Partager

Effet des conditions de température ambiante sur la distribution des températures dans un wagon pendant le fonctionnement des systèmes de chauffage.

Effect of ambient temperature condition on the temperature distribution in rail car during the operation of heaters.

Numéro : pap. 927

Auteurs : CHO Y., YOON Y. K., PARK D. S., et al.

Résumé

Abnormal change of weather is more frequently observed nowadays due to the climate change on the earth. Because extremely low or high temperature may cause discomfort of passengers, the rail car operators require excessive heating or cooling capacity, resulting in the consumption of more energy. In this study, the heating performance of rail car was studied under various ambient temperature conditions in order to optimize the heating energy consumption and the thermal comfort of passengers. The ambient temperature was varied from -10°C to 10°C by using a real-scale environmental chamber for rail car, and the temperature change inside the car was monitored when the heating system was partially or fully turned on. It was found that the average temperature drastically increased upon the operation of heaters, but it was saturated after 8 h. The vertical temperature distribution showed that the temperature was higher when the height from the floor was higher due to the movement of lighter warmed air moved to upward directions. However, the horizontal temperature distribution showed that there was no significant temperature distribution among front, mid, and back section. Based on the obtained results, the needs of air mixing for getting more uniform temperature distribution was suggested in this study.

Documents disponibles

Format PDF

Pages : 10 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Effect of ambient temperature condition on the temperature distribution in rail car during the operation of heaters.
  • Identifiant de la fiche : 30010212
  • Langues : Anglais
  • Source : Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Date d'édition : 16/06/2013

Liens


Voir d'autres communications du même compte rendu (424)
Voir le compte rendu de la conférence

Indexation