Then, target for plate heat exchangers, a comparasion is carried out for the efficiency of heat transfer in the condition of pulsating flow and steady flow, which study the relationship among the pulsation amplitude, pulse frequency and the characteristics of heat transfer。 The results show that with the increasing of the Reynolds number, regardless of the steady flow or pulsating flow, the total heat transfer coefficient of plate heat exchanger has increased, the heat transfer efficiency has a gradually decreasing trend, which are almost coexistent with the rule in the experiment in heat sink chamber。 At the same time, under the condition of the Reynolds number, with the increase of pulse frequency, the heat exchange efficiency appeared first decreases and then increases, the lowest value appeared in the vicinity of the pulsation frequency f=0。66Hz, the maximum value of the thermal efficiency is 1。598, appear in the vicinity of the Reynolds number Re=3774, pulsation frequency f=0。55Hz。
KeyWords： pulsating flow; strengthening heat transfer; heat exchanger;
目录
第一章 绪论
1。1 课题选题背景及意义
1。2。1 脉动系统研究现状
1。2。2 脉动源研究进展概述
1。2。2。1 自激励脉动源
1。2。2。2 强制脉动源
1。3强化传热的途径
1。3。1增加传热面积A
1。3。2增大平均传热温差
1。3。3提高总传热系数K
1。4 流体脉动强化换热机理的认识
1。5 流体脉动强化换热特性影响参数
1。6 课题研究的主要内容
第二章 实验方案设计及设备选型
2。1 实验参数设定
2。2 双路开式实验装置
2。3设备选型
2。3。1 板式换热器
2。3。2 加热器
2。3。3 脉动源部件
2。3。4 测量部件
2。3。4。1 温度测量
2。3。4。2进出口压力测量
2。3。4。3流量测量
第三章 实验方法及误差分析
3。1 实验计算方法
3。2 实验步骤
第四章 实验结果分析
4。1 不同雷诺数下换热结果分析
4。2 不同脉动频率下换热结果分析
第五章 实验总结
全文总结与展望 脉动冷却系统的实验研究(2):http://www.youerw.com/jixie/lunwen_116216.html