HeatXpert — Fin-Type Lube Oil Cooler

Drawing Geometry From: Fin_bundle_detail.pdf — extracted

Shell OD / ID	φ128.0 / ~124 mm
Tube OD (SS-316)	φ9.525 mm
Tube wall thickness	0.9 mm (assumed)
Number of tubes	48 nos
Tube pitch (60° triangular)	13.75 mm
Fin type	Expanded Aluminium
Fin thickness	0.25 mm
Fin pitch	18 FPI = 1.411 mm
Fin height (per side)	4.1 mm → OD_fin = 17.73 mm
Fin block / finned length	125 × 82 mm
Fin material k	205 W/m·K (aluminium)
Area enhancement	9.46× vs plain tube

Process Conditions & Geometry Inputs

🔴 Shell Side — Lube Oil (Hot)

Inlet T (°C)

Outlet T (°C)

Volume Flow (m³/h) [50 l/min = 3.0 m³/h]

Pressure (barg)

ISO VG Grade (auto-fills properties)

No. of baffles (N_b)

VG320 @ mean T: auto-fill from ASTM D341

Oil Properties (at mean temperature)

ρ (kg/m³)

Cp (J/kg·K)

k (W/m·K)

μ (cP)

μ_wall (cP) — at wall T

Shell fouling r_fo (×10⁻³)

ISO VG 68 at 56°C: ρ≈858, Cp≈2010, k≈0.131, μ≈22 cP. Enter viscosity at MEAN temp. μ_wall at cooler wall temp (higher μ). Manufacturer reference: VG68, M1=62.6→M2=50°C, 10 m³/h.

🔵 Tube Side — Coolant (Cold)

Coolant Fluid

Flow Input Mode

Inlet T (°C)

Outlet T (°C)

Volume Flow (m³/h)

Tube fouling r_fi (×10⁻³)

Ethylene Glycol 30% at 38°C: ρ=1036, Cp=3700, k=0.452, μ=1.70 cP (built-in). Manufacturer reference case: glycol 30%, 10 m³/h, fouling=0.

🔧 Geometry (from drawing — editable)

Tube OD (mm)

Tube wall (mm)

No. Tubes

Tube pitch (mm)

Bundle Length L (mm) (effective: 0.87×)

Shell ID (mm)

🌟 Fin Parameters (from drawing)

Fin Type

Fin height / Plate width (mm)

Fin thickness (mm)

Fin pitch (FPI — or fins/m for plate fins)

Fin k (W/m·K)

Tube layout angle (°)

Tube material k (W/m·K)

Tube passes (Np)

Calibration C_cal ⓘ

Enter process conditions and click RUN SIMULATION

Run simulation to see fin analysis