{"id":698524,"date":"2024-09-07T11:48:11","date_gmt":"2024-09-07T10:48:11","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=698524"},"modified":"2024-09-07T11:48:11","modified_gmt":"2024-09-07T10:48:11","slug":"hieu-suat-nhiet-dong-hoc-cua-den-led","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/hieu-suat-nhiet-dong-hoc-cua-den-led\/","title":{"rendered":"Hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a \u0111\u00e8n LED"},"content":{"rendered":"<p class=\"sidekick\">Hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a \u0111\u00e8n LED: Ph\u00e2n t\u00edch c\u00e1ch \u0111\u00e8n LED bi\u1ebfn \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh \u00e1nh s\u00e1ng, ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m nhi\u1ec7t l\u01b0\u1ee3ng.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/hieu_suat_nhiet_dong_hoc_cua_den_led.png\" alt=\"Hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a \u0111\u00e8n LED\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Hi\u1ec7u Su\u1ea5t Nhi\u1ec7t \u0110\u1ed9ng H\u1ecdc C\u1ee7a \u0110\u00e8n LED<\/h2>\n<p>\u0110\u00e8n LED (Light Emitting Diode) l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng ngh\u1ec7 chi\u1ebfu s\u00e1ng hi\u1ec7u su\u1ea5t cao v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng nh\u1ea5t hi\u1ec7n nay. \u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a \u0111\u00e8n LED, ch\u00fang ta c\u1ea7n xem x\u00e9t m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 quan tr\u1ecdng.<\/p>\n<h2>C\u00e1ch \u0110\u00e8n LED Ho\u1ea1t \u0110\u1ed9ng<\/h2>\n<p>\u0110\u00e8n LED ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd b\u1ee9c x\u1ea1 \u00e1nh s\u00e1ng khi d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua m\u1ed9t ch\u1ea5t b\u00e1n d\u1eabn. Khi electron di chuy\u1ec3n qua ch\u1ea5t b\u00e1n d\u1eabn, ch\u00fang sinh ra c\u00e1c photon &#8211; c\u00e1c h\u1ea1t \u00e1nh s\u00e1ng, t\u1ea1o ra hi\u1ec7n t\u01b0\u1ee3ng ph\u00e1t quang.<\/p>\n<h2>Hi\u1ec7u Su\u1ea5t Nhi\u1ec7t C\u1ee7a \u0110\u00e8n LED<\/h2>\n<p>Hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a \u0111\u00e8n LED li\u00ean quan \u0111\u1ebfn kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh \u00e1nh s\u00e1ng. C\u00f4ng th\u1ee9c \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 t\u00ednh hi\u1ec7u su\u1ea5t nhi\u1ec7t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n nh\u01b0 sau:<\/p>\n<p>\\[<br \/>\n\\eta = \\frac{P_{ \u00e1nh s\u00e1ng}}{P_{\u0111i\u1ec7n}}<br \/>\n\\]\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li>\\(P_{\u00e1nh s\u00e1ng}\\) l\u00e0 c\u00f4ng su\u1ea5t \u00e1nh s\u00e1ng ph\u00e1t ra<\/li>\n<li>\\(P_{\u0111i\u1ec7n}\\) l\u00e0 c\u00f4ng su\u1ea5t \u0111i\u1ec7n ti\u00eau th\u1ee5<\/li>\n<\/ul>\n<p>\u0110\u00e8n LED th\u01b0\u1eddng c\u00f3 hi\u1ec7u su\u1ea5t cao, v\u1edbi nhi\u1ec1u lo\u1ea1i \u0111\u00e8n \u0111\u1ea1t hi\u1ec7u su\u1ea5t t\u1eeb 40% \u0111\u1ebfn 50% ho\u1eb7c cao h\u01a1n, t\u1ee9c l\u00e0 m\u1ed9t ph\u1ea7n l\u1edbn n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c chuy\u1ec3n h\u00f3a th\u00e0nh \u00e1nh s\u00e1ng thay v\u00ec nhi\u1ec7t.<\/p>\n<h2>Qu\u1ea3n L\u00fd Nhi\u1ec7t \u0110\u1ed9<\/h2>\n<p>M\u1eb7c d\u00f9 \u0111\u00e8n LED r\u1ea5t hi\u1ec7u qu\u1ea3, nh\u01b0ng m\u1ed9t ph\u1ea7n n\u0103ng l\u01b0\u1ee3ng v\u1eabn b\u1ecb chuy\u1ec3n th\u00e0nh nhi\u1ec7t. Vi\u1ec7c qu\u1ea3n l\u00fd nhi\u1ec7t \u0111\u1ed9 l\u00e0 c\u1ef1c k\u1ef3 quan tr\u1ecdng \u0111\u1ec3 duy tr\u00ec tu\u1ed5i th\u1ecd v\u00e0 hi\u1ec7u su\u1ea5t cao c\u1ee7a \u0111\u00e8n LED. C\u00f3 m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p qu\u1ea3n l\u00fd nhi\u1ec7t ph\u1ed5 bi\u1ebfn:<\/p>\n<ul>\n<li><strong>Thi\u1ebft k\u1ebf t\u1ea3n nhi\u1ec7t:<\/strong> C\u00e1c v\u1eadt li\u1ec7u t\u1ea3n nhi\u1ec7t nh\u01b0 nh\u00f4m gi\u00fap t\u1ea3n nhi\u1ec7t ra kh\u1ecfi \u0111\u00e8n LED.