{"id":695662,"date":"2024-08-15T08:03:57","date_gmt":"2024-08-15T07:03:57","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=695662"},"modified":"2024-08-15T08:03:57","modified_gmt":"2024-08-15T07:03:57","slug":"ung-dung-nang-luong-cua-tu-thuy-dong-luc-hoc","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/ung-dung-nang-luong-cua-tu-thuy-dong-luc-hoc\/","title":{"rendered":"\u1ee8ng d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng c\u1ee7a t\u1eeb th\u1ee7y \u0111\u1ed9ng l\u1ef1c h\u1ecdc"},"content":{"rendered":"<p class=\"sidekick\">\u1ee8ng d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng c\u1ee7a t\u1eeb th\u1ee7y \u0111\u1ed9ng l\u1ef1c h\u1ecdc: c\u00e1ch khai th\u00e1c ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng t\u1eeb ch\u1ea5t l\u1ecfng d\u1eabn \u0111i\u1ec7n v\u00e0 t\u1eeb tr\u01b0\u1eddng \u0111\u1ec3 t\u1ea1o ra n\u0103ng l\u01b0\u1ee3ng b\u1ec1n v\u1eefng.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/ung_dung_nang_luong_cua_tu_thuy_dong_luc_hoc.png\" alt=\"\u1ee8ng d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng c\u1ee7a t\u1eeb th\u1ee7y \u0111\u1ed9ng l\u1ef1c h\u1ecdc\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u1ee8ng D\u1ee5ng N\u0103ng L\u01b0\u1ee3ng c\u1ee7a T\u1eeb Th\u1ee7y \u0110\u1ed9ng L\u1ef1c H\u1ecdc<\/h2>\n<p>T\u1eeb th\u1ee7y \u0111\u1ed9ng l\u1ef1c h\u1ecdc (MHD &#8211; Magnetohydrodynamics) l\u00e0 m\u1ed9t nh\u00e1nh trong ng\u00e0nh v\u1eadt l\u00fd v\u00e0 k\u1ef9 thu\u1eadt nghi\u00ean c\u1ee9u s\u1ef1 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a c\u00e1c ch\u1ea5t l\u1ecfng d\u1eabn \u0111i\u1ec7n trong t\u1eeb tr\u01b0\u1eddng. Nh\u1eefng ch\u1ea5t l\u1ecfng n\u00e0y c\u00f3 th\u1ec3 bao g\u1ed3m plasma, kim lo\u1ea1i n\u00f3ng ch\u1ea3y, ho\u1eb7c th\u1eadm ch\u00ed m\u1ed9t s\u1ed1 ch\u1ea5t l\u1ecfng ion h\u00f3a.<\/p>\n<h2>MHD l\u00e0 g\u00ec?<\/h2>\n<p>T\u1eeb th\u1ee7y \u0111\u1ed9ng l\u1ef1c h\u1ecdc k\u1ebft h\u1ee3p c\u1ea3 t\u1eeb h\u1ecdc v\u00e0 th\u1ee7y \u0111\u1ed9ng l\u1ef1c h\u1ecdc \u0111\u1ec3 nghi\u00ean c\u1ee9u s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa t\u1eeb tr\u01b0\u1eddng v\u00e0 ch\u1ea5t l\u1ecfng d\u1eabn \u0111i\u1ec7n. M\u1ed9t trong nh\u1eefng \u0111i\u1ec3m \u0111\u1eb7c bi\u1ec7t c\u1ee7a MHD l\u00e0 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t d\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t l\u1ecfng b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i t\u1eeb tr\u01b0\u1eddng.<\/p>\n<h2>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/h2>\n<p>Khi m\u1ed9t ch\u1ea5t l\u1ecfng d\u1eabn \u0111i\u1ec7n chuy\u1ec3n \u0111\u1ed9ng qua t\u1eeb tr\u01b0\u1eddng, m\u1ed9t l\u1ef1c Lorentz sinh ra. L\u1ef1c n\u00e0y l\u00e0m l\u1ec7ch h\u01b0\u1edbng chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a c\u00e1c \u0111i\u1ec7n t\u1eed v\u00e0 ion trong ch\u1ea5t l\u1ecfng. Bi\u1ec3u th\u1ee9c to\u00e1n h\u1ecdc cho l\u1ef1c Lorentz l\u00e0:<\/p>\n<p><em>F<\/em> = <em>q<\/em>(<em>E<\/em> + <em>v<\/em> \u00d7 <em>B<\/em>)<\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li><em>F<\/em> l\u00e0 l\u1ef1c Lorentz<\/li>\n<li><em>q<\/em> l\u00e0 \u0111i\u1ec7n t\u00edch<\/li>\n<li><em>E<\/em> l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 \u0111i\u1ec7n tr\u01b0\u1eddng<\/li>\n<li><em>v<\/em> l\u00e0 v\u1eadn t\u1ed1c c\u1ee7a h\u1ea1t \u0111i\u1ec7n t\u00edch<\/li>\n<li><em>B<\/em> l\u00e0 t\u1eeb tr\u01b0\u1eddng<\/li>\n<\/ul>\n<h2>\u1ee8ng d\u1ee5ng trong th\u1ef1c t\u1ebf<\/h2>\n<p>C\u00f4ng ngh\u1ec7 t\u1eeb th\u1ee7y \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng trong th\u1ef1c t\u1ebf, t\u1eeb s\u1ea3n xu\u1ea5t n\u0103ng l\u01b0\u1ee3ng cho \u0111\u1ebfn ng\u00e0nh c\u00f4ng nghi\u1ec7p.