{"id":113485,"date":"2024-07-26T10:45:40","date_gmt":"2024-07-26T08:45:40","guid":{"rendered":"https:\/\/www.linseis.com\/termal-analiz-yoentemleri\/harman-yoentemi\/"},"modified":"2026-01-23T11:42:51","modified_gmt":"2026-01-23T10:42:51","slug":"harman-yoentemi","status":"publish","type":"page","link":"https:\/\/www.linseis.com\/tr\/termal-analiz-yoentemleri\/harman-yoentemi\/","title":{"rendered":"Harman y\u00f6ntemi"},"content":{"rendered":"\t\t
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\n\nHarman y\u00f6ntemi\n\n<\/b><\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Linseis<\/span><\/a><\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Harman y\u00f6ntemine g\u00f6re ZT kalite endeksinin do\u011frudan \u00f6l\u00e7\u00fcm\u00fc<\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Termoelektrik liyakat de\u011feri ZT<\/a><\/strong> ‘nin bireysel \u00f6l\u00e7\u00fcmlerinin sonu\u00e7lar\u0131ndan hesaplanabilir. elektriksel iletkenlik<\/a><\/strong>, the Seebeck katsay\u0131s\u0131<\/a><\/strong> ve termal iletkenlik<\/a><\/strong> do\u011frudan hesaplanabilir veya \u00f6l\u00e7\u00fclebilir. Do\u011frudan belirleme i\u00e7in yayg\u0131n bir y\u00f6ntem Harman y\u00f6ntemidir<\/strong>.<\/p>

\u00d6l\u00e7\u00fcm i\u00e7in, silindirik veya dikd\u00f6rtgen \u00e7ubuk \u015feklindeki bir termoelektrik numune her iki ucundan ve yan y\u00fczeylerden birinde iki kontakla elektriksel olarak temas ettirilir (bkz. a\u015fa\u011f\u0131daki \u015fekil a).<\/p><\/div><\/div><\/div><\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\"\"<\/p>

a) Harman y\u00f6ntemi kullan\u0131larak termoelektrik malzemelerin do\u011frudan ZT \u00f6l\u00e7\u00fcm\u00fc i\u00e7in \u015fematik kurulum. <\/em><\/p>

b) Uygulanan \u00f6l\u00e7\u00fcm ak\u0131m\u0131 I ile omik gerilim d\u00fc\u015f\u00fcm\u00fc UR ve olu\u015fan termal gerilim Uth ile bir Harman \u00f6l\u00e7\u00fcm\u00fcn\u00fcn \u00f6l\u00e7\u00fcm e\u011frisi.<\/em><\/p><\/div><\/div><\/div><\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\u00d6l\u00e7\u00fcm do\u011frulu\u011fu i\u00e7in, m\u00fcmk\u00fcn olan en iyi adyabatik ko\u015fullar\u0131 olu\u015fturmak, yani numune ile ortam aras\u0131ndaki \u0131s\u0131 al\u0131\u015fveri\u015fini en aza indirmek \u00e7ok \u00f6nemlidir.<\/p>

Bu nedenle, \u00f6l\u00e7\u00fcm genellikle vakum alt\u0131nda ger\u00e7ekle\u015fir ve numune ya serbest olarak saklan\u0131r ya da termostat kontroll\u00fc bir taban plakas\u0131 \u00fczerine sabitlenir.<\/p>

Buna ek olarak, numune ile \u00e7evre aras\u0131nda radyasyon yoluyla \u0131s\u0131 al\u0131\u015fveri\u015fini azaltmak i\u00e7in genellikle bir \u0131s\u0131 kalkan\u0131 kullan\u0131l\u0131r.<\/p><\/div><\/div><\/div><\/section>

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\u00d6l\u00e7\u00fcm, u\u00e7 y\u00fczeylerdeki kontaklar aras\u0131nda bir I0<\/sub> ak\u0131m\u0131 uygulanarak ba\u015flat\u0131l\u0131r, b\u00f6ylece \u00f6rnek ve elektrot aras\u0131ndaki bir ba\u011flant\u0131 \u0131s\u0131t\u0131l\u0131r ve di\u011feri Peltier etkisi nedeniyle so\u011futulur. Adyabatik s\u0131n\u0131r ko\u015fullar\u0131 daha sonra numune boyunca bir s\u0131cakl\u0131k gradyan\u0131na yol a\u00e7ar ve bu s\u0131cakl\u0131k gradyan\u0131n\u0131n boyutu, uygulanan ak\u0131ma ve numunenin termoelektrik \u00f6zelliklerine ba\u011fl\u0131d\u0131r. Numunenin yan y\u00fczeyindeki voltaj problar\u0131, hem uygulanan ak\u0131m nedeniyle voltaj d\u00fc\u015f\u00fc\u015f\u00fcn\u00fcn omik bile\u015fenini UR hem de s\u0131cakl\u0131k gradyan\u0131ndan kaynaklanan termal voltaj\u0131 Uth \u00f6l\u00e7mek i\u00e7in kullan\u0131l\u0131r (bkz. \u015eekil 1b). <\/p>

