Study on the dedicated outdoor air system (4):Outdoor air dehumidification units

The outdoor air handling unit is the core component of a DOAS (dedicated outdoor air system) that sensible load and latent load are controlled separately. Its performance, price, and size significantly affect the application of DOAS. Presents the characteristics of several current outdoor air handling units of DOAS, and lists the existing problems of the outdoor air dehumidification technology. Proposes a new type of outdoor dehumidification air conditioning unit. Experimental results show that the outdoor air handling unit greatly increases the amount of dehumidification and the air supply outlet temperature with better indexes of the performance, price and size than the conventional outdoor air handling unit.