Journal of the Korean Institute of Gas (한국가스학회지)

The Korean Institute of GAS (한국가스학회)
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An Analysis of the Effect of Pressure Ramp Rate on the Major Parameters of the Standard Hydrogen Fueling Protocol

수소충전 시 압력상승률이 표준충전프로토콜 중요변수에 미치는 영향 해석

  • Received : 2019.11.26
  • Accepted : 2020.01.21
  • Published : 2020.02.28
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Abstract

It is not easy to fully fuel high pressure(70 MPa) hydrogen in a hydrogen vehicle tank quickly. This is because the temperature inside the tank rises rapidly due to heat caused by the Joule-Thomson effect, etc. So fueling protocols such as SAE J2601 in the U.S. and JPEC-S 0003 in Japan appeared. However, there is a problem with these protocols that a number assumption are introduced and the content is too complex and limited in scope. This study was conducted to develop a new protocol based on complete real-time communication. In this study, the hydrogen fueling simulation program were used to examine how the pressure ramp rate affects the temperature and pressure rise in the tank and the fueling flow rate. The results confirmed that the first parameter to be considered in determining the pressure ramp rate is the temperature of the tank.

수소자동차용기에 높은 압력(70 MPa)의 수소를 빨리 완전 충전하는 것은 쉽지 않다. 그 이유는 줄-톰슨효과 등에 의해 발생하는 열로 인하여 용기내의 온도가 급속히 상승하기 때문이다. 미국의 SAE J2601, 일본의 JPEC-S 0003 같은 충전프로토콜이 제정되어 운영되고 있다. 그러나 이들 프로토콜에는 수많은 가정이 도입되어 내용이 너무 복잡하고 적용범위가 제한적이라는 문제가 있다. 이 연구는 완벽한 실시간 통신에 기반한 새로운 프로토콜을 개발하기 위해서 수행되었다. 이 연구에서는 수소충전 시뮬레이션 프로그램을 이용하여 압력상승률이 자동차용기내의 온도 및 압력 상승과 충전유속에 어떠한 영향을 미치는지 살펴보았다. 그 결과 압력상승률 결정 시 우선 고려하여야 할 매개변수는 자동차 용기의 온도라는 것을 알 수 있었다.

Keywords

References

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