{"id":681474,"date":"2024-08-08T11:43:56","date_gmt":"2024-08-08T10:43:56","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=681474"},"modified":"2024-08-08T11:43:56","modified_gmt":"2024-08-08T10:43:56","slug":"5-loai-vat-lieu-thay-doi-pha-danh-cho-luu-tru-nhiet","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/5-loai-vat-lieu-thay-doi-pha-danh-cho-luu-tru-nhiet\/","title":{"rendered":"5 Lo\u1ea1i V\u1eadt Li\u1ec7u Thay \u0110\u1ed5i Pha D\u00e0nh Cho L\u01b0u Tr\u1eef Nhi\u1ec7t"},"content":{"rendered":"

5 Lo\u1ea1i V\u1eadt Li\u1ec7u Thay \u0110\u1ed5i Pha D\u00e0nh Cho L\u01b0u Tr\u1eef Nhi\u1ec7t: Gi\u1edbi thi\u1ec7u v\u00e0 ph\u00e2n lo\u1ea1i c\u00e1c v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n pha d\u00f9ng \u0111\u1ec3 l\u01b0u tr\u1eef v\u00e0 gi\u1ea3i ph\u00f3ng nhi\u1ec7t hi\u1ec7u qu\u1ea3.<\/p>\n

\"5<\/p>\n

5 Lo\u1ea1i V\u1eadt Li\u1ec7u Thay \u0110\u1ed5i Pha D\u00e0nh Cho L\u01b0u Tr\u1eef Nhi\u1ec7t<\/h2>\n

V\u1eadt li\u1ec7u thay \u0111\u1ed5i pha (PCM – Phase Change Material) l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn v\u00e0 hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 l\u01b0u tr\u1eef nhi\u1ec7t. PCM h\u1ea5p th\u1ee5 ho\u1eb7c gi\u1ea3i ph\u00f3ng nhi\u1ec7t khi ch\u00fang chuy\u1ec3n t\u1eeb tr\u1ea1ng th\u00e1i r\u1eafn sang l\u1ecfng ho\u1eb7c ng\u01b0\u1ee3c l\u1ea1i. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 n\u0103m lo\u1ea1i v\u1eadt li\u1ec7u thay \u0111\u1ed5i pha ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong l\u01b0u tr\u1eef nhi\u1ec7t.<\/p>\n

<\/p>\n

  • Paraffin Wax<\/b><\/li>\n

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

    Paraffin wax l\u00e0 m\u1ed9t ch\u1ea5t h\u1eefu c\u01a1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn trong h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef nhi\u1ec7t. N\u00f3 c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m nh\u01b0 nhi\u1ec7t dung cao, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc v\u00e0 an to\u00e0n khi s\u1eed d\u1ee5ng. Paraffin wax c\u0169ng d\u1ec5 d\u00e0ng ch\u1ebf t\u1ea1o v\u00e0 \u1ee9ng d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng nh\u1ecf v\u00e0 l\u1edbn.<\/p>\n

    <\/p>\n

  • Mu\u1ed1i Hydrat<\/b><\/li>\n

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

    Mu\u1ed1i hydrat l\u00e0 m\u1ed9t nh\u00f3m PCM v\u00f4 c\u01a1, c\u00f3 kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng l\u1edbn v\u00e0 gi\u00e1 th\u00e0nh th\u1ea5p. Nh\u1eefng lo\u1ea1i mu\u1ed1i n\u00e0y c\u00f3 \u0111i\u1ec3m ri\u00eang bi\u1ec7t l\u00e0 chuy\u1ec3n pha \u1edf nhi\u1ec7t \u0111\u1ed9 kh\u00e1 \u1ed5n \u0111\u1ecbnh. Tuy nhi\u00ean, m\u1ed9t nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a mu\u1ed1i hydrat l\u00e0 d\u1ec5 b\u1ecb ph\u00e2n h\u1ee7y v\u00e0 t\u1ea1o th\u00e0nh c\u00e1c l\u1edbp khi qua nhi\u1ec1u chu k\u1ef3 n\u00f3ng l\u1ea1nh.<\/p>\n

