🌀 Spiral Heat Exchanger Sizer (SHE)
Design and size spiral heat exchangers (Alfa Laval SHE Type 1): thermal duty (kW), overall U-value, Dean number, channel spacing, and pressure drop.
⚡ Fortran 90 Engine
Double Precision (IEEE 754)
✓ ISO / ASME Validated
📊 Solver Telemetry
● ACTIVE
👁️ Consultations
42
⚡ Calculs faits
35
💾 Téléchargements
356
📦 Code Fortran
4.1 KB
📅 Mise en service
Jun 2026
⏱️ Latence
< 1 ms
🌀 Archimedean Spiral Flow Channels & Centrifugal Secondary Vortices
Real-time visual simulation: Counterflow spiral paths (hot red inside-out, cold blue outside-in)📝 Configuration & Presets
💩 Digested Sewage Sludge
🌾 Distillery Stillage Slurry
🪵 Pulp Mill Black Liquor
🧪 Viscous Polymer Resin
Archimedean Spiral Formulation:
• Dean Number: De = Re · √(Dh / 2 R̄)
• Curvature Nusselt: Nuspiral = Nustraight · √(1 + 1.77 Dh/R̄)
• Heat Duty: Q̇ = U · A · LMTD [kW]
• Self-Cleaning Effect: Single continuous curved channel prevents dead zones.
• Dean Number: De = Re · √(Dh / 2 R̄)
• Curvature Nusselt: Nuspiral = Nustraight · √(1 + 1.77 Dh/R̄)
• Heat Duty: Q̇ = U · A · LMTD [kW]
• Self-Cleaning Effect: Single continuous curved channel prevents dead zones.
📊 Performance Results
Configure inputs and click Compute to view results.
📘 Calculation Methodology & Spiral Heat Exchanger Standards
Self-Cleaning Single-Channel Geometry
Spiral heat exchangers consist of two concentric curved channels. If local fouling begins, cross-section narrows, locally accelerating fluid velocity and scrubbing deposits away.
Centrifugal Secondary Dean Vortices
Continuous curvature generates centrifugal Dean vortices that disrupt the thermal boundary layer, boosting heat transfer coefficients by $30 - 60\%$ compared to straight ducts.
Key Engineering Assumptions
- True pure counter-current flow configuration (Alfa Laval Type 1).
- Minton spiral friction factor and Nusselt curvature corrections.
- Applicable to wastewater sludge, brewery wort, distillery spent wash, and paper pulp black liquor.