{"id":704309,"date":"2024-08-03T08:22:43","date_gmt":"2024-08-03T07:22:43","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=704309"},"modified":"2024-08-03T08:22:43","modified_gmt":"2024-08-03T07:22:43","slug":"su-khong-phu-hop-trong-gian-no-nhiet-cua-cac-vat-lieu","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/su-khong-phu-hop-trong-gian-no-nhiet-cua-cac-vat-lieu\/","title":{"rendered":"S\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p trong gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u"},"content":{"rendered":"

S\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p trong gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u: T\u00ecm hi\u1ec3u t\u1ea1i sao c\u00e1c v\u1eadt li\u1ec7u gi\u00e3n n\u1edf kh\u00e1c nhau khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a n\u00f3 trong k\u1ef9 thu\u1eadt.<\/p>\n

\"S\u1ef1<\/p>\n

S\u1ef1 Kh\u00f4ng Ph\u00f9 H\u1ee3p Trong Gi\u00e3n N\u1edf Nhi\u1ec7t c\u1ee7a C\u00e1c V\u1eadt Li\u1ec7u<\/h2>\n

Trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t, m\u1ed9t kh\u00e1i ni\u1ec7m quan tr\u1ecdng v\u00e0 th\u01b0\u1eddng g\u1eb7p l\u00e0 s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u. Gi\u00e3n n\u1edf nhi\u1ec7t x\u1ea3y ra khi v\u1eadt li\u1ec7u thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc do s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9. M\u1ed7i lo\u1ea1i v\u1eadt li\u1ec7u c\u00f3 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t kh\u00e1c nhau, ngh\u0129a l\u00e0 ch\u00fang s\u1ebd gi\u00e3n n\u1edf ho\u1eb7c co l\u1ea1i \u1edf m\u1ee9c \u0111\u1ed9 kh\u00e1c nhau khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i.<\/p>\n

L\u00fd Thuy\u1ebft Gi\u00e3n N\u1edf Nhi\u1ec7t<\/h2>\n

Gi\u00e3n n\u1edf nhi\u1ec7t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh ba lo\u1ea1i ch\u00ednh: gi\u00e3n n\u1edf tuy\u1ebfn t\u00ednh, gi\u00e3n n\u1edf di\u1ec7n t\u00edch v\u00e0 gi\u00e3n n\u1edf th\u1ec3 t\u00edch. C\u00f4ng th\u1ee9c gi\u00e3n n\u1edf tuy\u1ebfn t\u00ednh c\u01a1 b\u1ea3n \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n nh\u01b0 sau:<\/p>\n

L = L0<\/sub>(1 + \u03b1\u0394T)<\/p>\n

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

<\/p>\n

  • L l\u00e0 chi\u1ec1u d\u00e0i m\u1edbi c\u1ee7a v\u1eadt li\u1ec7u sau khi gi\u00e3n n\u1edf<\/li>\n
  • L0<\/sub> l\u00e0 chi\u1ec1u d\u00e0i ban \u0111\u1ea7u c\u1ee7a v\u1eadt li\u1ec7u<\/li>\n
  • \u03b1 l\u00e0 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf tuy\u1ebfn t\u00ednh c\u1ee7a v\u1eadt li\u1ec7u<\/li>\n
  • \u0394T l\u00e0 s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9<\/li>\n

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

    H\u1ec7 S\u1ed1 Gi\u00e3n N\u1edf Nhi\u1ec7t<\/h2>\n

    M\u1ed7i v\u1eadt li\u1ec7u c\u00f3 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t ri\u00eang (\u03b1), th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng \u0111\u01a1n v\u1ecb 1\/\u00b0C ho\u1eb7c 1\/K. V\u00ed d\u1ee5, h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a nh\u00f4m kho\u1ea3ng 23 x 10-6<\/sup> 1\/\u00b0C, trong khi \u0111\u00f3 c\u1ee7a th\u00e9p l\u00e0 kho\u1ea3ng 11 x 10-6<\/sup> 1\/\u00b0C. \u0110i\u1ec1u n\u00e0y ngh\u0129a l\u00e0 nh\u00f4m s\u1ebd gi\u00e3n n\u1edf nhi\u1ec1u h\u01a1n th\u00e9p khi c\u00f3 c\u00f9ng m\u1ed9t s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9.<\/p>\n

    \u1ea2nh H\u01b0\u1edfng c\u1ee7a S\u1ef1 Kh\u00f4ng Ph\u00f9 H\u1ee3p Trong Gi\u00e3n N\u1edf Nhi\u1ec7t<\/h2>\n

