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LUCIAN GAVRILĂ – Fenomene de transfer II - Cadre Didactice

LUCIAN GAVRILĂ – Fenomene de transfer II - Cadre Didactice

LUCIAN GAVRILĂ – Fenomene de transfer II - Cadre Didactice

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3/14/2003<br />

Transfer global <strong>de</strong> căldură<br />

direct între două flui<strong>de</strong><br />

oSuprafaţa <strong>de</strong> contact lichid - gaz (lichid -<br />

vapori) = factorul <strong>de</strong>terminant în <strong>transfer</strong>ul<br />

<strong>de</strong> căldură:<br />

<strong>–</strong> este cu atât mai mare cu cât picăturile<br />

pulverizate sunt mai mici<br />

<strong>–</strong> cu cât diametrul picăturilor este mai redus, se<br />

micşorează viteza <strong>de</strong> variaţie a temperaturii<br />

<strong>LUCIAN</strong> <strong>GAVRILĂ</strong> <strong>–</strong> <strong>Fenomene</strong> <strong>de</strong> <strong>transfer</strong> <strong>II</strong> 81

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