Thermal sensation and comfort with five different air terminal devices for personalized ventilation

Thirty human subjects participated in experiments with five different air terminal devices forpersonalized ventilation operating at two levels of room air temperature within the range prescribed instandards for thermal comfort, namely 23C and 26C. The subjects actively used the possibility to change the airflow rate and to adjust the positioning of the air terminal devices in regard to the airflow direction. The individual control provided allowed subjects to maintain thermal neutrality with the systems studied, except one, named Headset at the higher room temperature of 26C. The local thermal environment created with personalized ventilation was assessed as acceptable. The airflow towards the face was preferred to the airflow towards the abdomen.