{"id":1389,"date":"2024-10-03T08:54:03","date_gmt":"2024-10-03T08:54:03","guid":{"rendered":"https:\/\/maynenkhiadong.com\/?p=1389"},"modified":"2024-10-03T08:54:03","modified_gmt":"2024-10-03T08:54:03","slug":"toi-uu-hieu-suat-cho-he-thong-cap-khi-nen-part-2-cach-tinh-toan-hieu-suat","status":"publish","type":"post","link":"https:\/\/maynenkhiadong.com\/?p=1389","title":{"rendered":"T\u1ed1i \u01afu Hi\u1ec7u Su\u1ea5t Cho H\u1ec7 Th\u1ed1ng C\u1ea5p Kh\u00ed N\u00e9n : Part 2 : C\u00e1ch t\u00ednh to\u00e0n hi\u1ec7u su\u1ea5t"},"content":{"rendered":"

C\u00f3 m\u1ed9t v\u00e0i c\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t m\u00e1y n\u00e9n kh\u00ed kh\u00e1c nhau, nh\u01b0ng c\u00f4ng th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 c\u00f4ng th\u1ee9c entropy (isentropic efficiency). C\u00f4ng th\u1ee9c n\u00e0y cho bi\u1ebft m\u1ee9c chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh n\u0103ng l\u01b0\u1ee3ng kh\u00ed n\u00e9n hi\u1ec7u qu\u1ea3 nh\u01b0 th\u1ebf n\u00e0o. C\u00f4ng th\u1ee9c n\u00e0y \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y d\u01b0\u1edbi d\u1ea1ng ph\u1ea7n tr\u0103m, v\u1edbi ph\u1ea7n tr\u0103m cao h\u01a1n c\u00f3 ngh\u0129a l\u00e0 m\u00e1y n\u00e9n c\u1ee7a b\u1ea1n chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh kh\u00ed n\u00e9n t\u1ed1t h\u01a1n.<\/p>

C\u00f4ng th\u1ee9c nh\u01b0 entropy \u0111\u01b0\u1ee3c t\u00ednh nh\u01b0 sau :<\/p>

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0M\u1ee9c n\u0103ng l\u01b0\u1ee3ng ti\u00eau th\u1ee5 l\u00fd t\u01b0\u1edfng(kW)<\/p>\n

Hi\u1ec7u su\u1ea5t (%) =\u00a0\u00a0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0<\/del><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0M\u1ee9c n\u0103ng l\u01b0\u1ee3ng ti\u00eau th\u1ee5 th\u1ef1c t\u1ebf (kW)<\/p><\/div><\/div>

C\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t \u0111\u1eb3ng nhi\u1ec7t<\/h2>

\u0110\u1eb3ng nhi\u1ec7t l\u00e0 qu\u00e1 tr\u00ecnh qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i tr\u1ea1ng th\u00e1i c\u1ee7a ch\u1ea5t kh\u00ed trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng thay \u0111\u1ed5i. C\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t \u0111\u1eb3ng nhi\u1ec7t l\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n hi\u1ec7u su\u1ea5t trong m\u00f4i tr\u01b0\u1eddng ph\u00f2ng lab, c\u00f3 nhi\u1ec7t \u0111\u1ed9 c\u1ed1 \u0111\u1ecbnh. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y t\u00ednh ch\u00ednh x\u00e1c cao h\u01a1n ph\u01b0\u01a1ng ph\u00e1p entropy.<\/p>

Hi\u1ec7u su\u1ea5t \u0111\u1eb3ng nhi\u1ec7t (%)= c\u00f4ng su\u1ea5t \u0111\u1ea7u v\u00e0o th\u1ef1c t\u1ebf (kW) \/ c\u00f4ng su\u1ea5t \u0111\u1eb3ng nhi\u1ec7t (kW)<\/p>

C\u00f4ng su\u1ea5t \u0111\u1eb3ng nhi\u1ec7t (kW) = P1<\/sub> x Q1<\/sub> x loge<\/sub>r\/36,7<\/p>

  • P1<\/sub> = \u00c1p su\u1ea5t tuy\u1ec7t \u0111\u1ed1i c\u1ee7a kh\u00ed \u0111\u1ea7u v\u00e0o kg\/cm2<\/sup><\/li>\n\n
  • P2<\/sub> = \u00c1p su\u1ea5t tuy\u1ec7t \u0111\u1ed1i c\u1ee7a kh\u00ed \u0111\u1ea7u ra kg\/cm2<\/sup><\/li>\n\n
  • Q1<\/sub>= L\u01b0u l\u01b0\u1ee3ng kh\u00ed xu\u1ea5t ra m3<\/sup>\/h<\/li>\n\n
  • r = P2<\/sub> \/ P1<\/sub><\/li><\/ul>