    S\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p trong gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 g\u00e2y ra nhi\u1ec1u v\u1ea5n \u0111\u1ec1 trong k\u1ef9 thu\u1eadt v\u00e0 x\u00e2y d\u1ef1ng. Khi c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng nhau trong m\u1ed9t c\u1ea5u tr\u00fac, s\u1ef1 kh\u00e1c bi\u1ec7t trong gi\u00e3n n\u1edf nhi\u1ec7t c\u00f3 th\u1ec3 g\u00e2y ra \u1ee9ng su\u1ea5t v\u00e0, trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, l\u00e0m h\u1ecfng c\u1ea5u tr\u00fac. M\u1ed9t s\u1ed1 v\u00ed d\u1ee5 bao g\u1ed3m:<\/p>\n

    <\/p>\n

  • Li\u00ean k\u1ebft gi\u1eefa kim lo\u1ea1i v\u00e0 phi kim lo\u1ea1i:<\/b> Khi g\u1eafn k\u1ebft kim lo\u1ea1i v\u00e0 phi kim lo\u1ea1i, ch\u1eb3ng h\u1ea1n nh\u01b0 g\u1ed7 v\u1edbi th\u00e9p, s\u1ef1 kh\u00e1c bi\u1ec7t trong gi\u00e3n n\u1edf nhi\u1ec7t c\u00f3 th\u1ec3 l\u00e0m n\u1ee9t ho\u1eb7c bi\u1ebfn d\u1ea1ng ch\u1ed7 n\u1ed1i.<\/li>\n
  • M\u1ed1i h\u00e0n v\u00e0 bu l\u00f4ng:<\/b> Khi s\u1eed d\u1ee5ng c\u00e1c m\u1ed1i h\u00e0n ho\u1eb7c bu l\u00f4ng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c b\u1ed9 ph\u1eadn kh\u00e1c nhau, s\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p trong gi\u00e3n n\u1edf nhi\u1ec7t c\u00f3 th\u1ec3 l\u00e0m n\u1ee9t ho\u1eb7c l\u00e0m l\u1ecfng c\u00e1c k\u1ebft n\u1ed1i.<\/li>\n
  • Thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed:<\/b> Trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, c\u00e1c th\u00e0nh ph\u1ea7n c\u1ea5u t\u1ea1o t\u1eeb c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau. S\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 c\u00f3 th\u1ec3 l\u00e0m c\u00e1c vi m\u1ea1ch bong tr\u00f3c ho\u1eb7c g\u00e3y n\u1ee9t.<\/li>\n

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

    C\u00e1ch Kh\u1eafc Ph\u1ee5c<\/h2>\n

    \u0110\u1ec3 gi\u1ea3m thi\u1ec3u \u1ea3nh h\u01b0\u1edfng c\u1ee7a s\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p trong gi\u00e3n n\u1edf nhi\u1ec7t, c\u00e1c k\u1ef9 s\u01b0 th\u01b0\u1eddng:<\/p>\n

    <\/p>\n

  • Ch\u1ecdn v\u1eadt li\u1ec7u h\u1ee3p l\u00fd:<\/b> S\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u c\u00f3 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t g\u1ea7n nhau trong c\u00f9ng m\u1ed9t \u1ee9ng d\u1ee5ng.<\/li>\n
  • Thi\u1ebft k\u1ebf linh ho\u1ea1t:<\/b> Thi\u1ebft k\u1ebf c\u00e1c c\u1ea5u tr\u00fac v\u1edbi kh\u1ea3 n\u0103ng linh ho\u1ea1t \u0111\u1ec3 b\u00f9 \u0111\u1eafp cho s\u1ef1 gi\u00e3n n\u1edf v\u00e0 co l\u1ea1i c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u.<\/li>\n
  • S\u1eed d\u1ee5ng v\u1eadt li\u1ec7u b\u00f9 tr\u1eeb:<\/b> S\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u \u0111\u1eb7c bi\u1ec7t nh\u01b0 m\u00e0ng nhi\u1ec7t \u0111\u1ec3 b\u00f9 \u0111\u1eafp cho s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau.<\/li>\n

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

    Hi\u1ec3u r\u00f5 v\u00e0 qu\u1ea3n l\u00fd s\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p trong gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh an to\u00e0n v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u00e1c c\u1ea5u tr\u00fac v\u00e0 thi\u1ebft b\u1ecb.<\/p>\n","protected":false},"excerpt":{"rendered":"

