Currently, I have a project that researchs methods to save fuel, mainly the practicality of using existing cars on the road to help with logistics in a region. So assuming 40000 lbs of cargo need to be shipped from point A to B (100miles). One can either use a single truck to ship this via one...
Air of temperature 80 F enters a copper tube with inner diameter of 2 mm. The copper tube is of fixed temperature of -50 F.
Air speed is 8 m/s in order to get the flow rate I want.
How long should the tube be in order to cool the air to at least 0 F when it comes out of the end of the tube...
