{"id":703173,"date":"2024-08-16T11:24:24","date_gmt":"2024-08-16T10:24:24","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=703173"},"modified":"2024-08-16T11:24:24","modified_gmt":"2024-08-16T10:24:24","slug":"thiet-bi-do-luu-luong-khi-bang-khoi-nhiet-nguyen-ly-va-ung-dung","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/thiet-bi-do-luu-luong-khi-bang-khoi-nhiet-nguyen-ly-va-ung-dung\/","title":{"rendered":"Thi\u1ebft B\u1ecb \u0110o L\u01b0u L\u01b0\u1ee3ng Kh\u00ed B\u1eb1ng Kh\u1ed1i Nhi\u1ec7t | Nguy\u00ean L\u00fd v\u00e0 \u1ee8ng D\u1ee5ng"},"content":{"rendered":"

Thi\u1ebft b\u1ecb \u0111o l\u01b0u l\u01b0\u1ee3ng kh\u00ed b\u1eb1ng kh\u1ed1i nhi\u1ec7t: t\u00ecm hi\u1ec3u nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/p>\n

\"Thi\u1ebft<\/p>\n

Thi\u1ebft B\u1ecb \u0110o L\u01b0u L\u01b0\u1ee3ng Kh\u00ed B\u1eb1ng Kh\u1ed1i Nhi\u1ec7t | Nguy\u00ean L\u00fd v\u00e0 \u1ee8ng D\u1ee5ng<\/h2>\n

Thi\u1ebft b\u1ecb \u0111o l\u01b0u l\u01b0\u1ee3ng kh\u00ed b\u1eb1ng kh\u1ed1i nhi\u1ec7t (thermal mass flow meter) l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o l\u01b0u l\u01b0\u1ee3ng c\u1ee7a kh\u00ed ho\u1eb7c ch\u1ea5t l\u1ecfng d\u1ef1a tr\u00ean s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u1edbi thi\u1ec7u v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb n\u00e0y v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 trong th\u1ef1c t\u1ebf.<\/p>\n

Nguy\u00ean L\u00fd Ho\u1ea1t \u0110\u1ed9ng<\/h3>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb \u0111o l\u01b0u l\u01b0\u1ee3ng kh\u00ed b\u1eb1ng kh\u1ed1i nhi\u1ec7t d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng truy\u1ec1n nhi\u1ec7t. Khi d\u00f2ng kh\u00ed ho\u1eb7c ch\u1ea5t l\u1ecfng ch\u1ea3y qua thi\u1ebft b\u1ecb, n\u00f3 s\u1ebd h\u1ea5p th\u1ee5 ho\u1eb7c truy\u1ec1n nhi\u1ec7t. C\u00f3 hai ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh \u0111\u1ec3 \u0111o l\u01b0u l\u01b0\u1ee3ng:<\/p>\n

<\/p>\n

  • Ph\u01b0\u01a1ng ph\u00e1p khu\u1ebfch t\u00e1n nhi\u1ec7t (Thermal Dispersion):<\/b> M\u1ed9t sensor nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c \u0111\u1eb7t trong d\u00f2ng ch\u1ea3y v\u00e0 \u0111\u01b0\u1ee3c gi\u1eef \u1edf nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n nhi\u1ec7t \u0111\u1ed9 c\u1ee7a d\u00f2ng kh\u00ed. Khi kh\u00ed ch\u1ea3y qua, n\u00f3 l\u00e0m ngu\u1ed9i sensor n\u00e0y. L\u01b0u l\u01b0\u1ee3ng kh\u00ed l\u1edbn h\u01a1n s\u1ebd d\u1eabn \u0111\u1ebfn s\u1ef1 l\u00e0m ngu\u1ed9i nhanh h\u01a1n, v\u00e0 th\u00f4ng qua vi\u1ec7c \u0111o l\u01b0\u1eddng c\u00f4ng su\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 c\u1ee7a sensor, ta c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh l\u01b0u l\u01b0\u1ee3ng kh\u00ed.<\/li>\n
  • Ph\u01b0\u01a1ng ph\u00e1p ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 (Temperature Differential):<\/b> Thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng hai sensor nhi\u1ec7t \u0111\u1ed9: m\u1ed9t sensor \u0111o nhi\u1ec7t \u0111\u1ed9 c\u1ee7a d\u00f2ng kh\u00ed v\u00e0 m\u1ed9t sensor \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng. S\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa hai nhi\u1ec7t \u0111\u1ed9 n\u00e0y s\u1ebd ph\u1ea3n \u00e1nh l\u01b0u l\u01b0\u1ee3ng c\u1ee7a d\u00f2ng ch\u1ea3y. C\u00f4ng th\u1ee9c c\u01a1 b\u1ea3n th\u01b0\u1eddng d\u00f9ng l\u00e0:<\/li>\n

