Steam hammer and vibration often result from poor mixing and condensing of the steam. As temperature demand drops, steam pressure drops, lowering the steam velocity and potentially causing instability. Uncondensed steam bubbles will typically collapse when they come in contact with a cold pipe wall in the liquid piping. When these bubbles collapse, the slurry rushes in to fill the void and impacts
Water hammer can be defined as follows- Water hammer is a pressure surge or wave caused when a fluid (usually a liquid but sometimes also a gas) in motion is forced to stop or change direction suddenly (momentum change). As soon as steam leaves the boiler, it starts losing heat. As a result, steam stats condensing inside the pipe work.
What is Water Hammer/Steam Hammer - Forbes Marshall
Feb 09, 2021 · Run the boiler for a day, maybe 2. If the water in the gauge glass stays fairly steady then the water is returning to the boiler. If I drops significantly and you are positive there arent any leaks (steam or water) then you could have a return problem. 2014 Weil Mclain EG-40
Steam hammering is the phenomenon which occurs in steam charging in the pipeline while there is a presence of condensate in the line. This is because of sudden drop in pressure of steam as it comes in contact of condensate. Poor condensate drainage in pipeline leads to this steam hammering. How fast does water hammer travel?
Jun 25, 2014 · If the water in the boiler is clean, it will not surge over the top of the gauge glass. Check the pH of the water with pH paper. A good pH for a steam system ranges between seven and nine. If the pH gets to 11, the water will start to prime and foam and carry over into the system, causing water hammer.
What causes water hammer? And how do you stop it?
Eliminate Steam Hammer | Solutions to Steam Hammering
The Dangers of Water Hammer When steam is first supplied to steam distribution piping or steam-using equipment, a metallic and repetitive 'bang, bang, bang', or even sometimes a violent 'boom' accompanied by vibration may be heard. Most steam users will probably have experienced one of these at some time. Do you know what water hammer sounds like?