| Open Specific Steady-State Devices>Refrigeration/Heat Pump |   |
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 Consider
a two-stage R-12 refrigeration system operating between 0.15 MPa and 1
MPa. The refrigerant leaves the condenser as saturated liquid and is throttled
to a flash chamber operating at 0.4 MPa. The vapor from the flash chamber
is mixed with the refrigerant leaving the low-pressure compressor and the
mixture is compressed by the high-pressure compressor to the condenser
pressure. The liquid in the flash chamber is throttled to the evaporator
pressure where the cooling load is handled through evaporation. Assume
the refrigerant leaves the evaporator and mixer as saturated vapor.
What-If Scenario: How do the answers change if the intermediate pressure is increased to 0.6 MPa? Solution: Step-by-step
instructions as well as the TEST-Code can be found in the Tutorial>Daemons>OpenCycle>Practice
page. An image of the Analysis panel is shown below.
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