    S\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p trong gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u: T\u00ecm hi\u1ec3u t\u1ea1i sao c\u00e1c v\u1eadt li\u1ec7u gi\u00e3n n\u1edf kh\u00e1c nhau khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a n\u00f3 trong k\u1ef9 thu\u1eadt.<\/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":"\nS\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p trong gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u<\/title>\n<meta name=\"description\" content=\"S\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p trong gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u: T\u00ecm hi\u1ec3u t\u1ea1i sao c\u00e1c v\u1eadt li\u1ec7u gi\u00e3n n\u1edf kh\u00e1c nhau khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a n\u00f3 trong k\u1ef9 thu\u1eadt.\" \/>\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\/su-khong-phu-hop-trong-gian-no-nhiet-cua-cac-vat-lieu\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"S\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p trong gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u\" \/>\n<meta property=\"og:description\" content=\"S\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p trong gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u: T\u00ecm hi\u1ec3u t\u1ea1i sao c\u00e1c v\u1eadt li\u1ec7u gi\u00e3n n\u1edf kh\u00e1c nhau khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a n\u00f3 trong k\u1ef9 thu\u1eadt.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermal-engineering.org\/vi\/su-khong-phu-hop-trong-gian-no-nhiet-cua-cac-vat-lieu\/\" \/>\n<meta property=\"og:site_name\" content=\"Thermal Engineering\" \/>\n<meta property=\"article:published_time\" content=\"2024-08-03T07:22:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/su_khong_phu_hop_trong_gian_no_nhiet_cua_cac_vat_lieu.png\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\">\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\">\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\">\n\t<meta name=\"twitter:data2\" content=\"4 minutes\">\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\",\"url\":\"https:\/\/www.thermal-engineering.org\/fr\/\",\"name\":\"Thermal Engineering\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/www.thermal-engineering.org\/fr\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"vi-VN\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/su-khong-phu-hop-trong-gian-no-nhiet-cua-cac-vat-lieu\/#primaryimage\",\"inLanguage\":\"vi-VN\",\"url\":\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/su_khong_phu_hop_trong_gian_no_nhiet_cua_cac_vat_lieu.png\",\"width\":1000,\"height\":1000,\"caption\":\"S\\u1ef1 kh\\u00f4ng ph\\u00f9 h\\u1ee3p trong gi\\u00e3n n\\u1edf nhi\\u1ec7t c\\u1ee7a c\\u00e1c v\\u1eadt li\\u1ec7u\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/su-khong-phu-hop-trong-gian-no-nhiet-cua-cac-vat-lieu\/#webpage\",\"url\":\"https:\/\/www.thermal-engineering.org\/vi\/su-khong-phu-hop-trong-gian-no-nhiet-cua-cac-vat-lieu\/\",\"name\":\"S\\u1ef1 kh\\u00f4ng ph\\u00f9 h\\u1ee3p trong gi\\u00e3n n\\u1edf nhi\\u1ec7t c\\u1ee7a c\\u00e1c v\\u1eadt li\\u1ec7u\",\"isPartOf\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/su-khong-phu-hop-trong-gian-no-nhiet-cua-cac-vat-lieu\/#primaryimage\"},\"datePublished\":\"2024-08-03T07:22:43+00:00\",\"dateModified\":\"2024-08-03T07:22:43+00:00\",\"author\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"S\\u1ef1 kh\\u00f4ng ph\\u00f9 h\\u1ee3p trong gi\\u00e3n n\\u1edf nhi\\u1ec7t c\\u1ee7a c\\u00e1c v\\u1eadt li\\u1ec7u: T\\u00ecm hi\\u1ec3u t\\u1ea1i sao c\\u00e1c v\\u1eadt li\\u1ec7u gi\\u00e3n n\\u1edf kh\\u00e1c nhau khi nhi\\u1ec7t \\u0111\\u1ed9 thay \\u0111\\u1ed5i v\\u00e0 \\u1ea3nh h\\u01b0\\u1edfng c\\u1ee7a n\\u00f3 trong k\\u1ef9 thu\\u1eadt.\",\"inLanguage\":\"vi-VN\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.thermal-engineering.org\/vi\/su-khong-phu-hop-trong-gian-no-nhiet-cua-cac-vat-lieu\/\"]}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\",\"name\":\"Nick Connor\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#personlogo\",\"inLanguage\":\"vi-VN\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/84c0dec310b44b65da29dc9df6925239?s=96&d=mm&r=g\",\"caption\":\"Nick Connor\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","_links":{"self":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts\/704309"}],"collection":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/comments?post=704309"}],"version-history":[{"count":0,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts\/704309\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/media?parent=704309"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/categories?post=704309"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/tags?post=704309"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}