Finned Tube Calculation
Calculate heat transfer capacity & generate finned tube specifications
? Input Parameters
?️ Tube & Fin Material
Carbon Steel
k=50 · ρ=7850
304 Stainless
k=16.2 · ρ=7930
Aluminum
k=205 · ρ=2700
316 Stainless
k=16.3 · ρ=8000
Copper
k=401 · ρ=8960
? Base Tube Size (Presets)
Φ25×2.5
Φ32×3.0
Φ38×3.0
Φ50×3.5
Φ19×2.0
Φ16×2.0
? Fin Dimensions
?️ Operating Conditions
? Calculation Formulas
① Heat Transfer Area
Atube = π × dₒ × L
Number of fins: n = L / sf
Afin_total = n × [π/2·((dₒ+2hf)²−dₒ²) + π·(dₒ+2hf)·tf]
Atotal = Atube_exposed + Afin_total
② LMTD (Log Mean Temp. Difference)
ΔT₁ = Th,in − Tc,out
ΔT₂ = Th,out − Tc,in
LMTD = (ΔT₁−ΔT₂) / ln(ΔT₁/ΔT₂)
③ Overall Heat Transfer Coefficient
Rwall = ln(dₒ/di) / (2π × kmaterial × L)
Nu = 0.023 × Re0.8 × Pr0.4
K = 1 / (1/hₒ + Rw·Aₒ + Aₒ/(hi·Ai))
④ Heat Transfer Rate
Q = K × Atotal × LMTD
Unit: Watts (W) or Kilowatts (kW)
? Selected Material Properties
Density ρ = 2700 kg/m³
Thermal Conductivity k = 205 W/(m·K)
* Higher k → better heat transfer
Density ρ = 2700 kg/m³
Thermal Conductivity k = 205 W/(m·K)
* Higher k → better heat transfer
? Results & Finned Tube Specs
Click “CALCULATE NOW”
to see heat transfer results
& finned tube specifications