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J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Experimental investigation into inhibitory effect of R1216 on the flammability of refrigerant R600a

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R1216对易燃制冷剂R600a的抑燃试验研究

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Jan.2026, Vol.49 No.1: 43-48

DOI: 10.3969/j.issn.1003-5060.2026.01.006

Authors

SHI Yongjie, LIU Xiangnong, ZHAI Rui

(School of Automobile and Traffic Engineering, Hefei University of Technology, Hefei 230009, China)

Abstract and Keywords

Abstract: R600a is a natural refrigerant with a low global warming potential(GWP) that can substitute some hydrofluorocarbons(HFCs). However, due to its flammability, it is typically employed in refrigeration equipment with a smaller refrigerant charge. To improve the safety of R600a and broaden its application range, this study blends it with flame retardant R1216. The combustion characteristics of R1216/R600a mixture under conditions of $ 30\;^{\circ}C $ and 101.3 kPa initial pressure were investigated using a constant volume combustion bomb. Parameters such as flammability limits, unstretched flame speed, Markstein length, and laminar burning velocity were investigated. The experimental results show that R1216 has a significant inhibitory effect on the combustion of R600a, and the inhibitory effect becomes more significant as the volume ratio of R1216 to R600a increases. The study results provide references for the safe application of R1216/R600a mixture in the refrigeration industry.

Keywords: natural refrigerant R600a; flammability; flame retardant R1216; combustion characteristics; inhibitory effect

作者信息

史永杰，刘向农，翟瑞

（合肥工业大学汽车与交通工程学院，安徽合肥230009）

摘要和关键词

摘要: R600a 是一种具有低全球变暖潜值(global warming potential, GWP)的天然制冷剂, 可替代部分氢氟烃(hydrofluorocarbons, HFCs)工质。但由于其易燃性, 通常只用于充注量较小的制冷设备中。为改善 R600a 的安全性并拓宽其应用范围, 文章将其与阻燃剂 R1216 混合, 利用定容燃烧弹试验平台, 研究 R1216/R600a 混合物在温度为 $ 30^{\circ} $C、初始压力为 101.3 kPa 情况下的燃烧特性, 包括可燃极限、无拉伸火焰速度、马克斯坦长度和层流燃烧速度等参数。结果表明, R1216 对 R600a 的燃烧性有明显的抑制作用, 且随着 R1216 与 R600a 体积比的增加, 抑制效果更为显著。该研究结果为 R1216/R600a 混合物在制冷领域的安全应用提供参考。

关键词: 天然制冷剂 R600a；易燃性；阻燃剂 R1216；燃烧特性；抑制作用

Funding

国家自然科学基金资助项目(52106005); 中国博士后科学基金资助项目(2022M721059)和中央高校基本科研业务费专项资金资助项目(JZ2023HGTB0254)

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