(719ah) Comparison of Odor Transfer Characteristics of Total Heat Exchangers Between Ion Exchange Resin and Porous Adsorbent as Desiccant

The total heat exchanger can recover both sensible heat as temperature and latent heat as humidity lost by the ventilation in the air conditioning of buildings and has been recognized to be an important device to enhance conservation of energy and reduction of CO₂ emission with keeping a high quality of indoor air. Latent heat (ambient water vapor) is exchanged through honeycomb rotors coated on the surface with desiccant material of porous adsorbent etc. but some complaints are made about accumulation of odor substance on adsorbent and accidental transfer of it back to the room. Mechanism and countermeasures of the odor transfer are discussed in this report by comparing odor transfer rate in the total heat exchanger between porous adsorbent such as silica gel and ion exchange resin as desiccant.