主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

Fire Science and Technology ›› 2020, Vol. 39 ›› Issue (2): 250-253.

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Solubility measurement and simulated calculation of Nitrogen in HFC-227ea

XIAN Xue-lei, ZHANG Jun-na, ZHAO Qing-song,LIU Lian-xi, DONG Hai-bin, SHENG Yan-feng,MA Jian-qin   

  1. (Tianjin Fire Research Institute of MEM, Tianjin 300382,China)
  • Received:2019-09-22 Online:2020-02-15 Published:2020-02-15

Abstract: In order to study the solubility of nitrogen in HFC-227ea, the solubility at different temperatures and pressures was measured by pressure-volume-temperature(PVT) apparatus. Then systematically discussed the effects of temperature and pressure on the solubility and Henry coefficient. Finally, based on the experimental data, the solubility model of nitrogen in HFC-227ea was established. The research shows that increasing temperature is benefit for N2 dissolution and the N2 solubility will increase with the pressure reducing in HFC-227ea. The fitting effect of nitrogen dissolution model in sevofluoropropane is better, and the maximum deviation is less than 3%.

Key words: nitrogen, HFC-227ea, solubility, extinguishant