Air Purge in Installations
1- Ventilation from Steam Installations
Air is seen in two ways in the steam installation. The first one is the air that is already in the installation when the first operation is in operation, the second is the air going to the boiler in the condensate water by penetrating into the installation when the steam is cut for any reason.
The evacuation of the air in the steam installation is very important. Since the air is not condensing, it will be discharged from the installation only by a discharge method. The air that cannot be discharged will prevent the desired temperatures in the installation and will lead to corrosion and shorten the life of the installation.
In the main steam lines, the air is discharged from the end of the installation line. The installation of the air thrower is entirely related to where the air thrower is to be installed, or even where the steam comes from. In the case where the steam is supplied from the bottom, it is mounted on top because the air is collected on top. In the case where the steam is given from the top, the air is mounted on the bottom and it is mounted on the bottom.
The air thrower in the steam installation must operate with thermostatic condensate logic. It should not be confused with air throwers used in water installations. Since there is only air and water in the plumbing system, an air pusher with a float system can be released. However, an air thrower must be used in the steam installation depending on the temperature and which interrupts the discharge when the steam temperature is reached.
2- Ventilation from Water Installations
The air and gases in the water installations considerably reduce the heat transfer efficiency. The heat transfer effected by the 1 mm air layer and the effect of a 13 m thick copper wall on heat transfer are equivalent.
In addition, the air and gas accumulated in the water installation significantly reduces the installation life, but also causes noise. It may even cause system crashes and may cause deterioration of armature groups such as valves, meters in the installation.
In order to avoid such situations, the use of automatic air vents is of great importance. Although it is not a special place to use automatic air vents, it can be used at the points where the air can accumulate and at every point where you want to evacuate the air. ( See ... https://en.viraisi.com/viravent-deaerator )