Pressure drop across nozzle

[NiHaoMike]

What would be the pressure drop over a 1" piece of 0.023" capillary tube in a 1/2 ton R290 system? That piece of capillary tube is right after the expansion valve and it is used as the nozzle in an ejector.

[Brian_UK]

Try capillary sizing software......
http://www.danfoss.com/United_Kingdom/BusinessAreas/Refrigeration+and+Air+Conditioning/Product+Selection+Tools+Details/DanCap.htm