Chemical engineering heat transfer qts

AI Thread Summary
The discussion revolves around calculating the film temperature and heat transfer rate for engine oil flowing over a flat plate. The film temperature is determined to be 40 degrees Celsius, which was confirmed after resolving issues with missing density data. Participants noted the challenge of calculating the Reynolds number without density. The thermal properties provided include thermal conductivity, Prandtl number, and dynamic viscosity. The conversation highlights the importance of accurate data in heat transfer calculations.
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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