In actual conditions the process 1-2 represents the air cooling in working dry channel, while the process 2-3’-8 describes the air heating and humidification in the working wet channel. The conventional (adiabatic) cooling is characterized by the process 6-7 (ideal process) and process 6-9 (real process). Thus, the air humidity attained in the M-cycle is 6.5 times greater than humidity rate achieved in the adiabatic cooling system (0.025…0.08 kg/kg; Fig.2), where the air humidity grows only in 3.2 times. More than four times growth in the wet air enthalpy throughout the M-cycle (constant enthalpy lines are not shown in Fig.2) brings the great opportunity in various industrial applications.