Tengo una carga que consiste en cajas de cartón de 580 mmx500xmm 400 mm(Largo, Ancho, Alto) que debo unitarizar en Paleta de 1200x1000x150 mm. , el contenedor es de 40 pies, por lo que la altura interna de la puerta es 2,28 metros 1. ¿Cuántas cajas van en la base de la paleta?
2. ¿Cuántas cajas van en cada columna o pisos? )
3. ¿Cuántas cajas caben en cada paleta?

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.