indirect cooling refrigerator design.