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Ceiling-based cabin displacement ventilation in an aircraft passenger cabin: Analysis of thermal comfort

Maier, Julia and Marggraf-Micheel, Claudia and Zinn, Frank and Dehne, Tobias and Bosbach, Johannes (2018) Ceiling-based cabin displacement ventilation in an aircraft passenger cabin: Analysis of thermal comfort. Building and Environment, 146, pp. 29-36. Elsevier. DOI: 10.1016/j.buildenv.2018.09.031 ISSN 0360-1323

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Official URL: https://www.sciencedirect.com/science/article/pii/S0360132318305894

Abstract

Applying energy efficiency enhancing technologies to the aircraft cabin ideally incorporates the passengers' comfort. Of current interest is the question of whether ordinary mixing ventilation (MV) systems in an aircraft cabin can be replaced by or combined with ceiling-based cabin displacement ventilation (CCDV) systems. A reduction of energy consumption by implementing CCDV without risking a decrease in thermal comfort would be a valuable gain. Different climatic scenarios were established by matching cabin displacement ventilation (CDV) from beneath the passenger seats with CCDV. Three ratios of supply air were arranged as treatments within a cross-over repeated measurement design (50%/50%, 70%/30%, and 100%/0% [CCDV/CDV]). As a baseline, a conventional MV scenario was assessed. In each CCDV/CDV scenario, 90 subjects were tested, in the MV-trial 45. The average cabin temperature throughout all tests was 23.5 °C with 610 l/s of supply air and approximately 25% relative humidity. Subjects rated the intensity of four climate parameters (air temperature, air velocity, humidity, and air quality) and corresponding comfort level. Significant differences in the perceived intensity of climate parameters between the four ventilation scenarios became obvious. Temperature was perceived to be highest in the 50/50 scenario and air draught was perceived as being strongest with MV. Comfort evaluations did not differ significantly between the four ventilation scenarios, but differential analyses showed that in the 50/50 CCDV/CDV scenario, a more homogeneous cabin air flow was found that led to improved thermal comfort for aisle seats.

Item URL in elib:https://elib.dlr.de/123322/
Document Type:Article
Additional Information:CENT - Comfort and efficiency enhancing technologies
Title:Ceiling-based cabin displacement ventilation in an aircraft passenger cabin: Analysis of thermal comfort
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Maier, JuliaJulia.Maier (at) dlr.dehttps://orcid.org/0000-0003-1387-7939
Marggraf-Micheel, ClaudiaClaudia.Marggraf (at) dlr.dehttps://orcid.org/0000-0001-6080-2732
Zinn, FrankFrank.Zinn (at) dlr.deUNSPECIFIED
Dehne, TobiasTobias.Dehne (at) dlr.deUNSPECIFIED
Bosbach, JohannesJohannes.Bosbach (at) dlr.dehttps://orcid.org/0000-0002-1531-127X
Date:December 2018
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:146
DOI :10.1016/j.buildenv.2018.09.031
Page Range:pp. 29-36
Editors:
EditorsEmail
Chen, QElsevier
Publisher:Elsevier
ISSN:0360-1323
Status:Published
Keywords:Cabin 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 > Ground Vehicles
Institute for Aerodynamics and Flow Technology > Experimental Methods, GO
Deposited By: Maier, Dr. Julia
Deposited On:27 Nov 2018 10:05
Last Modified:06 Sep 2019 15:20

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