Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Evaporation Cooling Phenomena of Droplets Containing Fire Suppression Agents

화제 억제제가 첨가된 수용액 액적의 증발냉각 현상

  • 유갑종 (경북대학교 기계공학과) ;
  • 방창훈 (경북전문대학 소방안전관리과) ;
  • 김현우 (경북전문대학 소방안전관리과)
  • Published : 2001.09.01
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Abstract

Evaporation cooling phenomena of droplets containing fire suppression agents on a hot metal surface were experimentally investigated. Solution of water containing potassium acetate (30-50% by weight) and sodium bromide (10-30% by weight) were used in the experiments, and surface temperatures were ranged from 70-116$^{\circ}C$. The evaporation time of the droplet on the heated surface was determined by using frame-by-frame analysis of the video records. It is found that the apparent evaporation time is shorter in turns of pure water, sodium bromide solution and potassium acetate solution. However, the time averaged heat flux is higher in turns of pure water, sodium bromide solution and potassium acetate solution. In-depth temperature variation of the hot metal does not occur significantly by the kinds of additive.

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References

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