{"id":1103,"date":"2021-11-10T22:20:00","date_gmt":"2021-11-10T14:20:00","guid":{"rendered":"https:\/\/cryost.cn\/?p=1103"},"modified":"2021-12-12T22:27:30","modified_gmt":"2021-12-12T14:27:30","slug":"%e5%be%90%e6%94%80%e7%9a%84%e8%ae%ba%e6%96%87%e8%a2%ab%e3%80%8a%e5%9b%bd%e9%99%85%e6%b0%a2%e8%83%bd%e3%80%8b%e6%8e%a5%e6%94%b6","status":"publish","type":"post","link":"https:\/\/cryost.cn\/?p=1103","title":{"rendered":"\u5f90\u6500\u7684\u8bba\u6587\u88ab\u300a\u56fd\u9645\u6c22\u80fd\u300b\u63a5\u6536"},"content":{"rendered":"\n<p style=\"font-size:18px\"><strong>International Journal of Hydrogen Energy<\/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\/S036031992104461X?via%3Dihub\" data-type=\"URL\" data-id=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S036031992104461X?via%3Dihub\" target=\"_blank\" rel=\"noreferrer noopener\">Study on continuous cooling process coupled with ortho-para hydrogen conversion in plate-fin heat exchanger filled with catalyst<\/a><\/strong><\/p>\n\n\n\n<p>PanXu<sup>a<\/sup>, GangLei<sup>b<\/sup>, YuanyuanXu<sup>b<\/sup>, JianWen<sup>a<\/sup>, SiminWang<sup>c<\/sup>, YanzhongLi<sup>a<\/sup><br><sup>a<\/sup>School of Energy and Power Engineering, Xi \u2018an Jiaotong University, Xi&#8217;an, 710049, Shaanxi, China<br><sup>b<\/sup>State Key Laboratory of Space Cryogenic Propellant Technology, Beijing 100028, China<sup>c<\/sup>School of Chemical Engineering and Technology, Xi \u2018an Jiaotong University, Xi&#8217;an, 710049, Shaanxi, 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\">A mathematical model of the plate-fin heat exchanger filled with catalyst (CFPFHX) is established to investigate the continuous cooling process coupled with ortho-para hydrogen conversion at 42\u201370 K. The flow and heat transfer performance and the efficiency of ortho-para hydrogen conversion in the CFPFHX are quantitatively evaluated, and the effects of the structural parameters on the flow and heat transfer coupled with ortho-para hydrogen conversion are analyzed. The results show that the Elovich model is the best existing kinetic models of ortho-para hydrogen conversion with an average relative deviation of 1.8%. The Colburn heat transfer factor (j factor) of the hot side of the CFPFHX is 4.3 times that of the plate-fin heat exchanger (PFHX), and the thermal enhancement factor (TEF) of the hot side is 37.7% of that of the PFHX. Meanwhile, for the CFPFHX, the j factor and the TEF of the hot side under different structural parameters are always about 8\u201310 times and 68%\u201393% of that of the cold side respectively. Therefore, the CFPFHX can ensure the flow and heat transfer performance and realize the ortho-para hydrogen continuous conversion. And a fin with the larger flow area (high fin height, wide fin spacing and small fin thickness) has a better flow and heat transfer performance and ortho-para hydrogen conversion. The outlet para-hydrogen ratio youtp-H2 and the mass space velocity vm in the CFPFHX have an approximate linear trend. When mass space velocity vm \u2264 0.6589 kg\/(m3\u00b7s), the outlet para-hydrogen ratio youtp-H2 can meet the requirement at 42\u201370 K. Above all, the mechanism of flow and heat transfer coupled with ortho-para hydrogen conversion is revealed for the first time in this study, which can provide a theoretical guidance for the application of the integrated technology in large scale hydrogen liquefaction process.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Study on continuous cooling process coupled with ortho-para hydrogen conversion in plate-fin heat exchanger filled with catalyst<\/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\/1103"}],"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=1103"}],"version-history":[{"count":0,"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/posts\/1103\/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=1103"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1103"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}