Calculate Flow Rate for Reynold's Number Homework

[interxlocking]

Homework Statement

A fluid with relative density σ=0.7 and kinematic viscosity $$\nu$$=0.6mm²/s is used as a cooling agent in an electrical
equipment cooling system. The fluid circulates in a 2m long copper pipe of 3mm in diameter. A pump is used to
create a head difference of 0.5m between entry and exit of the system. Use results of your small pipe experiment to
calculate coolant flow rate through the system. Justify application of your results to this problem.

From the small pipe experiment I was able to find Reynold's number and the friction factor.

Homework Equations

h_f=f * L/D * v²/2g
f = 16/Re
Re= Q * d / $$\nu$$ * (d²*pi/4)

The Attempt at a Solution

From the small pipe experiment I was able to find Reynold's number and the friction factor. However, since the pipe from the actual problem is not sure I am not sure how Reynold's number will correlate between the two pipes to help find the flow rate.

Hopefully this was clear.

 

[edgepflow]

If the flow remains laminar (Re < 2000), then your fD = 64 / Re relation will still apply. I used the Darcy friction factor; I believe the 16 / Re is the Fanning friction factor.