TY  - JOUR
A1  - Alsaad, Hayder
A1  - Völker, Conrad
T1  - Performance evaluation of ductless personalized ventilation in comparison with desk fans using numerical simulations
JF  - Indoor Air
N2  - The performance of ductless personalized ventilation (DPV) was compared to the performance of a typical desk fan since they are both stand-alone systems that allow the users to personalize their indoor environment. The two systems were evaluated using a validated computational fluid dynamics (CFD) model of an office room occupied by two users. To investigate the impact of DPV and the fan on the inhaled air quality, two types of contamination sources were modelled in the domain: an active source and a passive source. Additionally, the influence of the compared systems on thermal comfort was assessed using the coupling of CFD with the comfort model developed by the University of California, Berkeley (UCB model). Results indicated that DPV performed generally better than the desk fan. It provided better thermal comfort and showed a superior performance in removing the exhaled contaminants. However, the desk fan performed better in removing the contaminants emitted from a passive source near the floor level. This indicates that the performance of DPV and desk fans depends highly on the location of the contamination source. Moreover, the simulations showed that both systems increased the spread of exhaled contamination when used by the source occupant.
KW  - Behaglichkeit
KW  - Raumklima
KW  - Strömungsmechanik
KW  - Fluid
KW  - computational fluid dynamics
KW  - desk fan
KW  - ductless personalized ventilation
KW  - IAQ
KW  - thermal comfort
Y1  - 2020
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20200422-41407
UR  - https://onlinelibrary.wiley.com/doi/full/10.1111/ina.12672
VL  - 2020
PB  - John Wiley & Sons Ltd
ER  -