Chem Eng rate of heat transfer qts

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SUMMARY

The discussion centers on calculating the rate of heat transfer (qts) for engine oil flowing over a flat plate. The film temperature is confirmed to be 40 degrees Celsius, and the thermal conductivity of the oil is 0.144 W m-1 K-1. The Prandtl number is given as 2870, and the dynamic viscosity is 0.21 kg m-1 s-1. The user successfully resolved the issue of calculating the Reynolds number after receiving the density of the engine oil.

PREREQUISITES
  • Understanding of heat transfer principles
  • Familiarity with fluid dynamics concepts, specifically Reynolds number
  • Knowledge of thermal conductivity and its application in heat transfer calculations
  • Basic proficiency in using the Prandtl number in thermal analysis
NEXT STEPS
  • Research the calculation of Reynolds number in fluid dynamics
  • Study the relationship between film temperature and heat transfer rates
  • Explore the implications of Prandtl number in heat transfer analysis
  • Learn about the properties of engine oils and their impact on thermal conductivity
USEFUL FOR

Chemical engineers, thermal analysts, 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?
 
Engineering news on Phys.org
Qts solved...
Was right..lecturer wrong AGAIN..was then provided with engine oil density in qts
 

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