扰流孔强化波纹板蓄热元件传热性能的实验研究

发布时间：2017-12-31 19:39

本文关键词：扰流孔强化波纹板蓄热元件传热性能的实验研究　出处：《动力工程学报》2016年07期 　论文类型：期刊论文

【摘要】：采用瞬态实验方法研究了3种排列角度(15°、30°和45°)下的扰流孔波纹板蓄热元件的传热性能,并比较了等效泵功下的Nu/Nu_o*值.结果表明:与未添加扰流孔的波纹板蓄热元件相比,3种排列角度下的带扰流孔的波纹板蓄热元件的平均Nu分别提高了17.1%、24.8%和34.9%;3种情况下的平均阻力因数f分别提高了24.7%、33.1%和38.4%;与排列角度为30°和15°相比,45°时的Nu/Nu_o*分别提高了53.3%和67.8%,表明扰流孔排列角度为45°时,波纹板蓄热元件具有最佳性能.
[Abstract]:The heat transfer performance of the corrugated plate heat storage elements with spoiler holes at three different arrangement angles of 15 掳or 30 掳and 45 掳were studied by transient experiment. The results show that it is compared with the corrugated plate heat storage element without a spoiler hole under the equivalent pump power. The average Nu of the corrugated plate heat storage element with spoiler holes in three kinds of arrangement angles increased by 17.1U 24.8% and 34.9% respectively. The average resistance factor f increased by 24.733% and 38.4% respectively in three cases; Compared with the arrangement angles of 30 掳and 15 掳, Nu-P / Nuo * at 45 掳increased by 53.3% and 67.8, respectively, indicating that the permutation angle of the spoiler holes was 45 掳. Corrugated plate heat storage element has the best performance.
【作者单位】：浙江大学热工与动力系统研究所;
【基金】：金华市科学技术研究计划重点资助项目(20131031)
【分类号】：TK124
【正文快照】： 蓄热式换热器如空气预热器可以回收燃烧烟气中的低品位热能,提高燃料利用率[1].密集的波纹板蓄热元件作为蓄热式换热器的核心部件,其结构决定了蓄热式换热器的传热性能和流通阻力等,而传热性能直接关系到蓄热式换热器的工作效率[2].因此,加强波纹板蓄热元件的基础理论研究和产

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