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Thermal comfort of different displacement ventilation systems in an aircraft passenger cabin

Maier, Julia and Marggraf-Micheel, Claudia and Dehne, Tobias and Bosbach, Johannes (2017) Thermal comfort of different displacement ventilation systems in an aircraft passenger cabin. Building and Environment, 111, pp. 256-264. Elsevier. ISSN 0360-1323

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Abstract

Of current interest is the question whether ordinary mixing ventilation (MV) systems in an aircraft can be replaced by or combined with displacement ventilation (DV) systems without risking a decrease in thermal comfort. A reduction of energy consumption is a valuable gain. Three different versions of DV were analysed employing the Do 728 cabin test facility of the German Aerospace Center as cabin environment. Three human subject tests were carried out using 40 participants each: They aimed at analysing the thermal comfort of a) 100% DV, b) a 70:30% hybrid system combining DV and MV and c) a 50:50% hybrid system of DV and MV. Objective and subjective data were gathered to gain a differentiated image of the climate situation. Results were compared with results for MV that were obtained from an earlier study. Measurement data revealed a clear vertical temperature gradient for the DV systems; the relatively smallest temperature difference between feet and head was found for 100% DV and MV. Air velocity was lower in DV and increased with the amount of mixing ventilation that was provided. Regarding subjective sensations, thermal comfort was given in all three DV systems. The overall satisfaction with the climate tended to be highest in the 50:50 hybrid system. In summary, our results demonstrate that displacement ventilation can be used to provide a comfortable climate in an aircraft cabin. Known constraints of DV as e.g. large vertical temperature differences did not have any negative influence on climate comfort ratings of the passengers.

Item URL in elib:https://elib.dlr.de/107882/
Document Type:Article
Title:Thermal comfort of different displacement ventilation systems in an aircraft passenger cabin
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Maier, Juliajulia.maier (at) dlr.deUNSPECIFIED
Marggraf-Micheel, Claudiaclaudia.marggraf (at) dlr.deUNSPECIFIED
Dehne, Tobiastobias.dehne (at) dlr.deUNSPECIFIED
Bosbach, Johannesjohannes.bosbach (at) dlr.deUNSPECIFIED
Date:January 2017
Journal or Publication Title:Building and Environment
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:111
Page Range:pp. 256-264
Publisher:Elsevier
ISSN:0360-1323
Status:Published
Keywords:Displacement ventilation; Mixing ventilation; Aircraft passenger cabin; Thermal comfort; Empirical data
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Human factors and safety in Aeronautics
Location: Göttingen , Hamburg
Institutes and Institutions:Institute of Aerospace Medicine > Aviation and Space Psychology
Institute for Aerodynamics and Flow Technology > Fluid Systems, GO
Deposited By: Witt, Andrea
Deposited On:16 Nov 2016 13:48
Last Modified:06 Sep 2019 15:20

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