Omik bile\u015fen do\u011frudan ak\u0131m enjeksiyonundan sonra \u00f6l\u00e7\u00fcl\u00fcrken, termal gerilim kararl\u0131 durum son halinde belirlenir. ZT do\u011frudan iki gerilimin oran\u0131ndan belirlenebilir. <\/p><\/div><\/div><\/div><\/section><\/div><\/div><\/div><\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\"\"<\/p><\/div><\/div><\/div><\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\u00d6l\u00e7\u00fcm y\u00f6nteminin do\u011frulu\u011fu b\u00fcy\u00fck \u00f6l\u00e7\u00fcde adyabatik \u00f6l\u00e7\u00fcm ko\u015fullar\u0131na uyulmas\u0131na ve numune ile ak\u0131m elektrotlar\u0131 aras\u0131ndaki temas direncine ba\u011fl\u0131d\u0131r. Bu durum, Harman teknolojisine dayal\u0131 \u00f6l\u00e7\u00fcm d\u00fczene\u011finin maksimum \u00e7al\u0131\u015fma s\u0131cakl\u0131\u011f\u0131n\u0131 200\u00b0C ila 300\u00b0C ile s\u0131n\u0131rlamaktad\u0131r. <\/p><\/div><\/div><\/div><\/section><\/div><\/div><\/div><\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Hangi m\u00fclkler de\u011ferlendirilir?<\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Harman y\u00f6ntemi, termoelektrik liyakat de\u011feri ZT’nin do\u011frudan \u00f6l\u00e7\u00fcm\u00fc i\u00e7in kullan\u0131labilir. Bu do\u011frudan \u00f6l\u00e7\u00fcm, iyi deneysel ko\u015fullar alt\u0131nda ZT i\u00e7in hatan\u0131n en aza indirilmesini sa\u011flar. LSR-3<\/a><\/strong> ve LFA<\/a><\/strong> Bireysel \u00f6l\u00e7\u00fcmlerin hata \u00e7ubuklar\u0131 biriktik\u00e7e. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\"\"<\/p><\/div><\/div><\/div><\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Ayn\u0131 form\u00fcl, termal iletkenli\u011fin birle\u015fik bir Harman ve g\u00fc\u00e7 fakt\u00f6r\u00fc \u00f6l\u00e7\u00fcm\u00fcnden bir malzeme \u00f6zelli\u011fi olarak hesaplanabilece\u011fini de g\u00f6stermektedir. Bu, Linseis LSR-3 gibi standart bir cihazla termoelektrik numunelerin \u0131s\u0131 ta\u015f\u0131ma \u00f6zelliklerini \u00f6l\u00e7mek i\u00e7in basit ve uygun maliyetli bir \u00e7\u00f6z\u00fcm olabilir. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Harman y\u00f6ntemi Harman y\u00f6ntemine g\u00f6re ZT kalite endeksinin do\u011frudan \u00f6l\u00e7\u00fcm\u00fc Termoelektrik liyakat de\u011feri ZT ‘nin bireysel \u00f6l\u00e7\u00fcmlerinin sonu\u00e7lar\u0131ndan hesaplanabilir. elektriksel iletkenlik, the Seebeck katsay\u0131s\u0131 ve termal iletkenlik do\u011frudan hesaplanabilir veya \u00f6l\u00e7\u00fclebilir. Do\u011frudan belirleme i\u00e7in yayg\u0131n bir y\u00f6ntem Harman y\u00f6ntemidir. \u00d6l\u00e7\u00fcm i\u00e7in, silindirik veya dikd\u00f6rtgen \u00e7ubuk \u015feklindeki bir termoelektrik numune her iki ucundan ve yan y\u00fczeylerden […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":113451,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-113485","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/pages\/113485","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/comments?post=113485"}],"version-history":[{"count":0,"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/pages\/113485\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/pages\/113451"}],"wp:attachment":[{"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/media?parent=113485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}