Correct application based steam trap selection on process equipment can save 7%-8% of steam consumption.
There is no such thing as a universal trap. Different types of steam traps are
suitable for different applications.
Thermodynamic traps are designed for applications where condensate load is less and intermittent and hence are ideally suited for main line drain application. Ball float traps should be selected for applications where the load is heavy and continuous, typically process equipment.
A correctly selected and sized trap reduces process time and saves energy. The
observations based on thousands of plant surveys and over 1000 audits indicate
that wrong trap selection is prevalent across most plants (see graph).
Application based steam trap selection can reduce steam consumption by 7-8%.
E.g. at a chemical plant in Gujarat, replacing thermodynamic traps with correctly
sized ball float traps reduced process time from 7hrs to 5hrs and steam
consumption by 8%.
Steam mains drain
Ensures effective condensate
discharge where condensate
load is less and intermittent
Jacketing and Tracing
Balance pressure trap
Sub cools condensate before
discharge, giving additional
heat to application thus saving
Non critical heating applications
with existing risk of water
Inverted bucket trap
Effective, but inefficient from
energy perspective and has
problems of air venting