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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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3/9/2003<br />

FIERBEREA LICHIDELOR<br />

oDpdvfizic, fierberea =procesul <strong>de</strong><br />

transformare a unui lichid în vapori,<br />

procesul <strong>de</strong>sfăşurându-se în toată masa<br />

lichidului, cu formare <strong>de</strong> bule <strong>de</strong> vapori.<br />

o Fierberea = proces endoterm care <strong>de</strong>curge<br />

în condiţii izobar <strong>–</strong> izoterme (P, T = ct.)<br />

o Cantitatea <strong>de</strong> căldură necesară pentru<br />

fierberea a 1 kg <strong>de</strong> lichid = căldură<br />

latentă <strong>de</strong> vaporizare.<br />

<strong>LUCIAN</strong> <strong>GAVRILĂ</strong> <strong>–</strong> <strong>Fenomene</strong> <strong>de</strong> <strong>transfer</strong> <strong>II</strong> 3

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