A Hilsch vortex tube operates adiabatically and with no moving mechanical parts splitting a gas stream into two streams one warmer and one cooler than the entering stream One such tube is reported to operate with air entering at 5 bar and 20C and air streams leaving at 27C and 22C both at 1 atm Assume air to be an ideal gas The Cp of air may be assumed to a constant the value at 0C If needed or if easier use a basis of 1 mol of air entering the tube a Are the results above possible Hint Use 1st law to determine flow rates then check 2nd law b If the tube is adiabatic determine the range of temperature of hot air that is possible range can mean between C and C or above C or below C