{"id":1395,"date":"2024-05-10T01:27:04","date_gmt":"2024-05-10T01:27:04","guid":{"rendered":"https:\/\/demo9.thuythu.vn\/ecolighting\/?p=866"},"modified":"2024-06-12T02:19:54","modified_gmt":"2024-06-12T02:19:54","slug":"do-roi-la-gi-cong-thuc-tinh-do-roi-va-do-roi-tieu-chuan","status":"publish","type":"post","link":"https:\/\/demo9.thuythu.vn\/ecolighting\/en\/do-roi-la-gi-cong-thuc-tinh-do-roi-va-do-roi-tieu-chuan\/","title":{"rendered":"\u0110\u1ed9 r\u1ecdi l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c t\u00ednh \u0111\u1ed9 r\u1ecdi v\u00e0 \u0111\u1ed9 r\u1ecdi ti\u00eau chu\u1ea9n"},"content":{"rendered":"

B\u00e0i vi\u1ebft tr\u00ecnh b\u00e0y v\u1ec1 \u0110\u1ecbnh ngh\u0129a \u0111\u1ed9 r\u1ecdi, c\u00e1ch th\u1ee9c t\u00ednh \u0111\u1ed9 r\u1ecdi v\u00e0 \u0111\u1ed9 r\u1ecdi ti\u00eau chu\u1ea9n c\u1ee7a m\u1ed9t s\u1ed1 ph\u00f2ng trong gia \u0111\u00ecnh, qua \u0111\u00f3 c\u00f3 th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c s\u1ed1 l\u01b0\u1ee3ng b\u00f3ng c\u1ea7n l\u1eafp trong ph\u00f2ng, m\u1eddi c\u00e1c b\u1ea1n tham kh\u1ea3o.<\/p>\n

\u0110\u1ed9 r\u1ecdi l\u00e0 g\u00ec?<\/h2>\n

\u0110\u1ed9 r\u1ecdi<\/strong>\u00a0l\u00e0 quang th\u00f4ng tr\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch, c\u00f3 th\u1ec3 hi\u1ec3u n\u00f4m na, \u0111\u00f3 l\u00e0 \u0111\u01a1n v\u1ecb bi\u1ec3u th\u1ecb \u0111\u1ed9 s\u00e1ng t\u1ea1i m\u1ed9t \u0111i\u1ec3m. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 v\u00ed d\u1ee5 v\u1ec1 \u0111\u1ed9 r\u1ecdi tr\u00ean th\u1ef1c t\u1ebf.<\/p>\n

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\u0110\u1ed9 r\u1ecdi tr\u00ean m\u1eb7t b\u00e0n do c\u00e2y n\u1ebfn t\u1ea1o ra<\/figcaption><\/figure>\n

\"\"<\/p>\n

C\u00f4ng th\u1ee9c t\u00ednh \u0111\u1ed9 r\u1ecdi<\/strong><\/h2>\n

\"\"<\/p>\n

Ng\u01b0\u1eddi ta t\u00ednh \u0111\u1ed9 r\u1ecdi b\u1eb1ng c\u00f4ng th\u1ee9c:\u00a0E=\u03a6\/S<\/strong>, \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 r\u1ecdi l\u00e0 lux.<\/p>\n

Trong \u0111\u00f3:<\/p>\n

– \u03a6\u00a0<\/strong>l\u00e0 t\u1ed5ng quang th\u00f4ng: \u0111\u01a1n v\u1ecb (Lumens)<\/p>\n

– S\u00a0<\/strong>l\u00e0 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng: \u0111\u01a1n v\u1ecb (m2)<\/p>\n

Quan h\u1ec7 gi\u1eefa \u0111\u1ed9 r\u1ecdi v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng<\/strong><\/p>\n

X\u00e9t m\u1ed9t \u0111i\u1ec3m M n\u1eb1m tr\u00ean m\u1eb7t ph\u1eb3ng S c\u00e1ch ngu\u1ed3n s\u00e1ng O m\u1ed9t kho\u1ea3ng r, g\u00f3c gi\u1eefa OM v\u00e0 ph\u00e1p tuy\u1ebfn O \u0111\u1ebfn m\u1eb7t ph\u1eb3ng S l\u00e0 alpha.<\/p>\n

\u0110\u1ed9 r\u1ecdi ngang t\u1ea1i \u0111i\u1ec3m M \u0111\u01b0\u1ee3c t\u00ednh l\u00e0:\u00a0E= (I\u03b1<\/sub>\u00a0x cos \u03b1)\/r2<\/sup><\/strong><\/p>\n

Nh\u01b0 v\u1eady, c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng ch\u1ec9 ph\u1ee5 thu\u1ed9c ph\u01b0\u01a1ng, kh\u00f4ng ph\u1ee5 thu\u1ed9c kho\u1ea3ng c\u00e1ch. \u0110\u1ed9 r\u1ecdi ph\u1ee5 thu\u1ed9c ph\u01b0\u01a1ng v\u00e0 gi\u1ea3m theo b\u00ecnh ph\u01b0\u01a1ng kho\u1ea3ng c\u00e1ch.<\/p>\n

\u0110\u1ed9 r\u1ecdi ti\u00eau chu\u1ea9n trong nh\u00e0 \u1edf d\u00e2n d\u1ee5ng<\/h2>\n

