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QUESTION 2 Air at 25 C is flowing through a packed bed of cylinders having a...
2. Air flows at 400K through a packed bed of cylinders with a diameter of 0.01m...
2. Air flows at 400K through a packed bed of cylinders with a diameter of 0.01m and a length equal to the diameter. The vacuum fraction of the bed is 0.30 and the length of the packed bed is 3.50m. The air penetrates transversely into the bed at absolute 2.20atm at a speed of 2.45 kg / m2 * s. Calculate the air pressure drop in the bed, explaining why it is important to know the pressure drop in it.
Q2- Mercury at 26.5 °C is flowing through a packed bed of lead spheres having a...
Q2- Mercury at 26.5 °C is flowing through a packed bed of lead spheres having a diameter of 2.096 mm with a void fraction of 0.499. The supepficial velocity is 0.02198 m/s. The solubility of lead in mercury is 1.721 wt%, the Schuidt number is 124.1, the viscosity of the solution is 1.577 x 10 Pas, and the density is 19530 kg/m'. Load Pb (M.W=207.2) and Mercury Hg (M.W = 200.6) a. Predict the value of Jo. b. Predict the...
1. Gas flow through a fixed bed A regenerative heater is a device where “waste" energy...
1. Gas flow through a fixed bed A regenerative heater is a device where “waste" energy from a hot fluid is stored in some type of thermal storage medium before it is transmitted to a cold fluid. In this problem, you will analyze the flow of the cold fluid across a hot packed bed as it picks up the stored energy. This is a fluid flow problem, not a heat transfer problem. A packed bed of cubes (with side =0.6...
1. For water at 20 C flowing through a straight smooth pipe at 0.06 m/h, the...
1. For water at 20 C flowing through a straight smooth pipe at 0.06 m/h, the pipe diameter for which transition to turbulence will occur is approximately a. 1.0 cm b. 1.5 cm c.2.0 cm d. 2.5 cm e. 3.0 cm 2. Find the Reynold number, the roughness parameter, the friction factor f and the pressure drop for flow of water at 20 C through a 5 cm diameter pipe of roughness height E=0.5 mm if the flow rate is...
A gas is separated from the air using an absorption column, which is randomly packed with...
A gas is separated from the air using an absorption column, which is randomly packed with 25mm metal Pall rings. Pure liquid solvent is used to reduce the mole fraction of gas A in air from 0.05 to 0.005 at a constant pressure and temperature. Total molar flow rates of entering gas and liquid to the column are 120 kmol/h and 180 kmol/h, respectively. The equilibrium relationship at operating conditions is y∗ = 1.2 x and the gas side pressure...
A gas is separated from the air using an absorption column, which is randomly packed with...
A gas is separated from the air using an absorption column, which is randomly packed with 25mm metal Pall rings. Pure liquid solvent is used to reduce the mole fraction of gas A in air from 0.05 to 0.005 at a constant pressure and temperature. Total molar flow rates of entering gas and liquid to the column are 120 kmol/h and 180 kmol/h, respectively. The equilibrium relationship at operating conditions is !∗ = 1.2 ' and the gas side pressure...
Question 10,000 kg of sand with a mesh size of 0.2 mm are fluidized at 300°C...
Question 10,000 kg of sand with a mesh size of 0.2 mm are fluidized at 300°C and 10 atm pressure, in a cylindrical column of 1 m diameter. Given that the minimal porosity for fluidization is 0.5, and R = 0.082 atm.m²/kmol.K, calculate: (a) The minimal height of fluidized bed, if the density of the particles is 3000 kg/m². (b) Pressure drop experienced by air when passing through the sand bed. (c) Minimal fluidization velocity, if the viscosity of the...
Question #1. Ambient temperature water (20 °C) is flowing through the horizontal piping system shown below...
Question #1. Ambient temperature water (20 °C) is flowing through the horizontal piping system shown below (not drawn to scale). There is a leak occurring in the reducing bushing that connects the larger (4" internal diameter) wrought iron pipe to the smaller (2" internal diameter) wrought iron pipe. Upstream from the leak on the larger pipe, two pressure gauges that are 15 m apart show a pressure difference of (P,-) = 2,445 kPa. Downstream from the leak on the smaller...