<\/p>\n<ul>\n<li><strong>M\u00e1y ph\u00e1t \u0111i\u1ec7n MHD:<\/strong> M\u00e1y ph\u00e1t \u0111i\u1ec7n MHD c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n m\u00e0 kh\u00f4ng c\u1ea7n c\u00e1c ph\u1ea7n c\u01a1 h\u1ecdc chuy\u1ec3n \u0111\u1ed9ng nh\u01b0 trong tua-bin. \u0110i\u1ec1u n\u00e0y l\u00e0m t\u0103ng hi\u1ec7u su\u1ea5t v\u00e0 gi\u1ea3m hao ph\u00ed c\u01a1 h\u1ecdc.<\/li>\n<li><strong>\u0110\u1ea9y t\u00e0u th\u1ee7y:<\/strong> H\u1ec7 th\u1ed1ng \u0111\u1ea9y t\u00e0u th\u1ee7y b\u1eb1ng MHD s\u1eed d\u1ee5ng t\u1eeb tr\u01b0\u1eddng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n d\u00f2ng ch\u1ea3y c\u1ee7a n\u01b0\u1edbc bi\u1ec3n d\u1eabn \u0111i\u1ec7n. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u0103ng hi\u1ec7u su\u1ea5t \u0111\u1ea9y v\u00e0 gi\u1ea3m ti\u1ebfng \u1ed3n so v\u1edbi h\u1ec7 th\u1ed1ng \u0111\u1ea9y truy\u1ec1n th\u1ed1ng.<\/li>\n<li><strong>X\u1eed l\u00fd kim lo\u1ea1i l\u1ecfng:<\/strong> Trong ng\u00e0nh c\u00f4ng nghi\u1ec7p luy\u1ec7n kim, MHD \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 tr\u1ed9n c\u00e1c kim lo\u1ea1i n\u00f3ng ch\u1ea3y m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, gi\u00fap c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng.<\/li>\n<\/ul>\n<h2>L\u1ee3i \u00edch v\u00e0 th\u00e1ch th\u1ee9c<\/h2>\n<p><strong>L\u1ee3i \u00edch:<\/strong><\/p>\n<ul>\n<li>Hi\u1ec7u su\u1ea5t cao do gi\u1ea3m b\u1edbt hao ph\u00ed c\u01a1 h\u1ecdc<\/li>\n<li>Kh\u00f4ng c\u1ea7n b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng<\/li>\n<li>\u1ee8ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c<\/li>\n<\/ul>\n<p><strong>Th\u00e1ch th\u1ee9c:<\/strong><\/p>\n<ul>\n<li>Chi ph\u00ed v\u1ec1 nguy\u00ean li\u1ec7u v\u00e0 c\u00f4ng ngh\u1ec7 ban \u0111\u1ea7u<\/li>\n<li>Y\u00eau c\u1ea7u ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c t\u1eeb tr\u01b0\u1eddng<\/li>\n<li>C\u1ea7n c\u00f3 m\u00f4i tr\u01b0\u1eddng ch\u1ea5t l\u1ecfng d\u1eabn \u0111i\u1ec7n<\/li>\n<\/ul>\n<p>T\u1ed5ng th\u1ec3, t\u1eeb th\u1ee7y \u0111\u1ed9ng l\u1ef1c h\u1ecdc m\u1edf ra nhi\u1ec1u c\u01a1 h\u1ed9i m\u1edbi cho vi\u1ec7c s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 s\u1ea1ch h\u01a1n. Tuy nhi\u00ean, \u0111\u1ec3 khai th\u00e1c h\u1ebft ti\u1ec1m n\u0103ng c\u1ee7a MHD, c\u1ea7n c\u00f3 th\u00eam nhi\u1ec1u nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n c\u00f4ng ngh\u1ec7.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u1ee8ng d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng c\u1ee7a t\u1eeb th\u1ee7y \u0111\u1ed9ng l\u1ef1c h\u1ecdc: c\u00e1ch khai th\u00e1c ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng t\u1eeb ch\u1ea5t l\u1ecfng d\u1eabn \u0111i\u1ec7n v\u00e0 t\u1eeb tr\u01b0\u1eddng \u0111\u1ec3 t\u1ea1o ra n\u0103ng l\u01b0\u1ee3ng b\u1ec1n v\u1eefng.<\/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>\u1ee8ng d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng c\u1ee7a t\u1eeb th\u1ee7y \u0111\u1ed9ng l\u1ef1c 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