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

    \n \\[
    \n Q = k (T_{hot} – T_{cold})
    \n \\]\n<\/div>\n

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

    <\/p>\n

  • Q<\/i>: L\u01b0u l\u01b0\u1ee3ng kh\u00ed<\/li>\n
  • k<\/i>: H\u1eb1ng s\u1ed1 t\u1ec9 l\u1ec7 ph\u1ee5 thu\u1ed9c v\u00e0o thi\u1ebft b\u1ecb<\/li>\n
  • Thot<\/sub><\/i>: Nhi\u1ec7t \u0111\u1ed9 sensor \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng<\/li>\n
  • Tcold<\/sub><\/i>: Nhi\u1ec7t \u0111\u1ed9 sensor \u0111o d\u00f2ng kh\u00ed<\/li>\n

    <\/o1><\/p>\n

    \u1ee8ng D\u1ee5ng Trong Th\u1ef1c T\u1ebf<\/h3>\n

    Thi\u1ebft b\u1ecb \u0111o l\u01b0u l\u01b0\u1ee3ng kh\u00ed b\u1eb1ng kh\u1ed1i nhi\u1ec7t c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau.<\/p>\n

    <\/p>\n

  • Ng\u00e0nh C\u00f4ng Nghi\u1ec7p Kh\u00ed:<\/b> \u0110o l\u01b0\u1ee3ng kh\u00ed t\u1ef1 nhi\u00ean, kh\u00ed ni-t\u01a1, oxy v\u00e0 c\u00e1c lo\u1ea1i kh\u00ed c\u00f4ng nghi\u1ec7p kh\u00e1c trong c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng ph\u00e2n ph\u1ed1i.<\/li>\n
  • Ng\u00e0nh \u0110\u1ed3 U\u1ed1ng v\u00e0 Th\u1ef1c Ph\u1ea9m:<\/b> Qu\u1ea3n l\u00fd v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng kh\u00ed trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m.<\/li>\n
  • Ng\u00e0nh Y T\u1ebf:<\/b> S\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o l\u01b0u l\u01b0\u1ee3ng c\u1ee7a kh\u00ed y t\u1ebf nh\u01b0 oxy v\u00e0 nitrous oxide trong c\u00e1c h\u1ec7 th\u1ed1ng cung c\u1ea5p kh\u00ed cho b\u1ec7nh vi\u1ec7n.<\/li>\n
  • Ng\u00e0nh N\u0103ng L\u01b0\u1ee3ng:<\/b> Theo d\u00f5i v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng c\u1ee7a c\u00e1c kh\u00ed ch\u00e1y trong c\u00e1c nh\u00e0 m\u00e1y \u0111i\u1ec7n, nh\u00e0 m\u00e1y h\u00f3a ch\u1ea5t v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng s\u1ea3n xu\u1ea5t n\u0103ng l\u01b0\u1ee3ng kh\u00e1c.<\/li>\n

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

    Thi\u1ebft b\u1ecb \u0111o l\u01b0u l\u01b0\u1ee3ng kh\u00ed b\u1eb1ng kh\u1ed1i nhi\u1ec7t l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p, gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c trong vi\u1ec7c \u0111o l\u01b0\u1eddng v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng kh\u00ed. Hy v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y \u0111\u00e3 cung c\u1ea5p cho b\u1ea1n nh\u1eefng th\u00f4ng tin c\u01a1 b\u1ea3n v\u00e0 h\u1eefu \u00edch v\u1ec1 thi\u1ebft b\u1ecb n\u00e0y.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Thi\u1ebft b\u1ecb \u0111o l\u01b0u l\u01b0\u1ee3ng kh\u00ed b\u1eb1ng kh\u1ed1i nhi\u1ec7t: t\u00ecm hi\u1ec3u nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n trong 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":"\nThi\u1ebft B\u1ecb \u0110o L\u01b0u L\u01b0\u1ee3ng Kh\u00ed B\u1eb1ng Kh\u1ed1i Nhi\u1ec7t | Nguy\u00ean L\u00fd v\u00e0 \u1ee8ng D\u1ee5ng<\/title>\n<meta name=\"description\" content=\"Thi\u1ebft b\u1ecb \u0111o l\u01b0u l\u01b0\u1ee3ng kh\u00ed b\u1eb1ng kh\u1ed1i nhi\u1ec7t: t\u00ecm hi\u1ec3u nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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