Thanks for all of the input. The polyurethane line is 1/4"OD and 3/8"ID. The N2 is flowing at 75SCFH @ approx 15 psi. It is a constantly monitored process. I think I'm going to by a SS tub, get some ice, and do some experimenting this week. Thanks again.
I am currently using nitrogen gas as a coolant. The tube length from dewar to coolant nozzle is appox 20ft. It's coming out of the coolant nozzle at 72°F. I need to cool the gas to ~40-50°F. I was thinking of running the tube through a tub of ice to cool the Nitrogen as a simple solution. I...