{"id":679853,"date":"2024-11-15T10:16:24","date_gmt":"2024-11-15T09:16:24","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=679853"},"modified":"2024-11-15T10:16:24","modified_gmt":"2024-11-15T09:16:24","slug":"thu-nghiem-chu-ky-nhiet-co-the-du-doan-hong-hoc-linh-kien-dien-tu-khong","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/thu-nghiem-chu-ky-nhiet-co-the-du-doan-hong-hoc-linh-kien-dien-tu-khong\/","title":{"rendered":"Th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n h\u1ecfng h\u00f3c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed kh\u00f4ng?"},"content":{"rendered":"<p class=\"sidekick\">Th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t: Ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch kh\u1ea3 n\u0103ng d\u1ef1 \u0111o\u00e1n h\u1ecfng h\u00f3c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed, gi\u00fap n\u00e2ng cao \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t thi\u1ebft b\u1ecb.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/thu_nghiem_chu_ky_nhiet_co_the_du_doan_hong_hoc_linh_kien_dien_tu_khong.png\" alt=\"Th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n h\u1ecfng h\u00f3c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed kh\u00f4ng?\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n h\u1ecfng h\u00f3c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed kh\u00f4ng?<\/h2>\n<p>Trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t, th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t l\u00e0 ph\u01b0\u01a1ng ph\u00e1p quan tr\u1ecdng gi\u00fap x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed. Nh\u01b0ng li\u1ec7u ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n h\u1ecfng h\u00f3c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed kh\u00f4ng? Ch\u00fang ta h\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u chi ti\u1ebft.<\/p>\n<h2>Th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t l\u00e0 g\u00ec?<\/h2>\n<p>Th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t li\u00ean quan \u0111\u1ebfn vi\u1ec7c \u0111\u1eb7t m\u1eabu th\u1eed qua c\u00e1c chu k\u1ef3 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9, chuy\u1ec3n t\u1eeb m\u1ed9t nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1ebfn m\u1ed9t nhi\u1ec7t \u0111\u1ed9 th\u1ea5p m\u1ed9t c\u00e1ch l\u1eb7p \u0111i l\u1eb7p l\u1ea1i. Qu\u00e1 tr\u00ecnh n\u00e0y m\u00f4 ph\u1ecfng c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t m\u00e0 linh ki\u1ec7n \u0111i\u1ec7n t\u1eed c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i trong th\u1ef1c t\u1ebf. M\u1ee5c ti\u00eau l\u00e0 ki\u1ec3m tra kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng c\u1ee7a linh ki\u1ec7n \u0111\u1ed1i v\u1edbi s\u1ef1 co gi\u00e3n nhi\u1ec7t, t\u1eeb \u0111\u00f3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a ch\u00fang.<\/p>\n<h2>C\u00e1c c\u01a1 ch\u1ebf h\u1ecfng h\u00f3c trong th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t<\/h2>\n<ul>\n<li><strong>K\u1ebft n\u1ed1i h\u00e0n:<\/strong> Nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i li\u00ean t\u1ee5c g\u00e2y ra s\u1ef1 gi\u00e3n n\u1edf v\u00e0 co l\u1ea1i c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u, d\u1eabn \u0111\u1ebfn h\u1ecfng h\u00f3c c\u00e1c m\u1ed1i h\u00e0n.<\/li>\n<li><strong>V\u1eadt li\u1ec7u \u0111i\u1ec7n m\u00f4i:<\/strong> C\u00e1c v\u00f2ng xo\u1eafn l\u1eb7p \u0111i l\u1eb7p l\u1ea1i c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m t\u00ednh ch\u1ea5t c\u00e1ch \u0111i\u1ec7n c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n.<\/li>\n<li><strong>C\u00e1c th\u00e0nh ph\u1ea7n b\u00e1n d\u1eabn:<\/strong> S\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n c\u1ee7a c\u00e1c linh ki\u1ec7n b\u00e1n d\u1eabn, d\u1eabn \u0111\u1ebfn hi\u1ec7u su\u1ea5t gi\u1ea3m s\u00fat ho\u1eb7c h\u1ecfng ho\u00e0n to\u00e0n.