农业机械学报2012，Vol.43Issue(12)：257-261,5.DOI:10.6041/j.issn.1000-1298.2012.12.046
微通道换热器内分流板流量分配特性
Flow Distribution Characteristics of Deflector in Micro Channel Heat Exchanger
摘要
Abstract
Four different test samples ( no deflector, deflector with one hole, deflector with five holes, and deflector with twelve holes in the manifold ) of micro-channel evaporator with parallel flow were processed. Flow distribution characteristics of deflectors were experimentally studied with water as the working fluid. The results showed that when the entrance Reynolds number was less than 3 000, the influence of which on the flow distribution characteristics of both the samples without deflector and with the deflector with one hole was apparent, and the flow distribution uniformity and stability of the two test samples were poor, but the sample without deflector was better than the deflector with one hole. After the entrance Reynolds number was more than 3 000, the uniformity and stability of the deflector with one hole was becoming better, but the uniformity of the sample without deflector was the worst in four of the test samples. The deflector with five holes had the good and stable flow distribution uniformity when the Reynolds number was less than 4 000. As the Reynolds number was more than 4 000, the flow distribution uniformity was worse. In comparison, the flow distribution uniformity and stability of the deflector with twelve holes were always the best in all the test samples, and as the entrance Reynolds number increased, the uniformity of flow distribution was improved slightly.关键词
微通道换热器/分流板/流量分配/试验Key words
Micro-channel heat exchanger/ Deflector/ Flow distribution/ Experiment分类
能源科技引用本文复制引用
刘巍,朱春玲..微通道换热器内分流板流量分配特性[J].农业机械学报,2012,43(12):257-261,5.基金项目
国家自然科学基金资助项目(10972106) （10972106）
