PlantCalcKit
Home › Online tools › Condensate Recovery and Flash Steam
Online tool

Condensate Recovery and Flash Steam — online

How much steam do you flash off your condensate, how big must the flash vessel be, and what is a condensate return project worth?

Status
Loading
Loading…
Unlock results
3 runs — USD 9Monthly — USD 15Yearly — USD 99
Compare the options
Already have a licence key?
Sheet

Yellow cells are inputs; orange cells are choices; blue cells choose the unit. Select or hover over an input to see its help in the box below the toolbar. The sheet is the same as the Excel tool (USD 39) — the Guide, method and references are in the Excel file.

Input help: select an input to see what it means and which units it takes.

What this condensate recovery and flash steam calculator does

Flash fraction from pressure let-down, flash steam and residual condensate, flash vessel and vent condenser sizing basis, and the yearly value and payback of a condensate return project.

  • Flash fraction. From the pressure let-down for saturated or subcooled condensate, with IAPWS-IF97 steam properties built in as formulas.
  • Flash steam use. Flash steam to a low-pressure header, vented, or condensed in a vent condenser on the makeup water, with the heat lost when vented.
  • Flash vessel sizing basis. Steam volume flow, allowable velocity, diameter for steam and hold-up, height or length and the flash steam line size.
  • Vent condenser basis. Duty, the heat the makeup water can take, makeup flow needed and the temperature approach.
  • Value and payback. Fuel, water and chemicals saved by returning condensate, with gross and net annual saving, simple payback and return.
  • Current and proposed. Both cases side by side, what-if tables for the return and the vessel pressure, ranked findings and three charts.

How it was checked

178 recalculated runs against an independent IAPWS-IF97 Python model: every combination of the four method selectors, random and hand-picked inputs, US and British units and 66 edge cases; largest deviation 4e-12 in the same units.

Related

Questions

Is the condensate recovery and flash steam calculator free?

You can enter and check all your data free. The full results, findings and printable sheet are unlocked with a 3-run pack (USD 9), a monthly subscription to all online tools (USD 15) or a yearly one (USD 99).

Are the results the same as the Excel tool?

Yes. The online tool runs the formulas of the Condensate Recovery and Flash Steam Excel workbook and was checked cell by cell against the Excel file.