I am calculating Reynolds number for a automotive ac suction line with 16mm Id 300kpa and 10 deg C and 230 kg/hr. I am getting around 200,000. I think I got laminar flow, but the equation says turbulent. greater than 10,000. dynamic viscosity is my most questionable variable. i checked and double checked all my SI units. Anybody know if this Reynolds number is in the reasonable range?