不同填料对丝网回热器性能的影响  

Influence of Different Fillers on Heat Transfer Efficiency of Wire Mesh Regenerator

作　　者：伍堃[1] 吴锋[2] 王仕仙[1] 赵振华[1] 舒安庆[2] 

机构地区：[1]武汉工程大学邮电与信息工程学院,湖北武汉430074 [2]武汉工程大学理学院,湖北武汉430205

出　　处：《武汉工程大学学报》2017年第1期74-77,共4页Journal of Wuhan Institute of Technology

基　　金：国家自然科学基金项目(No.51176143)

摘　　要：用不同粒径的铜丝网和不锈钢丝网为填料,分别制作了6种不同的回热器(标号为R1-R6),通过实验对它们的性能进行了考察.研究结果表明:丝网的材料、粒径和组合方式不同,对回热器性能的影响不尽相同.通过比较不同回热器的回热损失及综合效率发现,单段式丝网回热器R1-R3的回热损失和综合效率各有优缺点,而采用适当组合后的多段式丝网回热器R6性能最优;当回热器热端选择粒径较小的丝网及在冷端采用导热率低的填料时,可大大提高回热器的换热效率.The six regenerators（Reference as R1 to R6）were respectively produced using copper or stainless steel mesh as the filler. Then the fluencies of different fillers on heat transfer efficiency of the regenerator were investigated. The results show that the materials,particle sizes and the combination of different wire mesh have different effects on the heat transfer efficiency of regenerator. It was found that the regenerators R1-R3 with single-stage wire mesh have advantages and disadvantages in heat loss and comprehensive efficiency,and the multi-stage wire mesh regenerator R6 has the best performance via a proper combination. The thermal efficiency of the regenerator is greatly improved when the regenerator adopts the wire mesh with smaller particle sizes at the hot end and the fillers with low thermal conductivity at the cold end.

关 键 词：热声发动机 热效率 填料 丝网回热器 

分 类 号：O302[理学—力学] TK11[动力工程及工程热物理—热能工程]