Quote Originally Posted by mjcornelissen View Post

@josei.
This was very helpfull. They even didn't know about this paper.

In regard to comparison between CO2 / NH3 system and pure NH3 two stages system, I may refer to an study by J.W. Pillis(1), presented in 2009 IIAR Conference...
@mjcornelissen
You are welcome , please spread kindly the knowledge about nh3 refrigeration, its energy savings and environment protection. A lot of engineer's analisys I have available to decision makers. You can see into my profile, colaborations that I worked before.