Question

In: Other

Air at 80oC flows through a packed bed of cylinders with effective diameter of 0.015 m...

Air at 80oC flows through a packed bed of cylinders with effective diameter of 0.015 m and
length the same as the diameter. The bed void fraction is 0.40 and the length of the packed bed is
2
2 m. The air enters the bed at 1.3 atm abs at the rate of 2.45 kg/m .s. Calculate the pressure drop
of air in the bed

Solutions

Expert Solution


Related Solutions

Air flows through a pipe that has a length of 45 m with an inside diameter...
Air flows through a pipe that has a length of 45 m with an inside diameter of 0.025 m. The Mach number of the flow exiting the pipe is 0.26, with a static pressure of 1 atmosphere and a temperature of 300 K. If the friction factor is assumed constant at 0.007, calculate the Mach number, static pressure, static temperature and total pressure at the entrance.
Air flows through a 0.25-m-diameter duct. At the inlet the velocity is 300 m/s, and the...
Air flows through a 0.25-m-diameter duct. At the inlet the velocity is 300 m/s, and the stagnation temperature is 90°C. If the Mach number at the exit is 0.3, determine the direction and the rate of heat transfer. For the same conditions at the inlet, determine the amount of heat that must be transferred to the system if the flow is to be sonic at the exit of the duct.
A packed bed reactor is filled with catalyst material with a diameter of 1.5 mm. The...
A packed bed reactor is filled with catalyst material with a diameter of 1.5 mm. The length of the reactor is 80 cm and the catalyst has a porosity of 0.45. The superficial mass velocity of the inlet gas is 7.5 kg/m2-s with a viscosity of 1.55x10-5 kg/m-s and a density of 2.8 kg/m3. The inlet pressure is 300 kPa. Find the pressure, P, at the end (the exit) of the PBR.
Air flows down a pipe with a diameter of 0.15 m. At the inlet to the...
Air flows down a pipe with a diameter of 0.15 m. At the inlet to the pipe, the Mach number is 0.1, the pressure is 70 kPa, and the temperature is 35°C. If the flow can be assumed to be adiabatic and if the mean friction factor is 0.005, determine the length of the pipe if the Mach number at the exit is 0.6. Also, find the pressure and temperature at the exit to the pipe.
A packed bed of uniform spherical particles of diameter, d= 2.5 mm, density ρs= 4000 kg/m3...
A packed bed of uniform spherical particles of diameter, d= 2.5 mm, density ρs= 4000 kg/m3 , and voidage e= 0.45 is fluidised by means of a liquid of viscosity μ= 1 mN s/m2 and density ρ= 900 kg/m3 . (a) Starting from Carman’s and Ergun’s equations reported in the attached equations sheet, derive the corresponding expressions for the minimum fluidising velocity, umf, for both equations and explain their meaning.
Pure water at 26.1 degres celcius flows at the rate of 5.514x10^-7 m^3/s through a packed...
Pure water at 26.1 degres celcius flows at the rate of 5.514x10^-7 m^3/s through a packed bed of benzoic acid spheres having a diameter of 6.375 mm. The total surface area of the spheres in the bed s 0.01198m^2 and the void fraction is 0.436. The tower diameter is 0.0667m. The solubility of benzoic acid is 2.9488x10^-2 kg mol/m^3. a. What is the mass tranfer coefficient? b. What is the outlet concentration of benzoic acid in the water?
Solid particles of density 2500 kgm-3 were packed into a fluidized bed reactor of 2 m...
Solid particles of density 2500 kgm-3 were packed into a fluidized bed reactor of 2 m in height and 0.04 m2 in cross-sectional area. The mass and height of the packed bed are 45 kg and 1 m, respectively. The surface-volume mean diameter of the particles is 1 mm. (a) Determine the porosity of the packed bed. (b) Determine the pressure drop across the bed when a liquid of density 800 kgm-3 and viscosity of 0.002 Pa s flows through...
A cylindrical tank with inner diameter 2.0 m is designed to operate as a fluidized bed...
A cylindrical tank with inner diameter 2.0 m is designed to operate as a fluidized bed reactor for a heterogeneous catalytic reaction. The tank is loaded with a random packing of cubic particles to a height of 4.0 m with voidage 0.4 before the fluidization process. The density and length of each side of the cubic particles are 2600 kg m-3 and 1.0 cm respectively. During operation, a liquid reactant with density 1000 kg m-3 and viscosity 1.0 x 10-3...
Air at 25°C flows over a 10-mm-diameter sphere with a velocity of 20 m/s, while the...
Air at 25°C flows over a 10-mm-diameter sphere with a velocity of 20 m/s, while the surface of the sphere is maintained at 75°C. What is the rate of heat transfer from the sphere? q = ___ W ? Please provide correct final answer for guaranteed thumbs up rating !
Air flows through a constant area duct. The pressure and temperature of the air at the...
Air flows through a constant area duct. The pressure and temperature of the air at the inlet to the duct are P1 = 100 kPa absolute, and T1 = 298 K, respectively. Inlet Mach number is M1 = 0.1. Heat is transferred to the air as it flows through the duct and as a result the Mach number at the exit increases. Write a Matlab code and plot the following: a) Find the pressure and temperature at the exit, while...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT