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A catalytic reaction is being carried out in a packed bed in the annular space between...
11. A viscous liquid (p48 Pa.s, p-920 kg/m) lows through the annular space between two horizontal, fixed, concentric cylinders. If the radius of the inner cylinder is 3.81 em and the radius of the...
11. A viscous liquid (p48 Pa.s, p-920 kg/m) lows through the annular space between two horizontal, fixed, concentric cylinders. If the radius of the inner cylinder is 3.81 em and the radius of the outer cylinder is 6.35em, what is the pressure drop along the axis of the annulus per meter when the volume flowrate is 0.028 mls.
11. A viscous liquid (p48 Pa.s, p-920 kg/m) lows through the annular space between two horizontal, fixed, concentric cylinders. If the radius...
Heat Transfer -A wall 20 cm thick is to be constructed from material that has an...
Heat Transfer
-A wall 20 cm thick is to be constructed from material that has an average thermal conductivity of 2 W/m C. The wall is to be insulated with 5cm material having an average thermal conductivity of 0.5W/m C. Assuming that the inner and outer surface temperatures of the insulated wall are 200 and 20°C, calculate the heat transfer per unit area and the intermediate Temperature between the insulation and the wall.
Question 5 (8 Marks): The first order irreversible gas phase reaction a- A B is to be carried out in a packed bed react...
Question 5 (8 Marks): The first order irreversible gas phase reaction a- A B is to be carried out in a packed bed reactor with a 1,000 kg of reforming catalyst are packed. The entering pressure is 20 atm and the pressure at the exit of the reactor is 1.0 atm. Calculate the pressure drop parameter. b- Sketch one reactor that is normally used to maximize the selectivity Briefly describe the two terms in the Arrhenius equation C-
Question 5...
Consider a medical device where blood is circulated in the annular space between two coaxial cyli...
do
the second prob pic
Consider a medical device where blood is circulated in the annular space between two coaxial cylinders (Figure 1). The inner cylinder (radius cylinder (radius R) is rotating with constant anacibeNewtonian fluid (density o. are infinitely long, and that blood behaves as an tncompcessiole viscosity . Ignore the effect of gravity. whereas the outer velocity oAssume that the cylinders 1a. Write a conservation equations appropriate to determine the fluid velocity profile insido the annular gap, along...
7. (15 pts.) A gas-phase reaction (A+B-C+D) is carried out in a packed bed reactor. When the particle size was decr...
7. (15 pts.) A gas-phase reaction (A+B-C+D) is carried out in a packed bed reactor. When the particle size was decreased by 15 %, the conversion remained unchanged. When the particle size was decreased by 20%, the conversion decreased. When the original particle size was increased by 15 %, the conversion also decreased. In all cases, the temperature, the total catalyst weight, and all other conditions remained unchanged. Explain the observation.
7. (15 pts.) A gas-phase reaction (A+B-C+D) is carried...
QUESTION 3: 10 marks A liquid phase isomerization reaction A--> was carried out in a Packed-...
QUESTION 3: 10 marks A liquid phase isomerization reaction A--> was carried out in a Packed- 10 points bed Reactor with a solid catalyst. The reaction is very fast and the overall rate-controlling step is the external mass transfer between catalyst surface and the bulk fluid. Recently, market demand for the product has fallen by 50%, due to Covid-19 pandemic. Therefore, the management has decided to cut the production by half so that the raw material consumption can be reduced...
Two large parallel plates with surface conditions approximating those of a blackbody are maintained at 800°C...
Two large parallel plates with surface conditions approximating those of a blackbody are maintained at 800°C and 100°C, respectively. Determine the rate of heal transfer by radiation between the plates in Wim and the radiative heat transfer coefficient in W/m K ) 12 Write down the one-dimensional sent heal conduction equation for a plane wall with constant thermal conductivity and heat generation in its simplest form, and indicate what each variable represents 13 Write down the one-dimensional transient heat conduction...
A plane wall of thickness L has constant thermal conductivity, k, uniform generation throughout, q, and...
A plane wall of thickness L has constant thermal conductivity, k, uniform generation throughout, q, and is insulated on one side, at x-0. Only the outer surface temperature (Ts) is known. (a) Derive an equation describing the steady-state wall temperature at any point (x), when given the outer wall surface temperature, Tsi. (b) If L-15 cm, k: 3.4 W/m"K, q-10 kW/m3, and Ts1-300 K, what is the steady-state temperature at x - 6 cm (in K)? S1
A plane wall is composed of two materials. Material A has a uniform heat generation of...
A plane wall is composed of two materials. Material A has a uniform heat generation of 100 kW/m3, a thermal conductivity of 50 W/mK, and a thickness of 10 cm. The inner surface of material A is well insulated. The other surface of material A is connected to Material B which has no generation with a thermal conductivity of 100 W/mK and a thickness of 20 cm. The outer surface of material B is cooled by ambient air at 300...
