Steam Pressure before the Steam Trap
1) It is common to vent the condensate system to the atmosphere - where the gauge pressure is 0 psig.
A condensate system is vented to the surroundings and the pressure in the condensate return system after the steam traps is therefore 0 psig (atmospheric pressure). The steam pressure before the steam traps is 160 psig.
According the table above 16.8% of the condensate evaporates as flash steam passing the traps.
Note! Without any flash recovery system the energy in the flash steam will be lost to the surroundings.
If you prefer SI units - go here!
Flash steam generation - thermodynamic fundamentals, heat loss, energy recovery and more.
Steam & condensate systems- properties, capacities, pipe sizing, systems configuration and more.
Calculate flash steam generation in condensate pipe lines.
When flash steam is generated and vented to the surroundings a considerable amount of energy is lost
Tutorial to the basic physics behind flash steam generation
When condensate leaves the steam traps - flash steam is generated. Amount of flash steam generated at different pressures - kN/m2.
Steam table with sensible, latent and total heat, and specific volume at different gauge pressures and temperatures.
The amount of flash steam generated depends on steam pressure and pressure in the condensate lines.
Steam trap selection guide - Float & Thermostatic, Inverted Bucket, Bimetal Thermostatic, Impulse and Thermodynamic Disc steam traps.
A back pressure in a condensate systems will reduce steam trap capacity
Selection of steam traps and their safety factors.
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