🔄 Rotary Twin-Screw Compressor Sizer

Size industrial rotary twin-screw compressors: built-in volume ratio Vi matching, over/under-compression losses, oil injection cooling, and shaft power demand.

⚡ Fortran 90 Engine Double Precision (IEEE 754) ✓ ISO / ASME Validated
📊 Solver Telemetry ● ACTIVE
👁️ Consultations 31
⚡ Calculs faits 24
💾 Téléchargements 353 📦 Code Fortran 5.2 KB
📅 Mise en service Jun 2026
⏱️ Latence < 1 ms
⚡ Outils & Rapports :
💾 Télécharger Fortran 90

🔄 Intermeshing Male/Female Helical Screw Rotors & Oil Spray

Real-time visual simulation: Suction pocket trapping, continuous screw meshing compression, and oil cooling

📝 Configuration & Presets

💨 Industrial Air (8.5 bar) ❄️ Ammonia Cold Booster 🔥 Biogas 16 bar Injection 🌿 Propane R290 Chiller
💨 Gas Medium & Suction
🎯 Displacement & Discharge
⚙️ Built-in Vi & Oil Cooling
Twin-Screw Compressor Formulation:
• Built-in Pressure Ratio: Πi = Vik
• Indicator Work: Wind = [k/(k−1)]·P1·V1·[Vik−1−1] + (P2−Πi·P1)·(V1/Vi) [kW]
• Shaft Power: Pshaft = Wind / 0.92 [kW]
• Oil Cooling: controls discharge temperature to ~75–90°C.

📊 Performance Results

Configure inputs and click Compute to view results.

📘 Calculation Methodology & Screw Compressor Standards

Built-in Volume Ratio ($V_i$) & Indicator Losses

Twin screw compressors have a fixed internal volume ratio $V_i$. If the system pressure ratio differs from $V_i^k$, thermodynamic over-compression or under-compression indicator losses occur upon discharge port opening.

Oil Injection & Temperature Control

Oil flooded into the compression pocket seals rotor clearances and absorbs over 80% of the compression work, keeping discharge gas temperatures well below $100^\circ\text{C}$.

Key Engineering Assumptions

  • ISO 1217 positive displacement compressor standards.
  • API 619 oil-injected rotary screw compressor design.
  • Widely used in industrial plant air systems, ammonia cold storage, and biogas boosting.