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I was searching for Mollier chart for Nitrogen and came across this tool which appears to be free: http://en.ipu.dk/Indhold/refrigeration-and-energy-... (scroll to the page bottom for download links)

According to the developers: "CoolPack is a collection of simulation models for refrigeration systems. The models each have a specific purpose e.g. cycle analysis, dimensioning of main components, energy analysis and optimization... It can perform:

Cycle analysis (process design)
System dimensioning
System simulation
Component calculations
Analysis of operating conditions
Transient simulation (cooling of an object/room)
Refrigerant calculations (property plots, thermodynamic & transport properties, comparison of refrigerants)
Life cycle cost (LCC)

It has generated the N2 Mollier chart in a matter of seconds (see attached). Double-click the icon "Refrigeration Utilities" in the vertical menu on the left side of the window and choose the fluid and data ranges. Very cool stuff.

Process Engineer, MSChE

RE: CoolPack

"Very cool stuff."

I see what you did there.

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