  The process of the Joule-Thomson adiabatic expansion within RNED-AdS
spacetime is investigated. The isenthalpic P-T diagrams and the inversion
temperature were depicted. The inversion temperature depends on the magnetic
charge and RNED coupling constant of black holes. When the Joule-Thomson
coefficient vanishes, cooling-heating phase transition occurs. We consider the
cosmological constant as a thermodynamic pressure ant the black hole mass is
treated as the chemical enthalpy.
