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Fluye aire a 1 atm y 3 8 deg C a trav s de un banco de tubos con 4 0 0 tubos de

Fluye aire a 1 atm y 38\deg C a travs de un banco de tubos con 400 tubos de 1.25 cm de dimetro externo en arreglo escalonado con 20 filas (SL=3.75 cm y ST=2.5 cm). La velocidad del flujo de entrada es 9 m/s, la temperatura de la pared del tubo se mantiene constante a 20\deg C por una condensacin de vapor en el interior de los tubos. La longitud de los tubos es de 1.5 m.
Determine la temperatura de salida del aire a la salida del banco de tubos.
.Air flows at 1 atm and 38\deg C through a tube bank with 400 tubes of 1.25 cm external diameter in a staggered arrangement with 20 rows (SL=3.75 cm and ST=2.5 cm). The inlet flow speed is 9 m/s, the tube wall temperature is kept constant at 20\deg C by condensation of vapor inside the tubes. The length of the tubes is 1.5 m.
Determine the outlet temperature of the air at the outlet of the tube bank.
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