    C\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t theo th\u1ec3 t\u00edch<\/h2>

    \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 L\u01b0u l\u01b0\u1ee3ng kh\u00ed \u0111\u1ea7u ra (m3<\/sup>\/h)<\/p>\n

    Hi\u1ec7u su\u1ea5t (%) =\u00a0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/del><\/p>\n

    \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0L\u01b0u l\u01b0\u1ee3ng c\u1ee7a m\u00e1y n\u00e9n kh\u00ed (m3<\/sup>\/h)<\/p>

    L\u01b0u l\u01b0\u1ee3ng c\u1ee7a m\u00e1y n\u00e9n kh\u00ed (m3<\/sup>\/h) = \u03c0 x D2<\/sup> x L x S x \u03c7 x n<\/p>

    • D = \u0110\u01b0\u1eddng k\u00ednh xi lanh<\/li>\n\n
    • L = H\u00e0nh tr\u00ecnh xi lanh<\/li>\n\n
    • S = T\u1ed1c \u0111\u1ed9 n\u00e9n v\u00f2ng \/ ph\u00fat (rpm)<\/li>\n\n
    • \u03c7 = 1 n\u1ebfu l\u00e0 xi lanh 1 chi\u1ec1u<\/li>\n\n
    • 2 n\u1ebfu l\u00e0 xi lanh 2 chi\u1ec1u <\/li>\n\n
    • n = S\u1ed1 l\u01b0\u1ee3ng xi lanh<\/li><\/ul>

      N\u1ebfu b\u1ea1n kh\u00f4ng c\u1ea7n t\u00ednh to\u00e1n ch\u00ednh x\u00e1c hi\u1ec7u su\u1ea5t c\u1ee7a m\u00e1y n\u00e9n, ch\u00fang ta c\u00f3 th\u1ec3 \u01b0\u1edbc t\u00ednh s\u01a1 b\u1ed9 v\u1ec1 hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t s\u1ed1 lo\u1ea1i m\u00e1y n\u00e9n kh\u00ed ch\u00ednh
      – M\u00e1y n\u00e9n kh\u00ed ly t\u00e2m : 70-85%
      – M\u00e1y n\u00e9n kh\u00ed pit-t\u00f4ng t\u1ed1c \u0111\u1ed9 cao : 72-85%
      – M\u00e1y n\u00e9n kh\u00ed pit-t\u00f4ng t\u1ed1c \u0111\u1ed9 th\u1ea5p: 75-90%
      – M\u00e1y n\u00e9n kh\u00ed tr\u1ee5c v\u00edt : 65-75%<\/p><\/blockquote>","protected":false},"excerpt":{"rendered":"

      C\u00f3 m\u1ed9t v\u00e0i c\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t m\u00e1y n\u00e9n kh\u00ed kh\u00e1c nhau, nh\u01b0ng c\u00f4ng th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 c\u00f4ng th\u1ee9c entropy (isentropic efficiency). C\u00f4ng th\u1ee9c n\u00e0y cho bi\u1ebft m\u1ee9c chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh n\u0103ng l\u01b0\u1ee3ng kh\u00ed n\u00e9n hi\u1ec7u qu\u1ea3 nh\u01b0 th\u1ebf n\u00e0o. C\u00f4ng th\u1ee9c n\u00e0y \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y […]\n","protected":false},"author":1,"featured_media":1351,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[111],"tags":[116,113,114,117,115],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/maynenkhiadong.com\/wp-content\/uploads\/2024\/06\/OIP-1.jpg","_links":{"self":[{"href":"https:\/\/maynenkhiadong.com\/index.php?rest_route=\/wp\/v2\/posts\/1389"}],"collection":[{"href":"https:\/\/maynenkhiadong.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/maynenkhiadong.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/maynenkhiadong.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/maynenkhiadong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1389"}],"version-history":[{"count":17,"href":"https:\/\/maynenkhiadong.com\/index.php?rest_route=\/wp\/v2\/posts\/1389\/revisions"}],"predecessor-version":[{"id":1408,"href":"https:\/\/maynenkhiadong.com\/index.php?rest_route=\/wp\/v2\/posts\/1389\/revisions\/1408"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/maynenkhiadong.com\/index.php?rest_route=\/wp\/v2\/media\/1351"}],"wp:attachment":[{"href":"https:\/\/maynenkhiadong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1389"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/maynenkhiadong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1389"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/maynenkhiadong.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1389"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}