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Evaluation of novel ventilation concepts for train compartments using thermal manikins and subject trials

Schmeling, Daniel und Hörmann, Hans-Jürgen (2018) Evaluation of novel ventilation concepts for train compartments using thermal manikins and subject trials. In: Fourth International Conference on Railway Technology: Research, Development and Maintenance. Fourth International Conference on Railway Technology: Research, Development and Maintenance, 2018-09-03 - 2018-09-07, Sitges, Spanien.

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Offizielle URL: http://www.railwaysconference.com/

Kurzfassung

In the framework of the Next Generation Train (NGT) project of the German Aerospace Center (DLR), different aspects of future high-speed trains and the intermodal passenger and freight transport are addressed. Among many others, the thermal passenger comfort and the energy efficiency of the ventilation system are tackled. Aim of the present study is to identify novel ventilation concepts, which yield a higher comfort level, less energy demand and help to avoid the spreading of infectious diseases. Therefore, studies using thermal manikins and subject trails were performed in a generic train compartment representing the lower level of the NGT high speed train. Besides classical “micro-jet” ventilation, three novel ventilation concepts, comprising cabin displacement ventilation, ceiling based low momentum ventilation as well as hat-rack integrated low momentum ventilation, are investigated. First results covering mean flow velocities and temperatures in the seating zone as well as the heat removal efficiency are presented. These reveal, that displacement ventilation promises high potential for energy saving in combination with very low flow velocities, however, the temperature gradient between head and ankle is increased by a factor of four as compared to the other concepts. Furthermore, subject trails and objective measurements reveal, that hat-rack integrated low momentum ventilation, which is highly capable of being integrated in the structure, performs comparable or better compared to classical micro-jet ventilation. At the conference, we will present a detailed analysis of main flow features and other comfort relevant quantities for all different ventilation concepts. Furthermore, a comparison of the different ventilation concepts revealing the specific advantages and potential disadvantages in detail will be given. It comprises results of subject trails performed at different temperatures of the inflowing air as well as thermal manikin studies.

elib-URL des Eintrags:https://elib.dlr.de/119071/
Dokumentart:Konferenzbeitrag (Vortrag)
Zusätzliche Informationen:http://www.railwaysconference.com/conference-programme.asp; (Donnerstag 06.09.2018, Session B12, Paper B12.01)
Titel:Evaluation of novel ventilation concepts for train compartments using thermal manikins and subject trials
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Schmeling, DanielDaniel.Schmeling (at) dlr.dehttps://orcid.org/0000-0003-2712-9974NICHT SPEZIFIZIERT
Hörmann, Hans-JürgenHans.Hoermann (at) dlr.dehttps://orcid.org/0000-0002-6358-7027NICHT SPEZIFIZIERT
Datum:2018
Erschienen in:Fourth International Conference on Railway Technology: Research, Development and Maintenance
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:train compartment, ventilation concepts, thermal comfort, energy efficiency, thermal manikins, subject trails
Veranstaltungstitel:Fourth International Conference on Railway Technology: Research, Development and Maintenance
Veranstaltungsort:Sitges, Spanien
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:3 September 2018
Veranstaltungsende:7 September 2018
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Verkehr
HGF - Programmthema:Bodengebundener Verkehr (alt)
DLR - Schwerpunkt:Verkehr
DLR - Forschungsgebiet:V BF - Bodengebundene Fahrzeuge
DLR - Teilgebiet (Projekt, Vorhaben):V - Next Generation Train III (alt)
Standort: Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Fluidsysteme, GO
Hinterlegt von: Bachmann, Barbara
Hinterlegt am:11 Sep 2018 14:11
Letzte Änderung:24 Apr 2024 20:23

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