{"id":697267,"date":"2024-09-14T18:26:12","date_gmt":"2024-09-14T17:26:12","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=697267"},"modified":"2024-09-14T18:26:12","modified_gmt":"2024-09-14T17:26:12","slug":"phan-tich-nhiet-dong-hoc-cua-pin-nhien-lieu","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/phan-tich-nhiet-dong-hoc-cua-pin-nhien-lieu\/","title":{"rendered":"Ph\u00e2n t\u00edch nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a pin nhi\u00ean li\u1ec7u"},"content":{"rendered":"<p class=\"sidekick\">Ph\u00e2n t\u00edch nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a pin nhi\u00ean li\u1ec7u: T\u00ecm hi\u1ec3u c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a pin nhi\u00ean li\u1ec7u trong vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng hi\u1ec7u qu\u1ea3.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/phan_tich_nhiet_dong_hoc_cua_pin_nhien_lieu.png\" alt=\"Ph\u00e2n t\u00edch nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a pin nhi\u00ean li\u1ec7u\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Ph\u00e2n T\u00edch Nhi\u1ec7t \u0110\u1ed9ng H\u1ecdc C\u1ee7a Pin Nhi\u00ean Li\u1ec7u<\/h2>\n<p>Pin nhi\u00ean li\u1ec7u l\u00e0 thi\u1ebft b\u1ecb chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng h\u00f3a h\u1ecdc tr\u1ef1c ti\u1ebfp th\u00e0nh \u0111i\u1ec7n n\u0103ng th\u00f4ng qua c\u00e1c ph\u1ea3n \u1ee9ng \u0111i\u1ec7n h\u00f3a. Ph\u00e2n t\u00edch nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a pin nhi\u00ean li\u1ec7u gi\u00fap ch\u00fang ta hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 qu\u00e1 tr\u00ecnh n\u00e0y v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n<h2>Ngu\u1ed3n N\u0103ng L\u01b0\u1ee3ng v\u00e0 Nguy\u00ean L\u00fd Ho\u1ea1t \u0110\u1ed9ng<\/h2>\n<p>Pin nhi\u00ean li\u1ec7u th\u01b0\u1eddng s\u1eed d\u1ee5ng hydrogen (H<sub>2<\/sub>) v\u00e0 oxygen (O<sub>2<\/sub>) l\u00e0 ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng. Ph\u1ea3n \u1ee9ng ch\u00ednh trong pin nhi\u00ean li\u1ec7u l\u00e0:<\/p>\n<p style=\"text-align: center;\">2H<sub>2<\/sub> + O<sub>2<\/sub> \u2192 2H<sub>2<\/sub>O<\/p>\n<p>Ph\u1ea3n \u1ee9ng n\u00e0y t\u1ea1o ra n\u01b0\u1edbc v\u00e0 gi\u1ea3i ph\u00f3ng n\u0103ng l\u01b0\u1ee3ng, \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n d\u01b0\u1edbi d\u1ea1ng \u0111i\u1ec7n n\u0103ng v\u00e0 nhi\u1ec7t n\u0103ng. Qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra qua hai \u0111i\u1ec7n c\u1ef1c: anode v\u00e0 cathode.<\/p>\n<h2>Nhi\u1ec7t \u0110\u1ed9ng H\u1ecdc C\u01a1 B\u1ea3n<\/h2>\n<p>Trong ph\u00e2n t\u00edch nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a pin nhi\u00ean li\u1ec7u, c\u00f3 ba y\u1ebfu t\u1ed1 ch\u00ednh c\u1ea7n xem x\u00e9t:<\/p>\n<p><u1><\/p>\n<li>N\u0103ng l\u01b0\u1ee3ng Gibbs t\u1ef1 do (G)<\/li>\n<li>Enthalpy (H)<\/li>\n<li>Nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t<\/li>\n<p><\/u1><\/p>\n<h2>N\u0103ng L\u01b0\u1ee3ng Gibbs T\u1ef1 Do<\/h2>\n<p>N\u0103ng l\u01b0\u1ee3ng Gibbs t\u1ef1 do x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng