Vertical Thermosiphon Reboiler - Process Calculation

Based on standard reboiler engineering calculation sheets.

Input

Process fluid (tube side) Typical values for reference.

Condensation temperature °C

Density ρ_c kg/m³

Latent heat r_c kJ/kg

Thermal conductivity λ_c W/(m·K)

Viscosity μ_c mPa·s

Boiling temperature °C

Latent heat r_b kJ/kg

Liquid λ_b W/(m·K)

Liquid density ρ_b kg/m³

Liquid viscosity μ_b mPa·s

Specific heat C_pb kJ/(kg·K)

Vapor density ρ_v kg/m³

Vapor viscosity μ_v mPa·s

Surface tension σ_b N/m

Critical pressure P_c bar abs

Heat duty Q W

Assumed coefficient K W/(m²·K)

Mean temperature difference ΔTm (= Ts − tb) if left blank

Circulation flow rate Wt kg/s

Vapor fraction at outlet xe –

Subcooling of feed ΔTsub °C

Number of tubes NT (optional)

Tube outer diameter d₀ mm

Wall thickness δ mm

Tube length L m

Tube layout

Tube pitch t mm

Inlet pipe diameter Di mm

Outlet pipe diameter Do mm

Boiling-side fouling R_i m²·K/W

Condensation-side fouling R_o m²·K/W

Tube wall resistance R_w m²·K/W

Method: standard vertical thermosiphon reboiler rating.