Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Experimental Study of the Evaporation of Spreading Liquid Nitrogen

확산하는 액체질소의 증발에 관한 실험적 연구

  • KIM, MYUNGBAE (Energy Plant Safety Department, Korea Institute of Machinery & Materials) ;
  • CHOI, BYUNGIL (Energy Plant Safety Department, Korea Institute of Machinery & Materials) ;
  • KIM, TAE-HOON (Energy Plant Safety Department, Korea Institute of Machinery & Materials) ;
  • DO, KYHYUNG (Energy Plant Safety Department, Korea Institute of Machinery & Materials) ;
  • HAN, YONGSHIK (Energy Plant Safety Department, Korea Institute of Machinery & Materials) ;
  • CHUNG, KYUNGYUL (Energy Plant Safety Department, Korea Institute of Machinery & Materials)
  • 김명배 (한국기계연구원 에너지플랜트안전연구실) ;
  • 최병일 (한국기계연구원 에너지플랜트안전연구실) ;
  • 김태훈 (한국기계연구원 에너지플랜트안전연구실) ;
  • 도규형 (한국기계연구원 에너지플랜트안전연구실) ;
  • 한용식 (한국기계연구원 에너지플랜트안전연구실) ;
  • 정경열 (한국기계연구원 에너지플랜트안전연구실)
  • Received : 2018.07.02
  • Accepted : 2018.10.30
  • Published : 2018.10.30
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Abstract

The investigation of cryogenic liquid pool spreading is an essential procedure to assess the hazard of cryogenic liquid usage. In this experimental study, to measure the evaporation velocity when the pool is spreading, liquid nitrogen was continuously released onto unconfined concrete ground. Almost all of the reported results are based on a non-spreading pool in which cryogenic liquid is instantaneously poured onto bounded ground for a very short period of time. A simultaneous measurement of the pool location using thermocouples and of the pool mass using a digital balance was carried out to measure the evaporation velocity and the pool radius. A greater release flow rate was found to result in a greater average evaporation velocity, and the evaporation velocity decreased with the spreading time and the pool radius.

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References

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