    <\/p>\n

  • Polyethylene Glycol (PEG)<\/b><\/li>\n

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

    Polyethylene glycol l\u00e0 m\u1ed9t lo\u1ea1i polymer c\u00f3 chu\u1ed7i ng\u1eafn \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u00e0 khoa h\u1ecdc xem l\u00e0 v\u1eadt li\u1ec7u \u0111\u1ea7y h\u1ee9a h\u1eb9n trong l\u01b0u tr\u1eef nhi\u1ec7t. PEG c\u00f3 \u0111i\u1ec3m n\u00f3ng ch\u1ea3y \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c, d\u1ec5 d\u00e0ng t\u00edch h\u1ee3p v\u00e0o nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau t\u1eeb c\u00f4ng nghi\u1ec7p \u0111\u1ebfn d\u00e2n d\u1ee5ng.<\/p>\n

    <\/p>\n

  • Acids B\u00e9o<\/b><\/li>\n

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

    Acids b\u00e9o nh\u01b0 lauric acid v\u00e0 palmitic acid l\u00e0 c\u00e1c PCM t\u1ef1 nhi\u00ean c\u00f3 nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y th\u1ea5p v\u00e0 an to\u00e0n. Ch\u00fang c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 d\u1ec5 d\u00e0ng t\u00e1i ch\u1ebf v\u00e0 \u1ed5n \u0111\u1ecbnh, nh\u01b0ng gi\u00e1 th\u00e0nh c\u00f3 th\u1ec3 cao h\u01a1n so v\u1edbi c\u00e1c lo\u1ea1i PCM kh\u00e1c.<\/p>\n

    <\/p>\n

  • Kim Lo\u1ea1i v\u00e0 H\u1ee3p Kim<\/b><\/li>\n

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

    C\u00e1c kim lo\u1ea1i v\u00e0 h\u1ee3p kim nh\u01b0 eutectic alloys v\u00e0 gallium c\u0169ng l\u00e0 c\u00e1c PCM ti\u1ec1m n\u0103ng. Ch\u00fang c\u00f3 kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef nhi\u1ec7t l\u1edbn, kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t cao v\u00e0 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao. Tuy nhi\u00ean, gi\u00e1 th\u00e0nh c\u1ee7a ch\u00fang kh\u00e1 cao v\u00e0 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt ch\u1ebf t\u1ea1o ph\u1ee9c t\u1ea1p h\u01a1n.<\/p>\n

    Nh\u1eefng lo\u1ea1i v\u1eadt li\u1ec7u thay \u0111\u1ed5i pha n\u00eau tr\u00ean \u0111\u1ec1u c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang, tuy nhi\u00ean ch\u00fang \u0111\u1ec1u \u0111\u00f3ng g\u00f3p quan tr\u1ecdng trong vi\u1ec7c c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 l\u01b0u tr\u1eef v\u00e0 s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng trong c\u00e1c h\u1ec7 th\u1ed1ng nhi\u1ec7t.<\/p>\n","protected":false},"excerpt":{"rendered":"

    5 Lo\u1ea1i V\u1eadt Li\u1ec7u Thay \u0110\u1ed5i Pha D\u00e0nh Cho L\u01b0u Tr\u1eef Nhi\u1ec7t: Gi\u1edbi thi\u1ec7u v\u00e0 ph\u00e2n lo\u1ea1i c\u00e1c v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n pha d\u00f9ng \u0111\u1ec3 l\u01b0u tr\u1eef v\u00e0 gi\u1ea3i ph\u00f3ng nhi\u1ec7t hi\u1ec7u qu\u1ea3.<\/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":"\n5 Lo\u1ea1i V\u1eadt Li\u1ec7u Thay \u0110\u1ed5i Pha D\u00e0nh Cho L\u01b0u Tr\u1eef Nhi\u1ec7t<\/title>\n<meta name=\"description\" content=\"5 Lo\u1ea1i V\u1eadt Li\u1ec7u Thay \u0110\u1ed5i Pha D\u00e0nh Cho L\u01b0u Tr\u1eef Nhi\u1ec7t: Gi\u1edbi thi\u1ec7u v\u00e0 ph\u00e2n lo\u1ea1i c\u00e1c v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n pha d\u00f9ng \u0111\u1ec3 l\u01b0u tr\u1eef v\u00e0 gi\u1ea3i ph\u00f3ng nhi\u1ec7t hi\u1ec7u qu\u1ea3.\" 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