❄️ Transcritical CO2 Refrigeration (R744)
Model commercial transcritical CO2 (R744) refrigeration: optimal gas cooler high-side pressure, cooling COP, compressor power demand, and heat pump heating capacity.
⚡ Fortran 90 Engine
Double Precision (IEEE 754)
✓ ISO / ASME Validated
📊 Solver Telemetry
● ACTIVE
👁️ Consultations
28
⚡ Calculs faits
25
💾 Téléchargements
212
📦 Code Fortran
11.4 KB
📅 Mise en service
Jun 2026
⏱️ Latence
< 1 ms
❄️ Transcritical R744 CO2 Refrigeration & Gas Cooler Loop
Real-time visual simulation: Supercritical gas cooling above critical point (73.8 bar) with optimal high pressure control📝 Configuration & Presets
🛒 Supermarket MT Pack (-8°C)
🧊 Commercial LT Freezer (-32°C)
♨️ EcoCute Water Heat Pump (+5°C)
🏭 Industrial Cold Store (-15°C)
Transcritical CO2 (R744) Formulation:
• Optimal High Pressure: Popt ≈ 2.6 · Tgc,out + 7.5 [bar]
• Cooling Capacity: Q̇cool = ṁ · (h1 − h4) [kW]
• Compressor Power: Ẇelec = ṁ · (h2 − h1) [kW]
• Cooling COP: COPcool = Q̇cool / Ẇelec
• Optimal High Pressure: Popt ≈ 2.6 · Tgc,out + 7.5 [bar]
• Cooling Capacity: Q̇cool = ṁ · (h1 − h4) [kW]
• Compressor Power: Ẇelec = ṁ · (h2 − h1) [kW]
• Cooling COP: COPcool = Q̇cool / Ẇelec
📊 R744 Cycle Results
Configure inputs and click Compute to view results.
📘 Calculation Methodology & Transcritical CO2 Standards
Optimal High-Side Pressure
Unlike subcritical cycles where condensing pressure is fixed by temperature, supercritical $CO_2$ gas cooling exhibits a distinct maximum $COP$ at an optimum pressure $P_{opt} \approx 2.6 T_{gc,out} + 7.5\,\text{bar}$.
Environmental Advantage (ODP = 0, GWP = 1)
Natural refrigerant R744 replaces HFCs/HFOs with zero ozone depletion potential and GWP = 1, complying with EU F-Gas and Kigali amendments.
Key Engineering Assumptions
- Supercritical gas cooling without phase change in the high-pressure heat exchanger.
- Isenthalpic expansion through the high-pressure valve (HPV).
- Applicable to commercial supermarket refrigeration, transport cooling, and EcoCute heat pumps.