Chemical engineering heat transfer qts

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SUMMARY

The discussion focuses on calculating the film temperature and rate of heat transfer for engine oil flowing over a flat plate. The engine oil, at 60°C, has a thermal conductivity of 0.144 W m-1 K-1, a Prandtl number of 2870, and a dynamic viscosity of 0.21 kg m-1 s-1. The film temperature was confirmed to be 40°C, and the user successfully solved the heat transfer question after receiving the necessary density information from their lecturer.

PREREQUISITES
  • Understanding of heat transfer principles
  • Familiarity with fluid dynamics concepts
  • Knowledge of thermal conductivity and Prandtl number
  • Ability to calculate Reynolds number
NEXT STEPS
  • Research the calculation of Reynolds number in fluid flow
  • Learn about the significance of film temperature in heat transfer
  • Explore the relationship between Prandtl number and heat transfer efficiency
  • Study the effects of dynamic viscosity on fluid flow characteristics
USEFUL FOR

Chemical engineers, thermal system designers, and students studying heat transfer and fluid dynamics will benefit from this discussion.

tcaldwell
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Heat Transfer Qts
Engine oil at 60 oC flows over flat plate whose temperature is at 20 oC with a velocity of 2 m s-1. The length of the plate is 5m. What is the film temperature and the rate of heat transfer per unit width of the entire plate?
Additional information (at the film temperature):
Thermal conductivity of oil: Prandtl number:
Dynamic viscosity:
k1 = 0.144 W m-1 K-1
Pr = 2870
u = 0.21 kg m-1 s-1

Help!
Can't get a Reynolds number without density..
Is film temperature 40 degrees Celsius?
 
Physics news on Phys.org
Qts solved..
Was right..lecturer wrong AGAIN..was then provided with engine oil density
 

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