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Un tubo de 5 c m de di metro interno y 1 8 0 c m de largo se va a emplear como una columna

Un tubo de 5cm de dimetro interno y 180cm de largo se va a emplear como una columna de pared mojada. Un flujo volumtrico Q=30cm3s de agua pura se distribuye uniformemente alrededor del permetro del extremo superior del tubo y desciende a lo largo de ste como una pelcula laminar uniforme. Por el espacio vaco del tubo fluye una corriente de CO2 puro, el cual se absorbe en el agua.
(a) Dibuja el diagrama del sistema, seala claramente el elemento diferencial de volumen y los componentes del balance diferencial del CO2. Define (no calcules todava) la velocidad promedio del agua que desciende en trminos del flujo volumtrico.
(b) Calcula la concentracin del CO2 en gcm3 al final del tubo y tasa de absorcin del CO2 en gh.
(c) Repite los clculos del inciso anterior, pero considerando que el mismo flujo volumtrico de agua se distribuye alrededor de 2 tubos idnticos de 5cm de dimetro interno y de 90cm de largo.
(d)Es la tasa de absorcin total calculada en (c) igual a la del inciso (b)? Si no son iguales, explica la diferencia.
Para una pelcula laminar descendente el nmero de Reynolds y el espesor de la pelcula se definen, respectivamente por
Re=4Qdt,=(3Qdt2g)13
donde dt es el dimetro del tubo, es la viscosidad es la densidad y g es la aceleracin de la gravedad. La viscosidad de la solucin es de 1.0gcm*s, la densidad es 1.0gcm3 y la solubilidad del CO2 en agua es de 310-4gCO2cm3 de solucin.
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