{"id":677786,"date":"2024-10-04T09:51:03","date_gmt":"2024-10-04T08:51:03","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=677786"},"modified":"2024-10-04T09:51:03","modified_gmt":"2024-10-04T08:51:03","slug":"lam-the-nao-ong-xoay-tao-ra-khong-khi-lanh","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/lam-the-nao-ong-xoay-tao-ra-khong-khi-lanh\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u1ed1ng xo\u00e1y t\u1ea1o ra kh\u00f4ng kh\u00ed l\u1ea1nh"},"content":{"rendered":"

C\u00e1ch \u1ed1ng xo\u00e1y t\u1ea1o ra kh\u00f4ng kh\u00ed l\u1ea1nh: T\u00ecm hi\u1ec3u nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ed1ng xo\u00e1y v\u00e0 \u1ee9ng d\u1ee5ng trong vi\u1ec7c l\u00e0m m\u00e1t hi\u1ec7u qu\u1ea3 b\u1eb1ng c\u01a1 kh\u00ed.<\/p>\n

\"L\u00e0m<\/p>\n

L\u00e0m th\u1ebf n\u00e0o \u1ed1ng xo\u00e1y t\u1ea1o ra kh\u00f4ng kh\u00ed l\u1ea1nh<\/h2>\n

Trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t, m\u1ed9t thi\u1ebft b\u1ecb \u0111\u1eb7c bi\u1ec7t g\u1ecdi l\u00e0 \u1ed1ng xo\u00e1y (hay \u1ed1ng vortex) c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o ra kh\u00f4ng kh\u00ed l\u1ea1nh m\u00e0 kh\u00f4ng c\u1ea7n s\u1eed d\u1ee5ng b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng hay \u0111i\u1ec7n n\u0103ng. C\u00f9ng t\u00ecm hi\u1ec3u c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ed1ng xo\u00e1y v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 trong th\u1ef1c t\u1ebf.<\/p>\n

C\u1ea5u t\u1ea1o v\u00e0 Nguy\u00ean l\u00fd Ho\u1ea1t \u0111\u1ed9ng<\/h2>\n

\u1ed0ng xo\u00e1y g\u1ed3m hai ph\u1ea7n ch\u00ednh: th\u00e2n \u1ed1ng v\u00e0 m\u1ed9t s\u1ed1 \u00edt b\u1ed9 ph\u1eadn ph\u00e2n chia kh\u00f4ng kh\u00ed trong \u1ed1ng. Kh\u00f4ng kh\u00ed n\u00e9n \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o \u1ed1ng xo\u00e1y, di chuy\u1ec3n theo chuy\u1ec3n \u0111\u1ed9ng xo\u00e1y b\u00ean trong \u1ed1ng. Qu\u00e1 tr\u00ecnh n\u00e0y t\u1ea1o ra hai lu\u1ed3ng kh\u00f4ng kh\u00ed: m\u1ed9t lu\u1ed3ng kh\u00f4ng kh\u00ed n\u00f3ng v\u00e0 m\u1ed9t lu\u1ed3ng kh\u00f4ng kh\u00ed l\u1ea1nh.<\/p>\n

<\/p>\n

  • Kh\u00f4ng kh\u00ed n\u00e9n v\u00e0o \u1ed1ng xo\u00e1y b\u1ecb \u0111\u1ea9y v\u00e0o tr\u1ea1ng th\u00e1i xo\u00e1y v\u00e0 ph\u00e2n t\u00e1ch trong \u1ed1ng.<\/li>\n
  • Kh\u00ed \u1edf r\u00eca ngo\u00e0i c\u1ee7a \u1ed1ng di chuy\u1ec3n nhanh, l\u00e0m t\u0103ng nhi\u1ec7t \u0111\u1ed9 do hi\u1ec7u \u1ee9ng Joule-Thomson.<\/li>\n
  • Kh\u00f4ng kh\u00ed n\u00f3ng \u0111\u01b0\u1ee3c d\u1eabn ra kh\u1ecfi \u0111\u1ea7u \u1ed1ng.<\/li>\n
  • Ph\u1ea7n kh\u00ed l\u1ea1nh c\u00f2n l\u1ea1i, v\u1edbi n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t th\u1ea5p h\u01a1n, \u0111\u01b0\u1ee3c \u0111\u1ea9y ra t\u1ea1i v\u1ecb tr\u00ed kh\u00e1c c\u1ee7a \u1ed1ng.<\/li>\n

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

    C\u00f4ng Th\u1ee9c v\u00e0 Nguy\u00ean T\u1eafc<\/h2>\n

    Qu\u00e1 tr\u00ecnh ph\u00e2n t\u00e1ch nhi\u1ec7t \u0111\u1ed9 trong \u1ed1ng xo\u00e1y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch qua c\u00e1c c\u00f4ng th\u1ee9c nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc v\u00e0 c\u01a1 h\u1ecdc ch\u1ea5t l\u1ecfng. C\u01a1 b\u1ea3n, hi\u1ec3n th\u1ecb s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t c\u1ee7a kh\u00f4ng kh\u00ed trong qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed9ng xo\u00e1y:<\/p>\n

