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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 />

Con<strong>de</strong>nsarea peliculară pe suprafeţe verticale<br />

o Fie un perete răcit, vertical, în lungul căruia se<br />

formează un strat <strong>de</strong> con<strong>de</strong>nsat.<br />

o Curgerea <strong>de</strong>scen<strong>de</strong>ntă a stratului face ca<br />

grosimea δ a acestuia să fie crescătoare pe<br />

lungimea peretelui.<br />

o La o distanţă oarecare x <strong>de</strong> marginea superioară a<br />

peretelui şi y <strong>de</strong> perete, se izolează un<br />

paralelipiped elementar <strong>de</strong> con<strong>de</strong>nsat, având<br />

dimensiunile dx, dy, 1 şi volumul dV = dxdy.<br />

<strong>LUCIAN</strong> <strong>GAVRILĂ</strong> <strong>–</strong> <strong>Fenomene</strong> <strong>de</strong> <strong>transfer</strong> <strong>II</strong> 21

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