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Study on the Temperature Distribution of Cabin under Various Car Heating Modes

난방기 출력에 따른 철도차량 객실 내부 온도 분포 분석

  • Cho, Youngmin (Testing and Certification Center, Korea Railroad Research Institute) ;
  • Yoon, Young-Kwan (Eco-Transport Systems Research Division, Korea Railroad Research Institute) ;
  • Park, Duck-Shin (Eco-Transport Systems Research Division, Korea Railroad Research Institute) ;
  • Kim, Tae-Wook (Testing and Certification Center, Korea Railroad Research Institute) ;
  • Kwon, Soon-Bark (Eco-Transport Systems Research Division, Korea Railroad Research Institute) ;
  • Jung, Woo-Sung (Eco-Transport Systems Research Division, Korea Railroad Research Institute) ;
  • Kim, Hee-Man (Environmental Management Department, Planning & Coordination Headquater)
  • Received : 2012.08.08
  • Accepted : 2012.11.10
  • Published : 2012.12.31

Abstract

Abnormal climate or weather is more frequently reported nowadays due to the global climate change. Especially, extremely low temperature in winter season may cause bad thermal discomfort of passengers. In this study, the effect of car heating modes on cabin temperature change and distribution was studied by using a real-scale environmental chamber for passenger cabin. It was found that the cabin temperature rose quickly at the initial stage of heating system operation, but it stopped increasing after certain point. And, temperature was higher when the height from the floor was higher. Based on the obtained result, the way to minimize the decrease of passengers' thermal comfort was suggested.

최근 기후변화에 따른 이상 기상현상이 증가하고 있는데, 특히 동절기의 혹한은 승객의 열적 쾌적성을 크게 저하할 우려가 있다. 이에 본 연구에서는 철도차량 실대형 환경챔버를 이용하여 저온 조건에서 철도차량의 난방장치 가동시 객실 내부의 온도변화 및 분포를 알아보았다. 실험결과 난방시스템 가동 직후에는 객실 내부온도가 급격하게 증가하였으나, 일정 시간 경과 후에는 더 이상 증가하지 않았으며, 객실의 위쪽이 아래쪽보다 온도가 더 높게 나타났다. 이러한 결과들을 통해 승객의 온열 쾌적감 저하를 최소화할 수 있는 방안을 제시하고자 하였다.

Keywords

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  1. Study of the Effects of Ambient Temperature and Car Heater Power on the Train Cabin Temperature vol.15, pp.9, 2014, https://doi.org/10.5762/KAIS.2014.15.9.5877