Refrigeration cycle
Refrigeration cycle
(OP)
I am trying to design refrigeration cycle with propylene refrigerant. I am planning to use heat exchanger for subcooling of liquid and superheating of vapor. I choose centrifugal compressor and water-cooled type of condenser. Evaporating temperature is -38C. It is needed to cool down light hydrocarbons from -26C to -35C. Could you please check the datas I wrote?
In Pressure-Enthaply
A - after condenser (0.62 MPa , 5C)
A* - after subcooling HE (0.62MPa, -10C)
B - after throttling valve (0.16MPa, -38C)
C - after evaporator (0.16 MPa, -38C)
C* - after superheating HE (0.16MPa, -14C)
D - after compressor (0.62 MPa, 50C)
E - condenser (0.62 MPa, 5C)
In Pressure-Enthaply
A - after condenser (0.62 MPa , 5C)
A* - after subcooling HE (0.62MPa, -10C)
B - after throttling valve (0.16MPa, -38C)
C - after evaporator (0.16 MPa, -38C)
C* - after superheating HE (0.16MPa, -14C)
D - after compressor (0.62 MPa, 50C)
E - condenser (0.62 MPa, 5C)





RE: Refrigeration cycle
RE: Refrigeration cycle
RE: Refrigeration cycle
yes, you can adopt 0.5 bar dP as initial guess for condenser and evaporator, then you can optimize...
RE: Refrigeration cycle
RE: Refrigeration cycle
RE: Refrigeration cycle
You should also look at the recycle case for this compressor to see how process parameters change, and that refrigeration capability is still maintained over the entire recycle flow range ( 0-100% recycle) - this will tell you what additional equipment is required / and how the recycle is to be enabled.