{"id":708819,"date":"2024-08-17T04:29:19","date_gmt":"2024-08-17T03:29:19","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=708819"},"modified":"2024-08-17T04:29:19","modified_gmt":"2024-08-17T03:29:19","slug":"nhiet-dung-rieng-la-gi","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/nhiet-dung-rieng-la-gi\/","title":{"rendered":"Nhi\u1ec7t dung ri\u00eang l\u00e0 g\u00ec?"},"content":{"rendered":"

Nhi\u1ec7t dung ri\u00eang l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u kh\u00e1i ni\u1ec7m, c\u00f4ng th\u1ee9c v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a nhi\u1ec7t dung ri\u00eang trong \u0111\u1eddi s\u1ed1ng v\u00e0 ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/p>\n

\"Nhi\u1ec7t<\/p>\n

Nhi\u1ec7t dung ri\u00eang l\u00e0 g\u00ec?<\/h2>\n

Nhi\u1ec7t dung ri\u00eang l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m quan tr\u1ecdng trong ng\u00e0nh nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc v\u00e0 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t. Ch\u00fang ta c\u00f9ng t\u00ecm hi\u1ec3u v\u1ec1 kh\u00e1i ni\u1ec7m n\u00e0y v\u00e0 t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3.<\/p>\n

Nhi\u1ec7t dung ri\u00eang \u0111\u1ecbnh ngh\u0129a<\/h2>\n

Nhi\u1ec7t dung ri\u00eang (c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 nhi\u1ec7t dung ri\u00eang c\u1ee7a ch\u1ea5t) l\u00e0 l\u01b0\u1ee3ng nhi\u1ec7t c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a m\u1ed9t \u0111\u01a1n v\u1ecb kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a ch\u1ea5t \u0111\u00f3 l\u00ean 1 \u0111\u1ed9 C (ho\u1eb7c 1 \u0111\u1ed9 K). Nhi\u1ec7t dung ri\u00eang th\u01b0\u1eddng \u0111\u01b0\u1ee3c k\u00fd hi\u1ec7u b\u1eb1ng ch\u1eef c<\/em> v\u00e0 c\u00f3 \u0111\u01a1n v\u1ecb l\u00e0 J\/kg*K.<\/p>\n

C\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh nhi\u1ec7t dung ri\u00eang l\u00e0:<\/p>\n

Q = m * c * \u0394T<\/em><\/p>\n

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

<\/p>\n

  • Q<\/em> l\u00e0 l\u01b0\u1ee3ng nhi\u1ec7t cung c\u1ea5p (Joules – J)<\/li>\n
  • m<\/em> l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a ch\u1ea5t (kil\u00f4gam – kg)<\/li>\n
  • c<\/em> l\u00e0 nhi\u1ec7t dung ri\u00eang (Joules tr\u00ean kilogram-\u0111\u1ed9 Kelvin – J\/kg*K)<\/li>\n
  • \u0394T<\/em> l\u00e0 s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 (\u0111\u1ed9 Kelvin ho\u1eb7c \u0111\u1ed9 Celsius – K ho\u1eb7c \u00b0C)<\/li>\n

    <\/u1><\/p>\n

    \u1ee8ng d\u1ee5ng c\u1ee7a nhi\u1ec7t dung ri\u00eang<\/h2>\n

    Nhi\u1ec7t dung ri\u00eang c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng quan tr\u1ecdng trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y v\u00e0 trong c\u00f4ng nghi\u1ec7p:<\/p>\n

    <\/p>\n

  • Trong c\u00f4ng nghi\u1ec7p, nhi\u1ec7t dung ri\u00eang gi\u00fap nh\u1eadn bi\u1ebft lo\u1ea1i v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p cho nhi\u1ec7t dung c\u1ee5 th\u1ec3.<\/li>\n
  • Trong th\u1ef1c ph\u1ea9m, nhi\u1ec7t dung ri\u00eang c\u1ee7a n\u01b0\u1edbc v\u00e0 d\u1ea7u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u1eddi gian n\u1ea5u ch\u00edn th\u1ef1c ph\u1ea9m.<\/li>\n
  • Trong x\u00e2y d\u1ef1ng, nhi\u1ec7t dung ri\u00eang c\u1ee7a v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng quy\u1ebft \u0111\u1ecbnh vi\u1ec7c \u0111i\u1ec1u h\u00f2a nhi\u1ec7t \u0111\u1ed9 c\u1ee7a t\u00f2a nh\u00e0.<\/li>\n

    <\/u1><\/p>\n

    C\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/h2>\n

    M\u1ed9t s\u1ed1 v\u00ed d\u1ee5 v\u1ec1 nhi\u1ec7t dung ri\u00eang c\u1ee7a c\u00e1c ch\u1ea5t th\u00f4ng d\u1ee5ng:<\/p>\n

    <\/p>\n

  • N\u01b0\u1edbc:<\/b> Nhi\u1ec7t dung ri\u00eang c\u1ee7a n\u01b0\u1edbc l\u00e0 kho\u1ea3ng 4,186 J\/kg*K.<\/li>\n
  • S\u1eaft:<\/b> Nhi\u1ec7t dung ri\u00eang c\u1ee7a s\u1eaft l\u00e0 kho\u1ea3ng 450 J\/kg*K.<\/li>\n
  • Kh\u00f4ng kh\u00ed:<\/b> Nhi\u1ec7t dung ri\u00eang c\u1ee7a kh\u00f4ng kh\u00ed v\u00e0o kho\u1ea3ng 1,005 J\/kg*K.<\/li>\n

    <\/u1><\/p>\n

    Ch\u00ednh b\u1edfi nhi\u1ec7t dung ri\u00eang c\u1ee7a n\u01b0\u1edbc cao, n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u l\u00e0m ch\u1ea5t l\u00e0m m\u00e1t trong c\u00f4ng nghi\u1ec7p v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a nhi\u1ec7t \u0111\u1ed9.<\/p>\n

    K\u1ebft lu\u1eadn<\/h2>\n

    Nhi\u1ec7t dung ri\u00eang l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n nh\u01b0ng quan tr\u1ecdng trong k\u1ef9 thu\u1eadt nhi\u1ec7t, gi\u00fap hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1ch nhi\u1ec7t l\u01b0\u1ee3ng thay \u0111\u1ed5i theo nhi\u1ec7t \u0111\u1ed9 c\u1ee7a v\u1eadt li\u1ec7u. Vi\u1ec7c hi\u1ec3u bi\u1ebft v\u1ec1 nhi\u1ec7t dung ri\u00eang kh\u00f4ng ch\u1ec9 gi\u00fap \u00edch trong h\u1ecdc t\u1eadp m\u00e0 c\u00f2n c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y v\u00e0 c\u00f4ng nghi\u1ec7p.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Nhi\u1ec7t dung ri\u00eang l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u kh\u00e1i ni\u1ec7m, c\u00f4ng th\u1ee9c v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a nhi\u1ec7t dung ri\u00eang trong \u0111\u1eddi s\u1ed1ng v\u00e0 ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/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":"\nNhi\u1ec7t dung ri\u00eang l\u00e0 g\u00ec?<\/title>\n<meta name=\"description\" content=\"Nhi\u1ec7t dung ri\u00eang l\u00e0 g\u00ec? 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