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PEMFC 사다리꼴 단면 가스채널에서의 물 액적의 거동에 공기 및 물 유입 속도가 미치는 영향 Effect of Air and Water Inlet Velocities on Liquid Water Droplet Behaviors in a PEMFC Trapezoidal Gas Channel

고영진, 김우태
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한국기계기술학회지 (韓國機械技術學會誌)
제19권 제2호 (2017.04)
pp.171-177
한국기계기술학회 (Korean Society of Mechanical Technology)
초록

In a PEMFC gas channel with a trapezoidal cross-section, the effect of air and water inlet velocities on water removal characteristics is numerically studied via the volume of fluid(VOF) method. When the channel wall contact angle is 60 degrees, the air inlet velocities higher than 2.5 m/s are advantageous to obtain lower GDL surface water coverage ratio(WCR). The WCR increases as the wall contact angle increases to 90 or 120 degrees due to the relatively lower surface tension force. In overall, WCR decreases as the air inlet velocity increases and WCR increases as the water inlet velocity increases.

키워드
PEMFC(고분자 전해질 연료전지)Water management(물관리)Gas channel(가스 채널)Trapezoidal cross-section(사다리꼴 단면)
저자
  • 김우태(Kongju National University, Department of Mechanical & Automotive Engineering) | Woo Tae Kim Corresponding Author
  • 고영진(Kongju National University, Department of Mechanical Engineering) | Young Jin Ko