As a chemical engineer working in an oil refinery, you are told you need install a new pipe for transporting light crude oil. The flow rate of oil will be 2000 ft 3 /hour and an expected pressure drop of 120 psi. The pipe lays horizontally but traverses the whole length of refinery which is 3200 feet. Find the required diameter of the pipe.

Note: The pipe is made of commercial steel and the viscosity of the oil is .01 kg/m-s with a specific gravity of .8