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Se bombea benceno a 100 (37,8 ) a travs del sistema de la figura 8,5 a razn de 40 gal/min (9,09|/). El depsito est en

Se bombea benceno a 100 (37,8 ) a travs del sistema de la figura 8,5 a razn de 40 gal/min (9,09|/). El depsito est en presin atmosfrica. La presin manomtrica al final de la descarga. lnea es de 50 lbf/in.2 (345 kN/m2). La descarga es de 10 pies y la bomba la succin est 4 pies por encima del nivel del depsito. La lnea de descarga es 1.5- pulg. Tubera cdula 40. Se sabe que la friccin en la lnea de succin es 0,5 lbf/in.2 (3,45 kN/m2), y que en la lnea de descarga es de 5,5 lbf/in.2 (37,9 kN/m2). La eficiencia mecnica de la bomba es de 0,60 (60 por ciento). La densidad del benceno es 54 lb/ft3 (865 kg/|), y su la presin de vapor a 100 (37,8 ) es de 3,8 lbf/in.2 (26,2 kN/m2).

Calcular (a) la cabeza desarrollada de la bomba (b) la potencia de entrada total (c) Si el fabricante de la bomba especifica un NPSHR requerido de 10 pies (3,05 m), ser adecuada la bomba para este servicio?

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