1. Inlet subcooling and system pressure are varied as parameters.

2. The capillary tube model in subcooling single-phase region and two-phase region was established, and the difference of mass flow rate is within 10% between the predicted and the measured values.

3. Outlet subcooling degree of reverse flow section should be in conformity with the requirement of HEI Standard.

4. Technology of refrigerant subcooling applying to conventional air-conditioning systems, can increase cooling system efficiency, it let us find out energy-saving potential.

5. By applying black box theory inlet pressure, inlet subcooling(), outlet pressure and valve opening are selected as influence factors to flow coefficient of electronic expansion valve (EEV).

6. The influence of the system pressure, inlet subcooling of the working medium and the heat input power to the heated section on the point of net vapor generation were investigated in the experiments.

7. In this paper, the influences of these factors on the optimum vacuum are analyzed firstly, and the calculation method of condensate subcooling degree and the dissolved oxygen in condensate are given.

8. Complex flow oscillations only occur in the case of high subcooling and may be divided into two types, regular and irregular complex flow oscillations.

9. Also, it is found and analysed that there exists inlet pressure fluctuation of coiled capillary tubes when the degree of subcooling is changed from one to another.

10. The effects of gap size, heat flux and inlet subcooling on the boiling incipience, flow pattern, heat transfer coefficient, flow instability and critical heat flux were analyzed and discussed.

11. It has many merits, such as can melt repeatedly, no subcooling or crystalline humor separation phenomenon during crystalline, cheap price, non-toxic, non-corrosiveness and so on.

12. The monitoring points in different position of the turbine stage have been calculated and analyzed, the Mach number, subcooling rate and the wetness fraction oscillate periodically.

13. The results showed that incipient boiling point decreased with increasing fluid subcooling and was independent of other factors.

14. For uniform heat flux surface,() the CHF approaches a constant at high subcooling region.

15. The minimum heat transfer area of the tube for subcooling and the optimal length range of the by-pass capillary tube were determined.

16. For uniform temperature surface, the CHF increases with the subcooling.

17. The influence of pressure on salt-removing effect indicated that the reaction time and the subcooling temperature submitted a relationship of power function under the same conditions.

18. The experimental results showed that the high heat flux portions of heat transfer curves shifted to the left with elevating fluid subcooling and was independent of other factors.

19. The mass flow rate varies with the inner diameter and the length of adiabatic capillary tubes, the degree of subcooling and the condensing temperature were investigated.

20. The article focuses on two ways to determine friction factors of the capliliary tube without backheating which inlet refrigerant is subcooling liquid.