Hmanlai atang tawh khan mihringte hian thil vawt (dry materials) atan natural heat source leh natural ventilation hmangin kan lo hmang thin a, chu chu natural condition-in a tihkhawtlai vek a, chu chuan productivity a ti tlem hle. Thil siam chhuah a lo chhuah chhoh zel avangin heng hmanrua te hi artificially controlled heat sources leh mechanical ventilation dehumidification hmangin an thlak zauh zauh ta a ni.
Tunlai dryer-te chuan a tir lamah chuan intermittent, fixed-bed dryers an hmang thin. Kum zabi 19-na laihawl-ah chuan tunnel dryer hman a nih avangin intermittent atanga continuous operation-ah inthlak danglamna a awm ta a ni. Rotary drum dryers hian particulate materials te chu a tibuaitu tha hle a, drying capacity leh intensity a ti tha hle. Industry thenkhat chuan an mamawh bik ang zela continuous-operation dryer an siam a, chu chu textile leh paper industry-a drum dryer te hi a ni.
Kum zabi 20-na tir lamah chuan spray dryer hi bawnghnute siamnaah hman tan a ni a, chu chuan liquid materials lian tak-scale drying atana hmanraw chak tak a ni. Kum 1940 chho atang khan fluidization technology lo piang chhuak a nih atang khan high-intensity, high-productivity fluidized bed leh airflow dryers te chu a lo chhuak ta a ni. Freeze-sublimation, radiation, leh dielectric dryer te chuan mamawh bikte phuhrukna tur kawng thar a pe a. Far-infrared leh microwave dryer te hi kum 1960 chho atang khan siam tan a ni.
