๐ 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.
โก Fortran 90 Engine
Double Precision (IEEE 754)
โ ISO / ASME Validated
Heat Exchangers
๐ Solver Telemetry
โ ACTIVE
๐๏ธ Views
42
โก Solves
35
๐พ Downloads
480
๐ฆ Fortran Code
4.1 KB
๐
Released
Jun 2026
โฑ๏ธ Latency
< 1 ms
๐ Archimedean Spiral Flow Channels & Centrifugal Secondary Vortices
Real-time visual simulation: Counterflow spiral paths (hot red inside-out, cold blue outside-in)๐ Configuration & Presets
๐ฉ Digested Sewage Sludge
๐พ Distillery Stillage Slurry
๐ชต Pulp Mill Black Liquor
๐งช Viscous Polymer Resin
Archimedean Spiral Formulation:
โข Dean Number: De = Re ยท โ(Dh / 2 Rฬ)
โข Curvature Nusselt: Nuspiral = Nustraight ยท โ(1 + 1.77 Dh/Rฬ)
โข Heat Duty: Qฬ = U ยท A ยท LMTD [kW]
โข Self-Cleaning Effect: Single continuous curved channel prevents dead zones.
โข Dean Number: De = Re ยท โ(Dh / 2 Rฬ)
โข Curvature Nusselt: Nuspiral = Nustraight ยท โ(1 + 1.77 Dh/Rฬ)
โข Heat Duty: Qฬ = U ยท A ยท LMTD [kW]
โข Self-Cleaning Effect: Single continuous curved channel prevents dead zones.
๐ Performance Results
Configure inputs and click Compute to view results.
๐ 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.