The new humidifier system with unique method was developed. This syste
m consists of a humidifier rotor, two fans, a heater and a driving mot
or of humidifier rotor. The outdoor air passes through the process reg
ion of the rotor that contains an adsorbent, so that the outdoor humid
ity is adsorbed; on the other hand, the heated indoor air passes throu
gh the regenerative region of the rotor, so that regenerated humidity
is supplied to the room. As the result, this humidifier system doesn't
need water supply. When the room is heated up to 23 degrees C from 5
degrees C by the conventional air conditioner in winter, the room rela
tive humidity come to below 20% from 50%. However, the air conditioner
equipped with this humidifier system can realize healthy room conditi
on of 23 degrees C, 45%RH.