D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 ch\u1ec9 s\u1ed1 v\u1ec1 \u0111\u1ed9 r\u1ecdi ti\u00eau chu\u1ea9n trong nh\u00e0 \u1edf d\u00e2n d\u1ee5ng.<\/p>\n\n\n\n\n\n\n\n\n
STT<\/strong><\/td>\nKHU V\u1ef0C<\/strong><\/td>\nLO\u1ea0I \u0110\u00c8N<\/strong><\/td>\nM\u00c0U S\u1eaeC AS<\/strong><\/td>\n\u0110\u1ed8 R\u1eccI (lumen\/m2)<\/strong><\/td>\n<\/tr>\n
1<\/td>\nPh\u00f2ng kh\u00e1ch\/ sinh ho\u1ea1t<\/td>\n\u00c2m tr\u1ea7n<\/td>\nV\u00e0ng\/trugn t\u00ednh<\/td>\n300-500<\/td>\n<\/tr>\n
2<\/td>\nPh\u00f2ng B\u1ebfp<\/td>\nTu\u00fdp\/bulb\/\u1ed1p tr\u1ea7n<\/td>\nTrung t\u00ednh<\/td>\n200 – 300<\/td>\n<\/tr>\n
3<\/td>\nPh\u00f2ng l\u00e0m vi\u1ec7c\/h\u1ecdc<\/td>\n\u00c2m tr\u1ea7n\/ Tu\u00fdp<\/td>\nTr\u1eafng<\/td>\n300-500<\/td>\n<\/tr>\n
4<\/td>\nPh\u00f2ng ng\u1ee7\/ t\u1eafm<\/td>\n\u00c2m Tr\u1ea7n<\/td>\nV\u00e0ng\/Trung T\u00ednh<\/td>\n150-200<\/td>\n<\/tr>\n
5<\/td>\nH\u00e0nh lang<\/td>\n\u1ed0p n\u1ed5i\/ Bulb<\/td>\nV\u00e0ng\/Trung T\u00ednh<\/td>\n100-150<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh l\u01b0\u1ee3ng \u0111\u00e8n c\u1ea7n chi\u1ebfu s\u00e1ng th\u00ec \u0111\u1ed9 r\u1ecdi ti\u00eau chu\u1ea9n v\u00e0 di\u1ec7n t\u00edch ph\u00f2ng l\u00e0 2 y\u1ebfu t\u1ed1 c\u01a1 b\u1ea3n v\u00e0 \u0111\u01b0\u1ee3c t\u00ednh theo c\u00f4ng th\u1ee9c.<\/p>\n

\"\"<\/p>\n

 <\/p>\n

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Tr\u00ean m\u1ed7i \u0111\u00e8n led \u0111\u1ec1u c\u00f3 th\u00f4ng s\u1ed1 \u0111\u1ed9 r\u1ecdi, b\u1ea1n ch\u1ec9 c\u1ea7n \u00e1p d\u1ee5ng \u0111\u00fang c\u00f4ng th\u1ee9c tr\u00ean t\u01b0\u01a1ng \u1ee9ng v\u1edbi di\u1ec7n t\u00edch v\u00e0 \u0111\u1ed9 r\u1ecdi ti\u00eau chu\u1ea9n c\u1ee7a ph\u00f2ng l\u00e0 s\u1ebd ra \u0111\u01b0\u1ee3c s\u1ed1 l\u01b0\u1ee3ng b\u00f3ng c\u1ea7n d\u00f9ng.<\/p>\n

Ch\u00fac c\u00e1c b\u1ea1n th\u00e0nh c\u00f4ng!<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

B\u00e0i vi\u1ebft tr\u00ecnh b\u00e0y v\u1ec1 \u0110\u1ecbnh ngh\u0129a \u0111\u1ed9 r\u1ecdi, c\u00e1ch th\u1ee9c t\u00ednh \u0111\u1ed9 r\u1ecdi v\u00e0 \u0111\u1ed9 r\u1ecdi ti\u00eau chu\u1ea9n c\u1ee7a m\u1ed9t s\u1ed1 ph\u00f2ng trong gia \u0111\u00ecnh, qua \u0111\u00f3 c\u00f3 th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c s\u1ed1 l\u01b0\u1ee3ng b\u00f3ng c\u1ea7n l\u1eafp trong ph\u00f2ng, m\u1eddi c\u00e1c b\u1ea1n tham kh\u1ea3o. \u0110\u1ed9 r\u1ecdi l\u00e0 g\u00ec? \u0110\u1ed9 r\u1ecdi\u00a0l\u00e0 quang th\u00f4ng tr\u00ean m\u1ed9t \u0111\u01a1n […]\n","protected":false},"author":1,"featured_media":970,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[128],"tags":[],"acf":[],"lang":"en","translations":{"en":1395,"vi":866},"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/demo9.thuythu.vn\/ecolighting\/wp-json\/wp\/v2\/posts\/1395"}],"collection":[{"href":"https:\/\/demo9.thuythu.vn\/ecolighting\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/demo9.thuythu.vn\/ecolighting\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/demo9.thuythu.vn\/ecolighting\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/demo9.thuythu.vn\/ecolighting\/wp-json\/wp\/v2\/comments?post=1395"}],"version-history":[{"count":1,"href":"https:\/\/demo9.thuythu.vn\/ecolighting\/wp-json\/wp\/v2\/posts\/1395\/revisions"}],"predecessor-version":[{"id":1401,"href":"https:\/\/demo9.thuythu.vn\/ecolighting\/wp-json\/wp\/v2\/posts\/1395\/revisions\/1401"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demo9.thuythu.vn\/ecolighting\/wp-json\/wp\/v2\/media\/970"}],"wp:attachment":[{"href":"https:\/\/demo9.thuythu.vn\/ecolighting\/wp-json\/wp\/v2\/media?parent=1395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/demo9.thuythu.vn\/ecolighting\/wp-json\/wp\/v2\/categories?post=1395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/demo9.thuythu.vn\/ecolighting\/wp-json\/wp\/v2\/tags?post=1395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}