{"id":710658,"date":"2024-08-31T06:11:25","date_gmt":"2024-08-31T05:11:25","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=710658"},"modified":"2024-08-31T06:11:25","modified_gmt":"2024-08-31T05:11:25","slug":"cach-mot-tam-lo-do-luu-luong-nhu-the-nao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/cach-mot-tam-lo-do-luu-luong-nhu-the-nao\/","title":{"rendered":"C\u00e1ch m\u1ed9t t\u1ea5m l\u1ed7 \u0111o l\u01b0u l\u01b0\u1ee3ng nh\u01b0 th\u1ebf n\u00e0o"},"content":{"rendered":"

C\u00e1ch m\u1ed9t t\u1ea5m l\u1ed7 \u0111o l\u01b0u l\u01b0\u1ee3ng nh\u01b0 th\u1ebf n\u00e0o: t\u00ecm hi\u1ec3u c\u00e1ch ho\u1ea1t \u0111\u1ed9ng, nguy\u00ean l\u00fd, v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a t\u1ea5m l\u1ed7 \u0111o l\u01b0u l\u01b0\u1ee3ng trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/p>\n

\"C\u00e1ch<\/p>\n

C\u00e1ch m\u1ed9t t\u1ea5m l\u1ed7 \u0111o l\u01b0u l\u01b0\u1ee3ng nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n

Trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t, m\u1ed9t t\u1ea5m l\u1ed7<\/b> (orifice plate) l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng d\u00f9ng \u0111\u1ec3 \u0111o l\u01b0u l\u01b0\u1ee3ng c\u1ee7a d\u00f2ng ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed. H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00e1ch th\u1ee9c t\u1ea5m l\u1ed7 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o l\u01b0u l\u01b0\u1ee3ng.<\/p>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u1ea5m l\u1ed7<\/h2>\n

T\u1ea5m l\u1ed7 l\u00e0 m\u1ed9t t\u1ea5m kim lo\u1ea1i m\u1ecfng v\u1edbi m\u1ed9t l\u1ed7 c\u00f3 \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf \u0111\u01b0\u1ee3c kho\u00e9t ch\u00ednh x\u00e1c \u1edf gi\u1eefa. Khi ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed ch\u1ea3y qua t\u1ea5m l\u1ed7, v\u1eadn t\u1ed1c c\u1ee7a ch\u00fang t\u0103ng l\u00ean trong l\u00fac \u00e1p su\u1ea5t gi\u1ea3m xu\u1ed1ng, c\u0169ng \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nh\u01b0 l\u00e0 hi\u1ec7u \u1ee9ng Bernoulli. B\u1eb1ng c\u00e1ch \u0111o s\u1ef1 ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t tr\u01b0\u1edbc v\u00e0 sau khi ch\u1ea5t l\u1ecfng \u0111i qua t\u1ea5m l\u1ed7, ta c\u00f3 th\u1ec3 t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c l\u01b0u l\u01b0\u1ee3ng.<\/p>\n

Ph\u01b0\u01a1ng tr\u00ecnh Bernoulli v\u00e0 \u0110\u1ecbnh lu\u1eadt b\u1ea3o to\u00e0n \u0111\u1ed9ng l\u01b0\u1ee3ng<\/h2>\n

Ph\u01b0\u01a1ng tr\u00ecnh Bernoulli ch\u00ednh l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 hi\u1ec3u c\u00e1ch t\u1ea5m l\u1ed7 ho\u1ea1t \u0111\u1ed9ng. Ph\u01b0\u01a1ng tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 b\u1edfi:<\/p>\n

    \n
  • \\(P_1 + \\frac{1}{2}\\rho v_1^2 = P_2 + \\frac{1}{2}\\rho v_2^2\\)<\/li>\n
  • \u1ede \u0111\u00e2y:\n
      \n
    • \\(P_1\\), \\(P_2\\): \u00e1p su\u1ea5t t\u1ea1i c\u00e1c \u0111i\u1ec3m tr\u01b0\u1edbc v\u00e0 sau t\u1ea5m l\u1ed7<\/li>\n
    • \\(\\rho\\): m\u1eadt \u0111\u1ed9 c\u1ee7a ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed<\/li>\n
    • \\(v_1\\), \\(v_2\\): v\u1eadn t\u1ed1c c\u1ee7a ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed tr\u01b0\u1edbc v\u00e0 sau t\u1ea5m l\u1ed7<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

      Ph\u01b0\u01a1ng tr\u00ecnh l\u01b0u l\u01b0\u1ee3ng<\/h2>\n

      D\u1ef1a tr\u00ean s\u1ef1 ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t, ta c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh c\u0103n b\u1ea3n \u0111\u1ec3 t\u00ednh l\u01b0u l\u01b0\u1ee3ng nh\u01b0 sau:<\/p>\n

