At any refrigeration capacity, the length of the capillary tube expansion valve for R134a and R717 is longer than that for R12. Because of the slow movement of the refrigerant in the smaller inner diameter tube, the required pressure drops take place slowly, ... For these situations, preliminary selection charts were constructed for the refrigerants so that the designer was able to use ... 1 1 1-120, McGraw-Hill Book Co., N.Y. APPENDIX A comparison of the enthalpy of the fluid entering 50.
|Title||:||Heat transfer with alternate refrigerants|
|Author||:||Harry J. Sauer, Thomas H. Kuehn, American Society of Mechanical Engineers. Heat Transfer Division|
|Publisher||:||Amer Society of Mechanical - 1993-09|