A Study on the Improvement of Cooling Efficiency for EMU by Changing the Operation Method of Line Flow Fans and Door Opening Systems

전동차의 라인데리아 및 출입문 작동 방법 변화를 이용한 냉방 효율 향상에 관한 연구

  • 오준규 (서울과학기술대학교, 철도전문대학원, 서울메트로 CS경영처) ;
  • 원시태 (서울과학기술대학교, 제품설계금형공학과) ;
  • 남성원 (한국철도기술연구원, 친환경연구실)
  • Published : 2011.10.20

Abstract

EMU(Electric Multiple Unit) of Seoul Metro are equipped with air conditioning and six line flow fans for air circulation. In summer, the air conditioning and line flow fans usually work at the same time. Recently, high oil price leads more people to use public transportation, which in turn makes them feel hotter inside the rolling stocks and complain about air conditioning state. In order to improve indoor air quality in summer, it is inevitable to increase the cooling capacity of air conditioners, which costs a lot of money. Thus, we need to raise cooling efficiency by rearranging existing devices effectively. In this study, we found a better way to improve refreshment inside the trains by changing the operation method of line flow fans and door opening systems. The results will help improve the cooling efficiency of EMU in summer. Also, more precise experiments and analyses of our data can lead to various methods to increase energy efficiency.

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