    T\u1ed5ng nhi\u1ec7t l\u01b0\u1ee3ng (Q) c\u1ee7a kh\u00f4ng kh\u00ed \u0111\u01b0\u1ee3c b\u1ea3o to\u00e0n:<\/p>\n

    Q_in = Q_hot + Q_cold<\/p>\n

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

    <\/p>\n

  • Q_in: Nhi\u1ec7t l\u01b0\u1ee3ng ban \u0111\u1ea7u c\u1ee7a kh\u00f4ng kh\u00ed n\u00e9n.<\/li>\n
  • Q_hot: Nhi\u1ec7t l\u01b0\u1ee3ng c\u1ee7a lu\u1ed3ng kh\u00f4ng kh\u00ed n\u00f3ng.<\/li>\n
  • Q_cold: Nhi\u1ec7t l\u01b0\u1ee3ng c\u1ee7a lu\u1ed3ng kh\u00f4ng kh\u00ed l\u1ea1nh.<\/li>\n

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

    \u1ee8ng d\u1ee5ng c\u1ee7a \u1ed0ng Xo\u00e1y<\/h2>\n

    \u1ed0ng xo\u00e1y c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf nh\u1edd kh\u1ea3 n\u0103ng t\u1ea1o ra kh\u00f4ng kh\u00ed l\u1ea1nh m\u00e0 kh\u00f4ng c\u1ea7n n\u0103ng l\u01b0\u1ee3ng b\u1ed5 sung:<\/p>\n

    <\/p>\n

  • L\u00e0m m\u00e1y l\u00e0m m\u00e1t c\u1ee5c b\u1ed9 trong nh\u1eefng m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p.<\/li>\n
  • H\u1ed7 tr\u1ee3 l\u00e0m m\u00e1t thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 ch\u00ednh x\u00e1c cao.<\/li>\n
  • \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed nh\u00e2n t\u1ea1o m\u00e0 kh\u00f4ng c\u1ea7n d\u00f9ng \u0111\u1ebfn m\u00f4i ch\u1ea5t l\u1ea1nh truy\u1ec1n th\u1ed1ng.<\/li>\n

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

    Nh\u00ecn chung, \u1ed1ng xo\u00e1y l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb k\u1ef3 di\u1ec7u trong k\u1ef9 thu\u1eadt nhi\u1ec7t nh\u1edd kh\u1ea3 n\u0103ng n\u0103ng t\u1ea1o ra kh\u00f4ng kh\u00ed l\u1ea1nh t\u1eeb ngu\u1ed3n kh\u00f4ng kh\u00ed n\u00e9n, v\u00e0 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p v\u00e0 m\u00f4i tr\u01b0\u1eddng s\u1ed1ng h\u00e0ng ng\u00e0y.<\/p>\n","protected":false},"excerpt":{"rendered":"

    C\u00e1ch \u1ed1ng xo\u00e1y t\u1ea1o ra kh\u00f4ng kh\u00ed l\u1ea1nh: T\u00ecm hi\u1ec3u nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ed1ng xo\u00e1y v\u00e0 \u1ee9ng d\u1ee5ng trong vi\u1ec7c l\u00e0m m\u00e1t hi\u1ec7u qu\u1ea3 b\u1eb1ng c\u01a1 kh\u00ed.<\/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":"\nL\u00e0m th\u1ebf n\u00e0o \u1ed1ng xo\u00e1y t\u1ea1o ra kh\u00f4ng kh\u00ed l\u1ea1nh<\/title>\n<meta name=\"description\" content=\"C\u00e1ch \u1ed1ng xo\u00e1y t\u1ea1o ra kh\u00f4ng kh\u00ed l\u1ea1nh: T\u00ecm hi\u1ec3u nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ed1ng xo\u00e1y v\u00e0 \u1ee9ng d\u1ee5ng trong vi\u1ec7c l\u00e0m m\u00e1t hi\u1ec7u qu\u1ea3 b\u1eb1ng c\u01a1 kh\u00ed.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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l\\u1ea1nh\",\"isPartOf\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/lam-the-nao-ong-xoay-tao-ra-khong-khi-lanh\/#primaryimage\"},\"datePublished\":\"2024-10-04T08:51:03+00:00\",\"dateModified\":\"2024-10-04T08:51:03+00:00\",\"author\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"C\\u00e1ch \\u1ed1ng xo\\u00e1y t\\u1ea1o ra kh\\u00f4ng kh\\u00ed l\\u1ea1nh: T\\u00ecm hi\\u1ec3u nguy\\u00ean l\\u00fd ho\\u1ea1t \\u0111\\u1ed9ng c\\u1ee7a \\u1ed1ng xo\\u00e1y v\\u00e0 \\u1ee9ng d\\u1ee5ng trong vi\\u1ec7c l\\u00e0m m\\u00e1t hi\\u1ec7u qu\\u1ea3 b\\u1eb1ng c\\u01a1 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