🔄 Scraped Surface Heat Exchanger Sizer (SSHE)
Size and design Scraped Surface Heat Exchangers (SSHE Votator / Contherm): Trommelen heat transfer model, rotational Reynolds number, product outlet temp, and shaft motor power.
⚡ Fortran 90 Engine
Double Precision (IEEE 754)
✓ ISO / ASME Validated
📊 Solver Telemetry
● ACTIVE
👁️ Consultations
18
⚡ Calculs faits
17
💾 Téléchargements
258
📦 Code Fortran
4.1 KB
📅 Mise en service
Jun 2026
⏱️ Latence
< 1 ms
🔄 SSHE Rotating Scraper Blades & Boundary Layer Scraping
Real-time visual simulation: High-speed scraper blades wiping viscous boundary layer against the cooling jacket📝 Configuration & Presets
🍦 Ice Cream Slush Freezer
🍅 Tomato Paste SSHE Cooler
🧈 Margarine Fat Crystallizer
🍲 Starch Gelatin Cooker
Trommelen & Beek SSHE Formulation:
• Rotational Reynolds: Rer = ρ · (N/60) · Di² / μ
• Scraped Nusselt: Nu = 0.16 · Rer0.50 · Pr0.33 · Nb0.33
• Scraped Film Coeff: hp = Nu · k / Di [W/(m²·K)]
• Total Heat Duty: Q̇ = ṁ · cp · ΔT + ṁ · Δhlatent [kW].
• Rotational Reynolds: Rer = ρ · (N/60) · Di² / μ
• Scraped Nusselt: Nu = 0.16 · Rer0.50 · Pr0.33 · Nb0.33
• Scraped Film Coeff: hp = Nu · k / Di [W/(m²·K)]
• Total Heat Duty: Q̇ = ṁ · cp · ΔT + ṁ · Δhlatent [kW].
📊 SSHE Performance Results
Configure inputs and click Compute to view results.
📘 Calculation Methodology & SSHE Standards
Continuous Boundary Layer Renewal
Spring-loaded or centrifugal scraper blades continuously scrape the heat exchange cylinder wall, preventing fouling and burning of sticky, heat-sensitive or crystallizing food and chemical products.
Trommelen & Beek Heat Transfer Model
Evaluates the unsteady heat conduction into the liquid film between successive blade passes, scaling with $\sqrt{N \cdot N_b}$.
Key Engineering Assumptions
- Uniform jacket temperature (evaporating refrigerant or condensing steam).
- Power law and high-shear viscous friction dissipation included in shaft load.
- Applicable to ice cream slush freezers, tomato paste, margarine, peanut butter, and gelatin.