Calculate the clean bed head loss for the given conditions: temperature = 10 °c, flow rate = 4 mm/s, media is sand with sphericity of 0.8, fixed bed porosity of 0.43 and total depth = 0.90 m. use kozeny equation, but check to ensure that the reynold’s number is acceptable. assume uniform porosity with depth (a good assumption) and thus, the depth of each layer is proportional to the weight fraction.

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

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.