🚰 Riser Hydraulics (Lockhart-Martinelli Two-Phase Flow, Low Delta-P <1.2 PSI)

Two-Phase Thermosyphon Riser & Downcomer Calculator

Model two-phase vapor riser velocity ($v_{vapor} = 8 ext{ to }15 ext{ m/s}$) and single-phase liquid downcomer return hydraulics using the Lockhart-Martinelli correlation: keep total loop flow resistance $<1.2 ext{ PSI}$, driving high-rate natural recirculation without vapor lock, and server uptime profits.

1. Project & Operating Inputs

Vapor Mass Flow Generated (kg / s e.g. 1.85 kg/s Dielectric Vapor)

Vapor Riser Pipe Diameter (Inches e.g. 3.5" 316SS Vapor Header)

Customer Bid Price for Supplied Riser/Downcomer Manifold ($)

Polished 316SS Vacuum Risers, Downcomer Check Valves, Thermal Insulation ($)

2. Financial Breakdown & Yield

LOCKHART-MARTINELLI TWO-PHASE FLOW

Turnkey Thermosyphon Header Manifold Package Profit

Two-Phase Hydraulic Engineering Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost