What is a Chiller Economizer 

On the Trane cvhe and cvhf, the economizer does not pull into the suction. It is pulling into either the inlet of the second stage wheel, or 3rd wheel. Depending on if it’s a cvhe or f. On the york screws, the economizer is ported about 1.3 or 1.4x of suction. No appreciable loss as you can introduce more gas after the suction portion without adding any more load to the motor.

Refrigeration racks use subcoolers quite often. Improving efficiency is the overall name of the game.

In screw compressors the subcooler is connected to the eco port of te compressor, with a different (higher) pressure than suction pressure. (This is where the efficiency gain is). How is that for centrifugal compressors?

Gree flexx hs those before liquid line to add subcooling.

What’s making the vapor rise to the top of the flash tank ?

The condenser is sending liquid refrigerant to the flash tank how is that liquid being turned into a gas ? & does it has something to do with pressurization or expansion and how ?

Sr ,may u help me, on york yciv Is there the High pressure cut out at system 1 is serial with system 3 on logic board

Is it ok to think chiller economisers are similar to hot gas bypass, by the concept of keeping a load on the chiller?