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An oil film acts as a lubricant (? = 10 N-s/m2, k = 230 W/m-K,? = 1200 kg/m3) between two coaxial cylindrical surfaces (outer diameter and inner diameter = 99.5 mm). The outer cylinder rotates at . Calculate the maximum temperature in the oil film if both wall temperatures are maintained at 75°C. The rate of heat generation per unit volume due to viscous dissipation may be assumed to be . As the oil layer is very thin ignore any convection in the layer.
  • a)
    89
  • b)
    90
Correct answer is between '89,90'. Can you explain this answer?
Verified Answer
An oil film acts as a lubricant (? = 10 N-s/m2, k = 230 W/m-K,? = 120...
Since the clearance between two cylinders is very small, the velocity variation in the oil may be assumed to be linear. At any point in the oil, the heat conduction equation can be given as
Where
At y = 0, T = 75°C, ∴ C2 = 75°C
At y = C, T = 75°C,
For maximum temperature =
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Most Upvoted Answer
An oil film acts as a lubricant (? = 10 N-s/m2, k = 230 W/m-K,? = 120...
Since the clearance between two cylinders is very small, the velocity variation in the oil may be assumed to be linear. At any point in the oil, the heat conduction equation can be given as
Where
At y = 0, T = 75°C, ∴ C2 = 75°C
At y = C, T = 75°C,
For maximum temperature =
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Community Answer
An oil film acts as a lubricant (? = 10 N-s/m2, k = 230 W/m-K,? = 120...
Since the clearance between two cylinders is very small, the velocity variation in the oil may be assumed to be linear. At any point in the oil, the heat conduction equation can be given as
Where
At y = 0, T = 75°C, ∴ C2 = 75°C
At y = C, T = 75°C,
For maximum temperature =
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An oil film acts as a lubricant (? = 10 N-s/m2, k = 230 W/m-K,? = 1200 kg/m3) between two coaxial cylindrical surfaces (outer diameter and inner diameter = 99.5 mm). The outer cylinder rotates at . Calculate the maximum temperature in the oil film if both wall temperatures are maintained at 75°C. The rate of heat generation per unit volume due to viscous dissipation may be assumed to be . As the oil layer is very thin ignore any convection in the layer.a)89b)90Correct answer is between '89,90'. Can you explain this answer?
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An oil film acts as a lubricant (? = 10 N-s/m2, k = 230 W/m-K,? = 1200 kg/m3) between two coaxial cylindrical surfaces (outer diameter and inner diameter = 99.5 mm). The outer cylinder rotates at . Calculate the maximum temperature in the oil film if both wall temperatures are maintained at 75°C. The rate of heat generation per unit volume due to viscous dissipation may be assumed to be . As the oil layer is very thin ignore any convection in the layer.a)89b)90Correct answer is between '89,90'. Can you explain this answer? for Chemical Engineering 2024 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about An oil film acts as a lubricant (? = 10 N-s/m2, k = 230 W/m-K,? = 1200 kg/m3) between two coaxial cylindrical surfaces (outer diameter and inner diameter = 99.5 mm). The outer cylinder rotates at . Calculate the maximum temperature in the oil film if both wall temperatures are maintained at 75°C. The rate of heat generation per unit volume due to viscous dissipation may be assumed to be . As the oil layer is very thin ignore any convection in the layer.a)89b)90Correct answer is between '89,90'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An oil film acts as a lubricant (? = 10 N-s/m2, k = 230 W/m-K,? = 1200 kg/m3) between two coaxial cylindrical surfaces (outer diameter and inner diameter = 99.5 mm). The outer cylinder rotates at . Calculate the maximum temperature in the oil film if both wall temperatures are maintained at 75°C. The rate of heat generation per unit volume due to viscous dissipation may be assumed to be . As the oil layer is very thin ignore any convection in the layer.a)89b)90Correct answer is between '89,90'. Can you explain this answer?.
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