对R-22替代制冷剂R-407c的质量流量特性进行了测量，测量了多相流通过长径比为6.5至23.2的锐边短管孔的情况。所有试验条件都是冷凝温度在35.0°C（95°F）到51.7°C（125°F）之间，蒸发温度在-1.1°C（30°F）到10°C（50°F）之间的组合。短管孔12.70毫米（0.5英寸），19.05毫米（0.75英寸），和25.4毫米（1.0英寸）长度为1.09毫米（0.0432英寸）至1.94毫米（0.0763英寸）我们进行了测试。给出了下游压力、上游过冷/质量、上游压力、直径和长度对制冷剂通过给定节流孔几何结构的质量流量的影响。 R-407c数据适用于之前开发的半经验模型。并对模型的精度进行了讨论。单位:双引文:研讨会，ASHRAE交易，1998年，第104卷，pt。1A，旧金山

The mass flow characteristics of the R-22 replacement refrigerant R-407c were measured for multiphase flow through sharp-edged short-tube orifices with length-to-diameter ratios from 6.5 to 23.2. All test conditions were a combination of condensing temperatures ranging from 35.0°C (95°F) to 51.7°C (125°F) and evaporating temperatures ranging from -1.1°C (30°F) to 10°C (50°F). Short-tube orifices 12.70 mm (0.5 in.), 19.05 mm (0.75 in.), and 25.4 mm (1.0 in.) in length with diameters ranging from 1.09 mm (0.0432 in.) to 1.94 mm (0.0763 in.) were tested. The effects of downstream pressure, upstream subcooling/quality, upstream pressure, diameter, and length on the mass flow rate of refrigerant through a given orifice geometry were presented. The R-407c data were fit to a semi-empirical model developed previously. The accuracy of the model was also discussed.Units: Dual