<\/li>\n<li><strong>Qu\u1ea1t gi\u00f3:<\/strong> M\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng qu\u1ea1t \u0111\u1ec3 l\u00e0m m\u00e1t.<\/li>\n<li><strong>V\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t t\u1ed1t:<\/strong> S\u1eed d\u1ee5ng ch\u1ea5t b\u00e1n d\u1eabn v\u00e0 v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t t\u1ed1t \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng tho\u00e1t nhi\u1ec7t.<\/li>\n<\/ul>\n<h2>L\u1ee3i \u00cdch C\u1ee7a \u0110\u00e8n LED So V\u1edbi \u0110\u00e8n Truy\u1ec1n Th\u1ed1ng<\/h2>\n<ul>\n<li>Hi\u1ec7u su\u1ea5t cao: \u0110\u00e8n LED chuy\u1ec3n \u0111\u1ed5i ph\u1ea7n l\u1edbn n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh \u00e1nh s\u00e1ng, gi\u00fap ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng.<\/li>\n<li>Tu\u1ed5i th\u1ecd d\u00e0i: \u0110\u00e8n LED c\u00f3 tu\u1ed5i th\u1ecd l\u00ean \u0111\u1ebfn 50,000 gi\u1edd ho\u1eb7c h\u01a1n.<\/li>\n<li>\u00cdt to\u1ea3 nhi\u1ec7t: \u0110\u00e8n LED \u00edt to\u1ea3 nhi\u1ec7t h\u01a1n nhi\u1ec1u so v\u1edbi \u0111\u00e8n s\u1ee3i \u0111\u1ed1t ho\u1eb7c \u0111\u00e8n hu\u1ef3nh quang.<\/li>\n<li>An to\u00e0n h\u01a1n: V\u1edbi t\u1ea3n nhi\u1ec7t t\u1ed1t v\u00e0 \u00edt ph\u00e1t ra nhi\u1ec7t l\u01b0\u1ee3ng, \u0111\u00e8n LED gi\u1ea3m nguy c\u01a1 ch\u00e1y n\u1ed5.<\/li>\n<\/ul>\n<h2>K\u1ebft Lu\u1eadn<\/h2>\n<p>Hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a \u0111\u00e8n LED l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng gi\u00fap c\u00f4ng ngh\u1ec7 n\u00e0y tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn v\u00e0 \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng. Vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t nhi\u1ec7t c\u0169ng nh\u01b0 qu\u1ea3n l\u00fd nhi\u1ec7t \u0111\u1ed9 t\u1ed1t s\u1ebd ti\u1ebfp t\u1ee5c l\u00e0m t\u0103ng tu\u1ed5i th\u1ecd v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u00e8n LED trong t\u01b0\u01a1ng lai.<\/p>\n<p>B\u1eb1ng vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c nguy\u00ean l\u00fd v\u00e0 \u01b0u \u0111i\u1ec3m c\u1ee7a \u0111\u00e8n LED, ch\u00fang ta c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng c\u00f4ng ngh\u1ec7 n\u00e0y v\u00e0o nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, t\u1eeb chi\u1ebfu s\u00e1ng d\u00e2n d\u1ee5ng \u0111\u1ebfn c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p v\u00e0 th\u01b0\u01a1ng m\u1ea1i.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a \u0111\u00e8n LED: Ph\u00e2n t\u00edch c\u00e1ch \u0111\u00e8n LED bi\u1ebfn \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh \u00e1nh s\u00e1ng, ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m nhi\u1ec7t l\u01b0\u1ee3ng.<\/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>Hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a \u0111\u00e8n LED<\/title>\n<meta name=\"description\" content=\"Hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a \u0111\u00e8n LED: Ph\u00e2n t\u00edch c\u00e1ch \u0111\u00e8n LED bi\u1ebfn \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh \u00e1nh s\u00e1ng, ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m nhi\u1ec7t l\u01b0\u1ee3ng.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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