SE DEBE CONTRUIR UNA PARED QUE TENDRÁ 4 METROS DE LARGO POR 3 METROS DE ALTO. SI SE UTILIZARAN LADRILLOS HUECOS Y TENIENDO EN CUENTA QUE ENTRE

LADRILLO Y LADRILLO SE DEBE COLOCAR ALREDEDOR DE DOS CENTÍMETROS DE MEZCLA

PARA UNIRLOS….. ¿ CUÁNTOS LADRILLOS SERÁN NECESARIOS APROXIMADAMENTE PARA

CONTRUIR LA PARED?.

(Ladrillo Hueco: 12cm X 18cm X 33cm)

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.