Question 2 (30 marks) (a) A fluid flowing into a nozzle with specific enthalpy of 2980...
Question 2 (30 marks) (a) A fluid flowing into a nozzle with specific enthalpy of 2980 kJ/kg and the velocity is 80 m/s. At the exit of the nozzle, the specific enthalpy of the fluid drops to 2670 kJ/kg. The nozzle orientation is horizontal and the heat loss is negligible. Given that the nozzle inlet area is 0.25 m2 and the specific volume of the fluid is 0.2 m2/kg, calculate the velocity of the fluid at exit, the mass flow...
F/Downloads/Tutorial20PR20%2020.pdf + to page Page Question 2 21. Use the law of conservation of mass to...
F/Downloads/Tutorial20PR20%2020.pdf + to page Page Question 2 21. Use the law of conservation of mass to prove the following for a fluid flowing from point 1 to point in a pipeline Where dida: (6) 2.2 Wwer at 320 K is pumped at a rate of 2.16 m'th through a 40 mm ID pipe. It goes through a length of 185 m bontonal pape. There are a number of control valves and fittings online that have a total equivalent length equal...
Q2- Mercury at 26.5 °C is flowing through a packed bed of lead spheres having a diameter of 2.096 mm with a void fraction of 0.499. The supepficial velocity is 0.02198 m/s. The solubility of lead in mercury is 1.721 wt%, the Schuidt number is 124.1, the viscosity of the solution is 1.577 x 10 Pas, and the density is 19530 kg/m'. Load Pb (M.W=207.2) and Mercury Hg (M.W = 200.6) a. Predict the value of Jo. b. Predict the...
1. Gas flow through a fixed bed A regenerative heater is a device where “waste" energy from a hot fluid is stored in some type of thermal storage medium before it is transmitted to a cold fluid. In this problem, you will analyze the flow of the cold fluid across a hot packed bed as it picks up the stored energy. This is a fluid flow problem, not a heat transfer problem. A packed bed of cubes (with side =0.6...
1. For water at 20 C flowing through a straight smooth pipe at 0.06 m/h, the pipe diameter for which transition to turbulence will occur is approximately a. 1.0 cm b. 1.5 cm c.2.0 cm d. 2.5 cm e. 3.0 cm 2. Find the Reynold number, the roughness parameter, the friction factor f and the pressure drop for flow of water at 20 C through a 5 cm diameter pipe of roughness height E=0.5 mm if the flow rate is...
Question 10,000 kg of sand with a mesh size of 0.2 mm are fluidized at 300°C and 10 atm pressure, in a cylindrical column of 1 m diameter. Given that the minimal porosity for fluidization is 0.5, and R = 0.082 atm.m²/kmol.K, calculate: (a) The minimal height of fluidized bed, if the density of the particles is 3000 kg/m². (b) Pressure drop experienced by air when passing through the sand bed. (c) Minimal fluidization velocity, if the viscosity of the...
Question #1. Ambient temperature water (20 °C) is flowing through the horizontal piping system shown below (not drawn to scale). There is a leak occurring in the reducing bushing that connects the larger (4" internal diameter) wrought iron pipe to the smaller (2" internal diameter) wrought iron pipe. Upstream from the leak on the larger pipe, two pressure gauges that are 15 m apart show a pressure difference of (P,-) = 2,445 kPa. Downstream from the leak on the smaller...
Question 2 (30 marks) (a) A fluid flowing into a nozzle with specific enthalpy of 2980 kJ/kg and the velocity is 80 m/s. At the exit of the nozzle, the specific enthalpy of the fluid drops to 2670 kJ/kg. The nozzle orientation is horizontal and the heat loss is negligible. Given that the nozzle inlet area is 0.25 m2 and the specific volume of the fluid is 0.2 m2/kg, calculate the velocity of the fluid at exit, the mass flow...
F/Downloads/Tutorial20PR20%2020.pdf + to page Page Question 2 21. Use the law of conservation of mass to prove the following for a fluid flowing from point 1 to point in a pipeline Where dida: (6) 2.2 Wwer at 320 K is pumped at a rate of 2.16 m'th through a 40 mm ID pipe. It goes through a length of 185 m bontonal pape. There are a number of control valves and fittings online that have a total equivalent length equal...
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