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[robalayon]

Hi everyone. I've to do an investigation project of methane liquefaction.

I propose do this using a 3 steps-cascade refrigeration system, and the refrigerants are Propane, Ethylane and Nitrogene. When I do the first step of the refrigeration system with Propane, and I simalute it in ProII,  it gives to me an irregular behavior, because when i put in the evaporator (2cell HX), i get that in the entrace of the compresor I have a mix of the refrigerant, besides the cold line in the 2cell HX, is doing the process with a constante temperature. That does have any sense.

So, does anyone know why I'm getting this? Your help will be useful.

 

PD: Sorry if I have any writing error.

[Bobby Strain]

You only need to specify that the refrigerant vapor from the exchanger is 1.0 fraction vapor. Don't use a temperature spec.

 

Bobby