本文基于ASHRAE研究项目RP-1583的研究结果。本研究的目的是对测定燃烧速度（Su）的试验方法进行严格评估，该燃烧速度（Su）用作最低可燃制冷剂等级（2L子类）的指标。目标制冷剂为轻度易燃的R-32和R-32/134a（60/40 wt%）混合物。在本文中，我们评估了封闭容器法，以确定其精度和性能。引文:美国科学与技术研究院学报第119卷第2部分，科罗拉多州丹佛市。

This paper is based on findings resulting from ASHRAE Research Project RP-1583.The objective of this study is to critically evaluate test methods for determining burning velocity (Su ), which is used as the index of the lowest flammable refrigerant class (subclass 2L). The target refrigerants were mildly flammable R-32 and R-32/134a (60/40 wt%) mixture. In this paper we evaluate the closed-vessel method to determine its precision and capability.