Problem 2. (20 pts) As shown in the figure, uniform generation occurs inside the spherical core...
Problem 2. (20 pts) As shown in the figure, uniform generation occurs inside the spherical core with a radius n due to reactive heating at a rate of q 10 W/m3. The thermal conductivity of the reactive material is 20 Wm. K. The spherical shell 1Sr is made of stainless steel (s.s.) with a thermal conductivity k2 -15 W/m K. Given 0.5 m and k2 72=0.6 m, water flows outside to cool the s.s. shell at To-25°C and h =...
11. A viscous liquid (p48 Pa.s, p-920 kg/m) lows through the annular space between two horizontal, fixed, concentric cylinders. If the radius of the inner cylinder is 3.81 em and the radius of the outer cylinder is 6.35em, what is the pressure drop along the axis of the annulus per meter when the volume flowrate is 0.028 mls.
11. A viscous liquid (p48 Pa.s, p-920 kg/m) lows through the annular space between two horizontal, fixed, concentric cylinders. If the radius...
Heat Transfer
-A wall 20 cm thick is to be constructed from material that has an average thermal conductivity of 2 W/m C. The wall is to be insulated with 5cm material having an average thermal conductivity of 0.5W/m C. Assuming that the inner and outer surface temperatures of the insulated wall are 200 and 20°C, calculate the heat transfer per unit area and the intermediate Temperature between the insulation and the wall.
Question 5 (8 Marks): The first order irreversible gas phase reaction a- A B is to be carried out in a packed bed reactor with a 1,000 kg of reforming catalyst are packed. The entering pressure is 20 atm and the pressure at the exit of the reactor is 1.0 atm. Calculate the pressure drop parameter. b- Sketch one reactor that is normally used to maximize the selectivity Briefly describe the two terms in the Arrhenius equation C-
Question 5...
do
the second prob pic
Consider a medical device where blood is circulated in the annular space between two coaxial cylinders (Figure 1). The inner cylinder (radius cylinder (radius R) is rotating with constant anacibeNewtonian fluid (density o. are infinitely long, and that blood behaves as an tncompcessiole viscosity . Ignore the effect of gravity. whereas the outer velocity oAssume that the cylinders 1a. Write a conservation equations appropriate to determine the fluid velocity profile insido the annular gap, along...
7. (15 pts.) A gas-phase reaction (A+B-C+D) is carried out in a packed bed reactor. When the particle size was decreased by 15 %, the conversion remained unchanged. When the particle size was decreased by 20%, the conversion decreased. When the original particle size was increased by 15 %, the conversion also decreased. In all cases, the temperature, the total catalyst weight, and all other conditions remained unchanged. Explain the observation.
7. (15 pts.) A gas-phase reaction (A+B-C+D) is carried...
QUESTION 3: 10 marks A liquid phase isomerization reaction A--> was carried out in a Packed- 10 points bed Reactor with a solid catalyst. The reaction is very fast and the overall rate-controlling step is the external mass transfer between catalyst surface and the bulk fluid. Recently, market demand for the product has fallen by 50%, due to Covid-19 pandemic. Therefore, the management has decided to cut the production by half so that the raw material consumption can be reduced...
Two large parallel plates with surface conditions approximating those of a blackbody are maintained at 800°C and 100°C, respectively. Determine the rate of heal transfer by radiation between the plates in Wim and the radiative heat transfer coefficient in W/m K ) 12 Write down the one-dimensional sent heal conduction equation for a plane wall with constant thermal conductivity and heat generation in its simplest form, and indicate what each variable represents 13 Write down the one-dimensional transient heat conduction...
A plane wall of thickness L has constant thermal conductivity, k, uniform generation throughout, q, and is insulated on one side, at x-0. Only the outer surface temperature (Ts) is known. (a) Derive an equation describing the steady-state wall temperature at any point (x), when given the outer wall surface temperature, Tsi. (b) If L-15 cm, k: 3.4 W/m"K, q-10 kW/m3, and Ts1-300 K, what is the steady-state temperature at x - 6 cm (in K)? S1
A plane wall is composed of two materials. Material A has a uniform heat generation of 100 kW/m3, a thermal conductivity of 50 W/mK, and a thickness of 10 cm. The inner surface of material A is well insulated. The other surface of material A is connected to Material B which has no generation with a thermal conductivity of 100 W/mK and a thickness of 20 cm. The outer surface of material B is cooled by ambient air at 300...
Problem 2. (20 pts) As shown in the figure, uniform generation occurs inside the spherical core with a radius n due to reactive heating at a rate of q 10 W/m3. The thermal conductivity of the reactive material is 20 Wm. K. The spherical shell 1Sr is made of stainless steel (s.s.) with a thermal conductivity k2 -15 W/m K. Given 0.5 m and k2 72=0.6 m, water flows outside to cool the s.s. shell at To-25°C and h =...
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