sinh c\u00f4ng c\u1ee7a ph\u1ea3n \u1ee9ng. C\u00f4ng th\u1ee9c t\u00ednh n\u0103ng l\u01b0\u1ee3ng Gibbs t\u1ef1 do l\u00e0:<\/p>\n<p style=\"text-align: center;\">G = H &#8211; TS<\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<p><u1><\/p>\n<li>G: N\u0103ng l\u01b0\u1ee3ng Gibbs t\u1ef1 do<\/li>\n<li>H: Enthalpy<\/li>\n<li>T: Nhi\u1ec7t \u0111\u1ed9 (Kelvin)<\/li>\n<li>S: Entropy<\/li>\n<p><\/u1><\/p>\n<p>N\u0103ng l\u01b0\u1ee3ng Gibbs t\u1ef1 do l\u00e0 ch\u1ec9 s\u1ed1 quan tr\u1ecdng gi\u00fap x\u00e1c \u0111\u1ecbnh hi\u1ec7u su\u1ea5t l\u00fd thuy\u1ebft c\u1ee7a pin nhi\u00ean li\u1ec7u.<\/p>\n<h2>Enthalpy v\u00e0 Nhi\u1ec7t \u0110\u1ed9<\/h2>\n<p>Enthalpy (H) l\u00e0 t\u1ed5ng n\u0103ng l\u01b0\u1ee3ng n\u1ed9i t\u1ea1i c\u1ee7a h\u1ec7 th\u1ed1ng, bao g\u1ed3m c\u1ea3 nhi\u1ec7t l\u01b0\u1ee3ng sinh ra trong qu\u00e1 tr\u00ecnh ph\u1ea3n \u1ee9ng. Enthalpy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00f4ng th\u1ee9c:<\/p>\n<p style=\"text-align: center;\">H<sub>reaction<\/sub> = H<sub>products<\/sub> &#8211; H<sub>reactants<\/sub><\/p>\n<p>Th\u1ef1c t\u1ebf, nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn gi\u00e1 tr\u1ecb c\u1ee7a enthalpy v\u00e0 entropy, do \u0111\u00f3 vi\u1ec7c ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh pin nhi\u00ean li\u1ec7u r\u1ea5t quan tr\u1ecdng.<\/p>\n<h2>Hi\u1ec7u Su\u1ea5t C\u1ee7a Pin Nhi\u00ean Li\u1ec7u<\/h2>\n<p>Hi\u1ec7u su\u1ea5t l\u00fd thuy\u1ebft c\u1ee7a pin nhi\u00ean li\u1ec7u \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi t\u1ef7 l\u1ec7 gi\u1eefa n\u0103ng l\u01b0\u1ee3ng Gibbs t\u1ef1 do v\u00e0 enthalpy:<\/p>\n<p style=\"text-align: center;\">Efficiency (\u03b7) = \\(\\frac{G}{H}\\)<\/p>\n<p>Th\u1ef1c t\u1ebf, hi\u1ec7u su\u1ea5t th\u1ef1c t\u1ebf c\u1ee7a pin nhi\u00ean li\u1ec7u th\u01b0\u1eddng th\u1ea5p h\u01a1n do t\u1ed5n th\u1ea5t nhi\u1ec7t v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c nh\u01b0 \u0111i\u1ec7n tr\u1edf n\u1ed9i t\u1ea1i.<\/p>\n<h2>K\u1ebft Lu\u1eadn<\/h2>\n<p>Ph\u00e2n t\u00edch nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a pin nhi\u00ean li\u1ec7u cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 c\u00e1ch chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng h\u00f3a h\u1ecdc th\u00e0nh \u0111i\u1ec7n n\u0103ng v\u00e0 nhi\u1ec7t n\u0103ng. B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 n\u0103ng l\u01b0\u1ee3ng Gibbs t\u1ef1 do, enthalpy v\u00e0 nhi\u1ec7t \u0111\u1ed9, ch\u00fang ta c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a pin nhi\u00ean li\u1ec7u trong th\u1ef1c t\u1ebf.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ph\u00e2n t\u00edch nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc c\u1ee7a pin nhi\u00ean li\u1ec7u: T\u00ecm hi\u1ec3u c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a pin nhi\u00ean li\u1ec7u trong vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng 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":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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