Jianrong Yang, Jan Kaczmarczyk, Arsen Melikov, P. Ole Fanger
Bibliographic info:
Healthy Buildings 2003 - Proceedings 7th International Conference (7th-11th December 2003) - National University of Singapore - Vol. 2, pp 345-350, 3 Fig., 1 Tab., 13 Ref.

The performance of a Personalized Ventilation (PV) system with regard to air qualityperceived by people was studied at three room temperature levels: 23, 26 and 29C. Thirtyhuman subjects participated in the experiment. The system supplied both isothermal (23, 26,29C) and non-isothermal (23C) outdoor air from an outlet attached to a moveable arm. Thesubjects were delegated with control of both airflow velocity and its direction. Physicalmeasurements performed with a breathing thermal manikin were used to explain the resultsfrom the human subject experiments. The results show that the inhaled air quality wasperceived significantly better with the PV system than with mixing ventilation only. Themeasurements performed with the breathing manikin showed that around 30% of the airinhaled by the subjects was outdoor air provided by the present PV system. Therefore thequality and the temperature of the room air had a large impact on the perceived air quality evenwith the tested PV system. Further development of PV outlets is recommended to improve theair delivery efficiency.