<\/li>\n<\/ul>\n<h2>Ph\u01b0\u01a1ng ph\u00e1p v\u00e0 quy tr\u00ecnh th\u1eed nghi\u1ec7m<\/h2>\n<p>Qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t th\u01b0\u1eddng tu\u00e2n theo c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ol>\n<li>Ch\u1ecdn nhi\u1ec7t \u0111\u1ed9 c\u1ef1c tr\u1ecb: X\u00e1c \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9 cao nh\u1ea5t v\u00e0 th\u1ea5p nh\u1ea5t linh ki\u1ec7n s\u1ebd \u0111\u1ed1i m\u1eb7t.<\/li>\n<li>Chu k\u1ef3 nhi\u1ec7t: \u0110\u1eb7t m\u1eabu th\u1eed qua c\u00e1c chu k\u1ef3 n\u00f3ng-l\u1ea1nh l\u1eb7p \u0111i l\u1eb7p l\u1ea1i, v\u00ed d\u1ee5 t\u1eeb -40\u00b0C \u0111\u1ebfn 125\u00b0C.<\/li>\n<li>\u0110o l\u01b0\u1eddng v\u00e0 ghi l\u1ea1i: Ghi l\u1ea1i thay \u0111\u1ed5i v\u1ec1 h\u00ecnh d\u00e1ng, c\u1ea5u tr\u00fac v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a linh ki\u1ec7n sau m\u1ed7i chu k\u1ef3.<\/li>\n<li>Ph\u00e2n t\u00edch: S\u1eed d\u1ee5ng c\u00e1c ph\u00e9p \u0111o \u0111\u1ec3 ph\u00e2n t\u00edch v\u00e0 d\u1ef1 \u0111o\u00e1n \u0111\u1ed9 b\u1ec1n v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a linh ki\u1ec7n.<\/li>\n<\/ol>\n<h2>Kh\u1ea3 n\u0103ng d\u1ef1 \u0111o\u00e1n h\u1ecfng h\u00f3c<\/h2>\n<p>Th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t c\u00f3 kh\u1ea3 n\u0103ng d\u1ef1 \u0111o\u00e1n h\u1ecfng h\u00f3c linh ki\u1ec7n th\u00f4ng qua vi\u1ec7c quan s\u00e1t c\u00e1c d\u1ea5u hi\u1ec7u tr\u1ee5c tr\u1eb7c xu\u1ea5t hi\u1ec7n s\u1edbm. B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng c\u00e1c chu k\u1ef3 nhi\u1ec7t nh\u1ea5t \u0111\u1ecbnh, k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m y\u1ebfu trong thi\u1ebft k\u1ebf ho\u1eb7c v\u1eadt li\u1ec7u v\u00e0 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu c\u1ee7a linh ki\u1ec7n. M\u1ed9t s\u1ed1 ph\u01b0\u01a1ng tr\u00ecnh ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n tu\u1ed5i th\u1ecd c\u1ee7a linh ki\u1ec7n bao g\u1ed3m:<\/p>\n<p>\\( N_f = K \\cdot (\\Delta T)^{-m} \\)<\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li>N<sub>f<\/sub>: S\u1ed1 chu k\u1ef3 nhi\u1ec7t tr\u01b0\u1edbc khi h\u1ecfng.<\/li>\n<li>K, m: C\u00e1c h\u1eb1ng s\u1ed1 ph\u1ee5 thu\u1ed9c v\u00e0o v\u1eadt li\u1ec7u v\u00e0 lo\u1ea1i linh ki\u1ec7n.<\/li>\n<li>\\(\\Delta T\\): Bi\u00ean \u0111\u1ed9 nhi\u1ec7t \u0111\u1ed9 (T<sub>max<\/sub> &#8211; T<sub>min<\/sub>).<\/li>\n<\/ul>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>Th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1eefu \u00edch trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t, gi\u00fap d\u1ef1 \u0111o\u00e1n v\u00e0 gi\u1ea3m thi\u1ec3u nguy c\u01a1 h\u1ecfng h\u00f3c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed. M\u1eb7c d\u00f9 kh\u00f4ng th\u1ec3 d\u1ef1 \u0111o\u00e1n ch\u00ednh x\u00e1c 100% m\u1ecdi h\u1ecfng h\u00f3c, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cung c\u1ea5p th\u00f4ng tin quan tr\u1ecdng gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 tin c\u1eady v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a c\u00e1c linh ki\u1ec7n. Vi\u1ec7c \u00e1p d\u1ee5ng quy tr\u00ecnh th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t \u0111\u00fang c\u00e1ch s\u1ebd g\u00f3p ph\u1ea7n n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed trong th\u1ef1c t\u1ebf.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t: Ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch kh\u1ea3 n\u0103ng d\u1ef1 \u0111o\u00e1n h\u1ecfng h\u00f3c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed, gi\u00fap n\u00e2ng cao \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t thi\u1ebft b\u1ecb.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Th\u1eed nghi\u1ec7m chu k\u1ef3 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