A radiator air vent works by automatically releasing trapped air from the radiator, allowing it to fill with steam and heat efficiently.
Here's a breakdown of the process:
-
Air Expulsion: As steam enters the radiator, it forces any existing air out through the open air vent. This is crucial because air impedes the radiator's ability to heat effectively.
-
Steam Entry: The release of air creates a vacuum that pulls more steam into the vent and subsequently into the radiator, thus beginning the heating process.
-
Heat-Sensitive Valve Closure: The radiator air vent contains a heat-sensitive valve (also known as a radiator air valve). Once the steam reaches the vent, the heat causes the valve to close.
-
Steam Trapping: With the valve closed, steam is now trapped inside the radiator, enabling it to transfer heat to the room. According to research, the valve closes, trapping the steam in the radiator to heat the radiator.
In essence, the radiator air vent ensures that the radiator is filled primarily with steam and not air. This maximizes heating efficiency. If air becomes trapped again (which can happen over time), the vent will automatically open to release it, restarting the cycle.
