The search result changed since you submitted your search request. Documents might be displayed in a different sort order.
  • search hit 20 of 38
Back to Result List

Performance evaluation of ductless personalized ventilation in comparison with desk fans using numerical simulations

  • 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 theThe 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.show moreshow less

Download full text files

Export metadata

Metadaten
Document Type:Article
Author:Dr.-Ing. Hayder AlsaadORCiDGND, Prof. Conrad VoelkerORCiDGND
DOI (Cite-Link):https://doi.org/10.1111/ina.12672Cite-Link
URN (Cite-Link):https://nbn-resolving.org/urn:nbn:de:gbv:wim2-20200422-41407Cite-Link
URL:https://onlinelibrary.wiley.com/doi/full/10.1111/ina.12672
Parent Title (German):Indoor Air
Publisher:John Wiley & Sons Ltd
Language:English
Date of Publication (online):2020/04/22
Date of first Publication:2020/04/07
Release Date:2020/04/22
Publishing Institution:Bauhaus-Universität Weimar
Institutes:Fakultät Bauingenieurwesen / Professur Bauphysik
Volume:2020
Pagenumber:14
Tag:IAQ; computational fluid dynamics; desk fan; ductless personalized ventilation; thermal comfort
GND Keyword:Behaglichkeit; Raumklima; Strömungsmechanik; Fluid
Dewey Decimal Classification:500 Naturwissenschaften und Mathematik / 530 Physik / 532 Mechanik der Fluide; Mechanik der Flüssigkeiten
BKL-Classification:56 Bauwesen / 56.55 Bauphysik, Bautenschutz
Licence (German):License Logo Creative Commons 4.0 - Namensnennung-Nicht kommerziell (CC BY-NC 4.0)