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Two-stage cascade (−100 °C)
Cascade refrigerationClosed loopsCryogenics
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Propylene + ethylene cascade: the ethylene loop condenses inside a heat exchanger against the evaporating propylene loop and serves a −100 °C load. Two coupled closed cycles. From the ChemSep casebook (Refrigeration_2-Stage-100C).
The flowsheet
The solved topology — every unit op's real duty, conversion, or split, read straight off a genuine converged solve.
The stream table
Every stream's flow, temperature, pressure, and composition — real converged numbers, not placeholders.
See it live
Open this exact flowsheet in the workspace, already solved — tweak a spec and re-run.