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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 />

CONDENSAREA VAPORILOR<br />

o Poziţia verticală sau orizontală a ţevilor<br />

pe care <strong>de</strong>curge con<strong>de</strong>nsarea.<br />

<strong>–</strong> Conform ecuaţiilor (199) şi (206), raportul<br />

dintre coeficientul <strong>de</strong> <strong>transfer</strong> α pentru o<br />

ţeavă verticală <strong>de</strong> înălţime H şi coeficientul <strong>de</strong><br />

<strong>transfer</strong> α 0 pentru o ţeavă verticală <strong>de</strong><br />

diametru exterior d este:<br />

α 1 d<br />

= ⋅ 4<br />

(209)<br />

0,<br />

725 H<br />

α<br />

0<br />

<strong>LUCIAN</strong> <strong>GAVRILĂ</strong> <strong>–</strong> <strong>Fenomene</strong> <strong>de</strong> <strong>transfer</strong> <strong>II</strong> 57

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