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Comparison of local equivalent temperatures and subjective thermal comfort rating with regard to passenger comfort in a train compartment

Lange, Pascal and Schmeling, Daniel and Hörmann, Hans-Jürgen and Volkmann, André (2019) Comparison of local equivalent temperatures and subjective thermal comfort rating with regard to passenger comfort in a train compartment. In: IAQVEC 2019. IAQVEC 2019, 5. - 7. September 2019, Bari, Italien.

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Official URL: https://www.iaqvec2019.org/

Abstract

Two methods for assessing thermal passenger comfort are analysed and compared to each other in terms of different ventilation concepts and different inflow air temperatures in a generic train laboratory. The studied ventilation systems comprise state-of-the-art micro-jet ventilation and a novel vertical ventilation system called displacement ventilation. The latter is based on a homogeneous and low-momentum air supply near the floor. In a first step, tests with human subjects are conducted addressing both temperature sensation and evaluation. In a second step, objective thermal comfort parameters are acquired using a calibrated thermal manikin, which enables the measurement of local equivalent temperatures. For reason of comparability, the results of the subjects test are converted into equivalent temperatures. The results prove that both methods, subjective and objective, correspond well under steady-state thermal conditions. The data of the subject tests are characterized by significantly higher variations compared to the experimentally determined values. Concerning the overall thermal comfort, both ventilation systems show comparable results for the two investigated inflow air temperatures. However, the comfort distribution over the body parts differs significantly between the two ventilation concepts.

Item URL in elib:https://elib.dlr.de/122687/
Document Type:Conference or Workshop Item (Speech)
Title:Comparison of local equivalent temperatures and subjective thermal comfort rating with regard to passenger comfort in a train compartment
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lange, PascalPascal.Lange (at) dlr.deUNSPECIFIED
Schmeling, DanielDaniel.Schmeling (at) dlr.deUNSPECIFIED
Hörmann, Hans-Jürgenhans.hoermann (at) dlr.deUNSPECIFIED
Volkmann, AndréAndre.Volkmann (at) dlr.deUNSPECIFIED
Date:September 2019
Journal or Publication Title:IAQVEC 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Equivalent Temperature, Thermal Comfort, Human Subject Test, Train Compartment
Event Title:IAQVEC 2019
Event Location:Bari, Italien
Event Type:international Conference
Event Dates:5. - 7. September 2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Next Generation Train III (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Ground Vehicles
Institute of Aerospace Medicine > Aviation and Space Psychology
Deposited By: Lange, Pascal
Deposited On:26 Sep 2019 11:52
Last Modified:26 Sep 2019 11:52

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