Pipelines and Chimney Heights — Workspace by PMG Engineering

Steam Pipeline, Fluid Pipeline, DG Chimney Height and the two boiler Chimney Height calculators: inputs, method and gotchas.

What these calculators are for Two calculators size a pipe from a flow and a design velocity. Three calculate a chimney (stack) height: for a DG set, and for a boiler from its fuel firing rate or from its capacity. Steam Pipeline Inputs Media — Saturated, Superheated or Wet Steam. Steam flow rate — kg/sec or kg/hr. Operating pressure (gauge) — picked from 1 to 29 kg/cm²(g). How it is calculated Specific volume (m³/kg) is read from the steam table at the absolute pressure: (gauge + 1.0332) kg/cm² × 0.980665 = bar(a), interpolated between the table’s rows. Velocity is set by the media: Saturated 35 m/sec, Superheated 65 m/sec, Wet Steam 25 m/sec. Pipeline size (metres) = √(flow (kg/sec) × specific volume × 4 ÷ (3.14 × velocity)). Pipeline size (inches) = the same diameter × 39.37. Typical use and gotchas The result is the calculated internal diameter. Choose the next standard pipe size above it yourself. Pick the pressure your gauge reads, in kg/cm²(g); its unit is fixed. Example: 1 kg/s of saturated steam…