1. Steam traps for OPC Applications

2. Main Applications Tracing Main distribution lines Turbines
Instrument tracing
Winterizing or fluids at non critical temperature ( <80°C)
Fluids at critical temperature (> 80°C)
Main distribution lines
Turbines
Process heat exchangers

3. Main Parameters Load Pressure : can be modulated or constant
Small ( 10 kg/h to 20 kg/h)
Medium ( 20 to 100 kg/h)
Large (>100 kg/h)
Pressure : can be modulated or constant
Low ( max 6 bar )
Medium ( max 20 bar)
High (> 20 bar)
Superheated
Back pressure
Nihil or atmospheric
Under pressure

4. Role of the Steam Traps Basically : To get rid of the condensate .
To eliminate air and carbon dioxide .
But also :
To prevent steam to escape into the condensate return .
And :
To make heating systems as efficient as possible .
To prevent their corrosion .
To get rid of impurities .

5. Working and Selection Criterions
Immediate evacuation of the condensate
Immediate reaction to load variations
Operation in presence of back pressure
Evacuation of non-condensible gases at start-up
Evacuation of non-condensible gases in stable service conditions
No sensitivity to adverse weather conditions
Resistance to water hammer
Long life
Energy conservation

6. Selection of Steam Traps for Tracing Applications
Ideally the steam traps should :
Work efficiently at low load (< 5 kg/h);
Work with high back pressure;
Be dirt resistant;
Be freeze resistant;
Fail in open position;
Be environment friendly;

7. Most used Steam Traps for Tracing Applications
Inverted bucket traps
Bimetallic traps
Thermodynamic traps
Wafer traps

8. Steam Tracing Applications
Instrumentation tracing :
Wafer capsule trap
Winterizing/non critical temperature tracing
First choice : Bi-Metallic trap (discharge to atmosphere)
Alternate choice : Inverted bucket trap(discharge to condensate return
Critical tracing :
First choice : Inverted bucket traps
Second choice : Bi Metallic traps

9. Main Distribution Lines
Ideally ,the steam trap should :
React immediately.
Not subcool or back up the condensate .
Be resistant to water hammer .
Be freeze resistant

10. Most used Steam Traps for Main Distribution Lines Applications
Inverted bucket traps
Bimetallic traps
Thermodynamic traps

11. Main Distribution Lines
Low pressure saturated pressure lines:
First choice : Inverted Bucket traps
Second choice : Thermodynamic traps
Medium pressure saturated pressure lines
High pressure saturated pressure lines
First choice : Inverted bucket trap ( <45 bar)
Alternative choice : Bi Metallic traps (> 45 bar)

12. Main Distribution Lines
High Pressure superheated Steam :
First choice : Bi Metallic traps

13. Ideally the steam traps should :
Heat exchangers
Ideally the steam traps should :
Make heating systems highly efficient
thus not allowing condensate subcooling .
Get rid of non-condensible gases .
Be resistant to water hammers .
Work with back pressure .

14. Process Heat Exchangers
Constant Steam Pressure
Modulating Steam Pressure
Vacuum

15. Most Used Steam Traps on Process Heat Exchangers Applications
Inverted Bucket Steam Traps (< 5 t/h)
Float & Thermostatic Steam Traps (> 5 T/h)
Steam Powered Pump Traps ( P1<P2)