Steam separators separate water droplets from the steam coming from the boiler or line. If the condensate separated from the separator is measured, the inlet dryness of the steam can be estimated. This tool calculates dryness after separator and after pressure reduction, taking into account the separation efficiency.
Formulas
X(after separator) = (ṁvapor − water) / (ṁvapor − ṁseparating)
The pressure reduction effect is then calculated isenthalpically (IAPWS-IF97).
Example
If 60 kg of condensate is separated per hour from a 90% efficient separator in a 10 bar(g) line carrying 2,000 kg/h of steam, the inlet dryness is 96.7% and the dryness after the separator is 99.66%; when the steam is reduced to 9 bar(g), the dryness reaches 99.8%.
Use the steam dryness tool for pressure reduction to see the pressure reduction effect separately. To evaluate your steam system as a whole, you can take a look at our steam boiler guide and get a free quote for your project.