使用直径为12 mm的观察镜获得了五种制冷剂（R123、R134a、R502、R402A和R404A）的两相流流型数据。Taitel和Dukler（1976年）以及Hashizume（1983年）的现有流型图不能很好地表示数据，而VDI图成功地识别了除雾流以外的流型。水平流沸腾关联中用于确定全湿壁流和部分湿壁流之间阈值的方法被证明是不可靠的。关键词:1995年，测量，计算，流体流动，热流，制冷剂，更换，水平，管道，精度，R123，R134a，R502，R402A，R404A，可视化，比较引用:研讨会，ASHRAE Trans。1995年，第101卷，第2部分

Two-phase flow pattern data were obtained with 12-mm-bore sight glasses for five refrigerants - R123, R134a, R502, R402A, and R404A. The existing flow pattern maps of Taitel and Dukler (1976) and Hashizume (1983) poorly represented the data, while, with the exception of mist flows, the VDI map identified the flow patterns successfully. Methods used in horizontal flow boiling correlations to determine the threshold between all wet wall and partially wet wall flows were shown to be unreliable.KEYWORDS: year 1995, measuring, calculating, fluid flow, heat flow, refrigerants, replacing, horizontal, tubes, accuracy, R123, R134a, R502, R402A, R404A, visualising, comparing