Follow us on Have any questions? Just call us 952-935-2345

News & Events

How Important is Correct Slope and Condensate Drainage on Atmospheric Steam Dispersion Piping


How Important is Correct Slope and Condensate Drainage on Atmospheric Steam Dispersion Piping

When using an Atmospheric Humidifier it is important to manage the condensate in the dispersion piping properly. If condensate in the dispersion run is not drained sufficiently, back pressure can be created, leading to problems with the operation of the humidifier.

For all Armstrong Humidifiers, such as the Armstrong HC-6000 series, EHU-800, CS-10 or GFH, the slope of the dispersion piping should be 1" per 12". The illustration shows the importance of dispersion pipe slope. If the condensate is not removed efficiently, condensate could build up creating a reduced cross section of pipe for the opposing steam to flow which can cause back pressure at the humidifier.

Even on a system with correct slope there can still be a build up of condensate for dispersion runs that are longer than 20 equivalent feet. In these instances, it is recommend a drain be added in the middle of the dispersion run to eliminate excessive condensate.

Symptoms of back pressure are often level control related. Too much pressure on the outlet of the humidifier causes a pressure difference between the level control measurement canister and the main steam generation tank. Sometimes this can be fixed by the addition of a fill cup extension kit, but often times, the dispersion piping issues need to be corrected. On some humidifiers there may be an issue with back pressure forcing water down the overflow into the drain.

If you have questions about proper installation of Armstrong Humidifiers or other steam equipment, contact Campbell-Sevey. (Information from Armstrong International)

No comments (Add your own)

Add a New Comment


code
 

Comment Guidelines: No HTML is allowed. Off-topic or inappropriate comments will be edited or deleted. Thanks.

Subscribe to our CS Update Newsletter: Send Me The Latest News

952-935-2345  emailmain@campbell-sevey.com  address15350 Minnetonka Blvd., Minnetonka, MN 55345

Products We Carry

GENERATION
  • Hot Water Boilers
  • Watertube Steam Boilers
  • Firetube Steam Boilers
  • Deaerators
  • Heat Recovery Steam Generators (HRSG’s)
  • Automatic Recirculation Valves
  • Economizers
  • Gas-Fired Water Heaters
  • Gas-Fired Humidifiers
  • Boiler/Generator Flue Stacks
  • Continuous Emissions Monitors (CEMS)
DISTRIBUTION
  • Pressure Reducing Valves
  • Safety and Relief Valves
  • Control Valves
  • Pressure Independent Control Valves
  • Expansion Joints, Guides, Anchors
  • Flash Tanks
  • Flow Meters
  • Balancing Valves
  • Check Valves
  • Separators
  • Pumps
  • Pressure Booster Systems
  • Piston Valves
UTILIZATION
  • Heating/Cooling Coils
  • Plate and Frame Heat Exchangers
  • Shell and Tube Exchangers
  • Water Heaters
  • Steam Humidifiers
  • Vacuum Systems
  • Condensers
  • Steam Traps
  • Wireless Steam Trap Monitors
  • Tube Bundles
  • Direct Gas-Fired Space Heaters
  • Direct Gas-Fired Make-Up Air Units
  • Unit Heaters
  • Strainers
  • Air Vents
  • Liquid Drainers
  • Heat Transfer Packages
  • Digital Water Mixing Valves
  • Air Cooled Condensers/Dry Coolers
  • Steam Filters
RETURN
  • Electric Condensate Pumps
  • Steam/Air-Powered Condensate Pumps
  • Packaged Condensate Pump Skids