{"id":1055,"date":"2021-06-30T16:27:00","date_gmt":"2021-06-30T08:27:00","guid":{"rendered":"https:\/\/cryost.cn\/?p=1055"},"modified":"2021-08-31T16:29:30","modified_gmt":"2021-08-31T08:29:30","slug":"%e6%9d%8e%e8%b6%85%e9%be%99%e7%9a%84%e8%ae%ba%e6%96%87%e8%a2%abate%e6%8e%a5%e6%94%b6","status":"publish","type":"post","link":"https:\/\/cryost.cn\/?p=1055","title":{"rendered":"\u674e\u8d85\u9f99\u7684\u8bba\u6587\u88abATE\u63a5\u6536"},"content":{"rendered":"\n<p style=\"font-size:18px\"><strong>Applied Thermal Engineering<\/strong><br>2021<\/p>\n\n\n\n<p class=\"has-vivid-cyan-blue-color has-text-color\" style=\"font-size:18px\"><strong><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S1359431121007262?via%3Dihub\" data-type=\"URL\" data-id=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S1359431121007262?via%3Dihub\" target=\"_blank\" rel=\"noreferrer noopener\">Numerical investigation on fin configuration improvement of 2\u00a0K sub-atmospheric plate-fin heat exchangers for the superfluid helium cryogenic systems<\/a><\/strong><\/p>\n\n\n\n<p>Jian Wen<sup>ab<\/sup>, Chaolong Li<sup>ab<\/sup>, Hongwei Hao<sup>b<\/sup>, Xin Zhao<sup>b<\/sup>, Gang Lei<sup>a<\/sup>, Simin Wang<sup>c<\/sup>, Yanzhong Li<sup>ab<\/sup><br><sup>a<\/sup>State Key Laboratory of Space Cryogenic Propellant Technology, Beijing 100028, China<br><sup>b<\/sup>Department of Refrigeration and Cryogenics Engineering, School of Energy and Power Engineering, Xi\u2019an Jiaotong University, Xi\u2019an 710049, China<br><sup>c<\/sup>Department of Process Equipment and Control Engineering, School of Chemical Engineering and Technology, Xi\u2019an Jiaotong University, Xi\u2019an 710049, China<\/p>\n\n\n\n<h5 class=\"wp-block-heading\" style=\"font-size:18px\">\u6458\u8981\uff1a<\/h5>\n\n\n\n<p style=\"font-size:18px\">In order to improve the flow and heat transfer performance of 2\u00a0K sub-atmospheric pressure plate-fin heat exchanger, a new type of corrugated-serrated fin is proposed by combining corrugated and serrated fin. The\u00a0<em>Lw<\/em>\u00a0number is defined as a new structural parameter to describe the new type of fin. The numerical model of flow and heat transfer in the fin channels takes into account the influence of low temperature conditions with variable physical properties and has been fully verified by experimental data. Numerical investigation is performed to study the thermohydraulic characteristics of serrated fin, corrugated fin and corrugated-serrated fin. Meanwhile, three performance evaluation criteria\u00a0Colburn factor\u00a0<em>j<\/em>,\u00a0friction factor\u00a0<em>f<\/em>\u00a0and\u00a0<em>TE-factor<\/em>\u00a0are used to qualitative compare their flow, heat transfer and overall thermo-hydraulic performance. The results reveal that the heat transfer performance of new corrugated-serrated fins is the best. Colburn factor\u00a0<em>j<\/em>\u00a0of the new fins increases by 19.97%~38.22% compared with corrugated fin, and increases by 25.09%~33.83% compared with serrated fin. The flow performance of the corrugated-serrated fin is slightly worse, but the overall thermo-hydraulic performance is better, especially at\u00a0low Reynold number. Besides, the effects of various structural parameters on the thermohydraulic characteristics of the corrugated-serrated is obtained. The conclusions provide theoretical guidance on the design of 2\u00a0K sub-atmospheric plate-fin heat exchanger.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Numerical investigation on fin configuration improvement of 2 K sub-atmospheric plate-fin heat exchangers for the superfluid helium cryogenic systems<\/p>\n","protected":false},"author":1,"featured_media":607,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"_links":{"self":[{"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/posts\/1055"}],"collection":[{"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1055"}],"version-history":[{"count":0,"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/posts\/1055\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/media\/607"}],"wp:attachment":[{"href":"https:\/\/cryost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}