Hello,
I have red a lot of posts, increasing my knowledge of NH3 systems.
Nonetheless, I am dealing with the dimensioning of a NH3 flooded evaporator.
I have two design evaporating temperatures:
The first one is @ 18 F, with air @ 33F
While the second one is @ -13 F with air @ 33F
I am utilizing a software that provides me the pressure drop.
I was wondering if someone could suggest me which is the most suitable pressure drop value I have to dimension the evaporator or some literature to refer to concerning this topic.

Thanks in advance !