毛细管已被广泛用作商用制冷机的膨胀阀，尤其是在固定冷负荷运行时，即家用冰箱和窗式空调。一个迭代过程产生了管子的长度，因此在管子出口处预测质量。迭代程序将被一个计算机程序所取代，该程序的子程序和功能语句为热力学和物理性质表。该程序是用FORTRAN语言为主机编写的。该项目是制冷与空调课程学生项目的高潮。单位:双引文:研讨会，ASHRAE交易，1987年，第93卷，第。田纳西州纳什维尔2号

The capillary tube has been widely used as the expansion valve in a commercial refrigeration machine, especially with the fixed cooling load operation, namely the household refrigerators and the window type air conditioners. An iterative procedure yields the length of the tube and consequently the quality is predicted at the exit of the tube. The iterative procedure will be replaced by a computer program with the thermodynamic and physical property tables as the subroutines and function statement of the program. The program is written in FORTRAN for a main frame computer. The program is the culmination of the student programs in the course, Refrigeration and Air-Conditioning.Units: Dual