How does the wick function in a gravity-fed oil burner?

The wick in a gravity-fed oil burner operates by utilizing capillary action to draw oil from the tank to the burner. This is a critical function, as the wick is designed to absorb oil and transport it to the combustion area where it can be ignited. Capillary action occurs when liquid moves within a narrow space due to intermolecular forces, which allows the oil to rise through the wick against the force of gravity.

In gravity-fed systems, there is no need for pumps or pressurization, as the natural physical properties of the wick facilitate the consistent flow of oil. This method is particularly efficient for ensuring that the burner receives a steady supply of fuel without the complexities associated with pressure systems. The wick's ability to maintain a steady flow of oil is essential for the proper functioning of the burner and the uniformity of the combustion process.