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REFRIGERATION ENGINEERING · CYCLE ANALYSIS

Refrigeration Cycle Analyzer & P‑h Diagram

Move from P‑T and SH/SC into a bounded single-stage vapor-compression cycle. HVACR Studio keeps blend dew/bubble states explicit, calculates energy relationships and plots the cycle on pressure–enthalpy coordinates.

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Four-state model
  1. State 1: compressor suction at evaporating dew pressure plus entered superheat.
  2. State 2s: isentropic discharge reference at condensing pressure.
  3. State 2: actual discharge from the entered compressor isentropic efficiency.
  4. State 3: liquid outlet at condensing bubble pressure minus entered subcooling.
  5. State 4: isenthalpic expansion to evaporating pressure.
  6. Theoretical COP = refrigerating effect ÷ compressor specific work. Capacity is optional and only then converts specific values to mass flow and kW duties.
Refrigerant P‑T →Field diagnostics →Flash economizer / vapor injection →Two-stage compression / intercooling →Advanced cycle comparison →Advanced P-h workspace →R717 ammonia cycle →R744 transcritical cycle →OEM compressor envelope review →OEM compressor performance map →
WHEN TO USE THIS TOOL

Useful during reference & conversion work.

  • Resolve unit-system differences quickly across calculations, drawings, schedules and vendor data.
  • Look up common formulas, constants and engineering reminders without leaving the HVACR workspace.
  • Reduce repeated manual conversion work while keeping the final engineering review with the user.
CONTINUE IN HVACR STUDIO
Browse all tools →
R717 / Ammonia Cycle & P-h

Analyze a bounded single-stage ammonia cycle with full-state properties, COP, mass flow and pressure-enthalpy visualization.

Open tool →Advanced P-h Engineering Workspace

Overlay compatible refrigeration architectures on one pressure-enthalpy workspace with explicit process, branch and mass-basis interpretation.

Open tool →Design vs Field Refrigeration Performance

Compare a refrigeration design cycle with stabilized field pressures, temperatures, SH/SC and optional measured capacity/compressor input while keeping model and measurement boundaries explicit.

Open tool →

Frequently asked questions

Why does the tool ask for evaporating dew temperature and condensing bubble temperature?

That keeps zeotropic blends physically explicit. Superheat starts from the dew-point saturated-vapor state, while subcooling starts from the bubble-point saturated-liquid state.

Does the calculated COP equal the equipment COP?

No. It is a refrigerant-cycle theoretical COP from the entered states and compressor isentropic efficiency. Motor losses, fans, pumps, controls, heat gains, pressure drops and compressor-map effects are outside this model.

Can the tool determine compressor efficiency?

No. Isentropic efficiency is an input from an applicable engineering/OEM basis. HVACR Studio does not infer compressor efficiency or envelope acceptance from a generic cycle.

Is the P-h view a full refrigerant chart?

It is a calculated pressure–enthalpy cycle view over the generated saturation dome. It does not reproduce every isotherm, entropy line or manufacturer chart feature.

Refrigeration Cycle Analyzer & P-h Diagram | HVACR Studio by LEAL