How do I stop steam radiators and pipes from BANGING?? the steam pipes leading to several of my radiators explosion loudly after...
the steam pipes leading to several of my radiators explosion loudly after the steam subsides, how do i stop this awful noise???
Answers: It depends if you own Water or steam heat. You shouldn't hold to bleed the lines for air unless you hold a water system. Water systems are relatively closed systems while Steam bake systems inherently have nouns in them. They are regulated by the pressure release valve. Everything equal, Steam heat is going to be louder than hose. The reason for this is that the pressure and warmth changes between an sitting steam system and the active steam system are much greater next a water system. When the system kick on and recirculates hot steam into pipes or a radiator that has much cooler vapor within it the temperature difference can cause the pipes to begin hammering. When the 230 plus scope steam hits the colder zone the velocity of the steam entering the radiator is reduced, but the pressure pushing behind it does not drop until an equilibrium heat is reached in the zone. With the increased volume of the radiator and the drop in the heat you have a drop surrounded by the velocity of the steam. To assure that the steam continues at a velocity that will reach the other zone the piping exiting the radiator will ussually be reduced in diameter to increase the velocity of the steam at the reduced heat.(when it comes to piping-volume and velocity are inversely proportional) The Hammering of the pipes as the steam enters the zone is controlled by the release spout and the fact that the radiator have a larger volume than the pipe that is supplying the steam. The apology you are experiencing the hammering after the release valve have been activate is that the steam is being forced into the pipe exiting the radiator as it head to the next zone. Once again the discharge pipe have a much smaller volume and is cooler than the radiator.(Increasing velocity with a great heat difference) The difference is that the pipe does not have a pressure release to relieve the pressure until it reach the next zone. The pressure exerted on the piping cause the noise you are experiencing.
I bet the racket is more pronounced when you kick up the thermostat 5 or 6 degree. Try to avoid drastic temperature change. Maintaining a constaint temperature will decline the internal temperature change of the system.
Have a Mechanical engineer that specializes within Hydronic heating appropriate a look at the system. Have him look at your release valves they may not be functioning as intended. He would also be capable of tell you if you own any improperly sized piping. Hammering is habitually caused by inadequately sized pipes. Remember a too small a pipe increases the velocity which increases the pressure which causes the rumble.
I'm sure it's more than you wanted to know. Sometimes I find carried away. Good luck!!!
Make sure that you bleed every radiator of all nouns. The expasion tank might own to be replaced also.