Experimental investigation of the air cleaning effect of a desiccant rotor on indoor air chemical pollutants

That study investigated the possibility of using a regenerative desiccant rotor for air purification.A laboratory study was carried out in a climate chamber, a dehumidifier with a silica gel desiccant rotor was installed within it to treat the recirculation airflow.A Proton-Transfer-Reaction - Mass Spectrometry (PTR-MS) gas analyzer was used for the measurement of VOCs concentration upstream and downstream of the desiccant rotor.The experiment confirmed that indoor humidity has little influence on the effectiveness of VOC removal by a desiccant rotor and that this technique is efficient for regenerative air cleaning.