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P6rdida con ais<strong>la</strong>wte:<br />

Para el cAlculo de <strong>la</strong> p*rdida de calor con ais<strong>la</strong>nte se<br />

determina el radio exterior del tuba a partir do <strong>la</strong> Tab<strong>la</strong> 3-5.<br />

Donde:<br />

Oc (TI - Ta) x A x H<br />

-s in n m<br />

K r I + I<br />

A - Area exterior con almiante<br />

Ti w Temperatura do Ia tuberia<br />

Ta Temperatura dmbiento<br />

r - Radio externo con nis<strong>la</strong>nttb<br />

rl Radio externo do lie tube'rta<br />

K Conductividad del ais<strong>la</strong>nte<br />

f w Coeficiente de conductivldad do pelicu<strong>la</strong> (Ver<br />

r ibhI 3-6)<br />

H a N6mero de horas de operac16n<br />

f<br />

- 153 ­

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