Heat Transfer Qts

by tcaldwell
Tags: engineering
tcaldwell is offline
Mar30-13, 11:44 AM
P: 7
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

Can't get a Reynolds number without density..
Is film temperature 40 degrees Celsius????
Phys.Org News Partner Engineering news on Phys.org
A smart prosthetic knee with in-vivo diagnoses
Old tires become material for new and improved roads
Students take clot-buster for a spin
tcaldwell is offline
Mar30-13, 05:34 PM
P: 7
Qts solved..
Was right..lecturer wrong AGAIN..was then provided with engine oil density

Register to reply

Related Discussions
Heat Transfer: Calculating heat transfer rate? Engineering, Comp Sci, & Technology Homework 4
How long to melt the ice(heat, heat transfer, latent heat) Introductory Physics Homework 3
Heat transfer, energy needed to heat house Introductory Physics Homework 3
Equation for heat transfer and output of heat from a thermal storage unit Classical Physics 0
A heat pipe is a simple device which can be used to transfer heat over Engineering, Comp Sci, & Technology Homework 2