{"id":1053,"date":"2021-04-30T16:24:00","date_gmt":"2021-04-30T08:24:00","guid":{"rendered":"https:\/\/cryost.cn\/?p=1053"},"modified":"2021-08-31T16:27:28","modified_gmt":"2021-08-31T08:27:28","slug":"%e5%88%98%e8%82%b2%e7%ad%96%e7%9a%84%e8%ae%ba%e6%96%87%e8%a2%abijr%e6%8e%a5%e6%94%b6","status":"publish","type":"post","link":"https:\/\/cryost.cn\/?p=1053","title":{"rendered":"\u5218\u80b2\u7b56\u7684\u8bba\u6587\u88abIJR\u63a5\u6536"},"content":{"rendered":"\n<p style=\"font-size:18px\"><strong>International Journal of Refrigeration<\/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\/S0140700721001420?via%3Dihub\" data-type=\"URL\" data-id=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0140700721001420?via%3Dihub\" target=\"_blank\" rel=\"noreferrer noopener\">Numerical investigation on the condensation of R134a, R1234ze(E) and R450A in mini-channels<\/a><\/strong><\/p>\n\n\n\n<p>Yuce Liu<sup>a<\/sup>, Jian Wen<sup>a<\/sup>, Pan Xu<sup>a<\/sup>, Misbah Khan<sup>a<\/sup>, Simin Wang<sup>b<\/sup>, Jiyuan Tu<sup>cd<\/sup><br><sup>a<\/sup>School of Energy and Power Engineering, Xi&#8217;an Jiaotong University, Xi&#8217;an, Shaanxi, China<br><sup>b<\/sup>School of Chemical Engineering and Technology, Xi&#8217;an Jiaotong University, Xi&#8217;an, Shaanxi, China<br><sup>c<\/sup>Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Tsinghua University, Beijing, China<br><sup>d<\/sup>School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, Melbourne, Australia<\/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\">R450A is one of R134a substitutions owing to its low\u00a0GWP\u00a0and similar refrigeration performance. The existing researches are mostly about its performance in\u00a0refrigeration systems. This paper focuses on its heat transfer characteristics in condensation. By combining the SST\u00a0<em>k-\u03c9<\/em>\u00a0model with the\u00a0VOF method, the condensation of R450A, and its two components, R134a and R1234ze(E), in mini-channels were explored. The mass flux ranges from 400 to 800 kg\u2022m<sup>\u22122<\/sup>\u2022s<sup>\u22121<\/sup>. The vapor quality is between 0.4 and 1. The\u00a0tube diameters\u00a0are 1mm and 2mm. The results show when the mass flux is 400, 600, and 800 kg\u2022m<sup>\u22122<\/sup>\u2022s<sup>\u22121<\/sup>,\u00a0HTC\u00a0of R134a is 11.3%-16.3%, 7.5%-15.3%, and 8.2%-14.7% higher than that of R450A, and HTC of R1234ze(E) is 5.2%-12.0%, 4.9%-12.5%, and 6.7%-14.1% higher than that of R450A. Moreover, their film thickness and\u00a0axial velocity\u00a0are also compared. When the vapor quality is 0.5, 0.7, and 0.9, compared with the average liquid film of R450A, that of R1234ze(E) is 1.2%, 8.8%, and 11.1% thinner and that of R134a is 4.4%, 3.6%, and 1.0% thicker, respectively. The effects of vapor quality, mass flux,\u00a0channel diameter, and fluid property on the condensation of R450A are also analyzed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Numerical investigation on the condensation of R134a, R1234ze(E) and R450A in mini-channels<\/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\/1053"}],"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=1053"}],"version-history":[{"count":0,"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/posts\/1053\/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=1053"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1053"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1053"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}