        \n
      • Qi = C \\cdot A \\cdot \\sqrt{\\frac{2\\Delta P}{\\rho}}<\/li>\n
      • Trong \u0111\u00f3:\n
          \n
        • Qi: l\u01b0u l\u01b0\u1ee3ng<\/li>\n
        • C: h\u1ec7 s\u1ed1 x\u1ea3<\/li>\n
        • A: di\u1ec7n t\u00edch c\u1ee7a l\u1ed7<\/li>\n
        • \\(\\Delta P\\): ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t<\/li>\n
        • \\(\\rho\\): m\u1eadt \u0111\u1ed9 c\u1ee7a ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

          \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a t\u1ea5m l\u1ed7<\/h2>\n
            \n
          • \u01afu \u0111i\u1ec3m:\n
              \n
            • D\u1ec5 d\u00e0ng l\u1eafp \u0111\u1eb7t v\u00e0 b\u1ea3o tr\u00ec<\/li>\n
            • Chi ph\u00ed th\u1ea5p<\/li>\n
            • \u0110\u1ed9 ch\u00ednh x\u00e1c cao trong nhi\u1ec1u \u1ee9ng d\u1ee5ng<\/li>\n<\/ul>\n<\/li>\n
            • Nh\u01b0\u1ee3c \u0111i\u1ec3m:\n
                \n
              • G\u00e2y m\u1ea5t \u00e1p su\u1ea5t l\u1edbn<\/li>\n
              • Kh\u00f4ng th\u00edch h\u1ee3p cho c\u00e1c l\u01b0u l\u01b0\u1ee3ng thay \u0111\u1ed5i li\u00ean t\u1ee5c<\/li>\n
              • \u0110\u1ed9 ch\u00ednh x\u00e1c b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi s\u1ef1 ch\u1ea3y lo\u1ea1n xu\u1ea5t hi\u1ec7n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                Nh\u01b0 v\u1eady, t\u1ea5m l\u1ed7 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 \u0111o l\u01b0u l\u01b0\u1ee3ng c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3 v\u00e0 ph\u1ed5 bi\u1ebfn trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t. Hi\u1ec3u r\u00f5 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 nh\u1eefng \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 s\u1ebd gi\u00fap c\u00e1c k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 khoa h\u1ecdc t\u1ed1i \u01b0u h\u00f3a qu\u00e1 tr\u00ecnh l\u00e0m vi\u1ec7c v\u00e0 nghi\u00ean c\u1ee9u.<\/p>\n","protected":false},"excerpt":{"rendered":"

                C\u00e1ch m\u1ed9t t\u1ea5m l\u1ed7 \u0111o l\u01b0u l\u01b0\u1ee3ng nh\u01b0 th\u1ebf n\u00e0o: t\u00ecm hi\u1ec3u c\u00e1ch ho\u1ea1t \u0111\u1ed9ng, nguy\u00ean l\u00fd, v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a t\u1ea5m l\u1ed7 \u0111o l\u01b0u l\u01b0\u1ee3ng trong l\u0129nh v\u1ef1c 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":"\nC\u00e1ch m\u1ed9t t\u1ea5m l\u1ed7 \u0111o l\u01b0u l\u01b0\u1ee3ng nh\u01b0 th\u1ebf n\u00e0o<\/title>\n<meta name=\"description\" content=\"C\u00e1ch m\u1ed9t t\u1ea5m l\u1ed7 \u0111o l\u01b0u l\u01b0\u1ee3ng nh\u01b0 th\u1ebf n\u00e0o: t\u00ecm hi\u1ec3u c\u00e1ch ho\u1ea1t \u0111\u1ed9ng, nguy\u00ean l\u00fd, v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a t\u1ea5m l\u1ed7 \u0111o l\u01b0u l\u01b0\u1ee3ng trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.thermal-engineering.org\/vi\/cach-mot-tam-lo-do-luu-luong-nhu-the-nao\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00e1ch m\u1ed9t t\u1ea5m l\u1ed7 \u0111o l\u01b0u l\u01b0\u1ee3ng nh\u01b0 th\u1ebf n\u00e0o\" \/>\n<meta property=\"og:description\" content=\"C\u00e1ch m\u1ed9t t\u1ea5m l\u1ed7 \u0111o l\u01b0u l\u01b0\u1ee3ng nh\u01b0 th\u1ebf n\u00e0o: t\u00ecm hi\u1ec3u c\u00e1ch ho\u1ea1t \u0111\u1ed9ng, nguy\u00ean l\u00fd, v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a t\u1ea5m l\u1ed7 \u0111o l\u01b0u l\u01b0\u1ee3ng trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermal-engineering.org\/vi\/cach-mot-tam-lo-do-luu-luong-nhu-the-nao\/\" \/>\n<meta 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