Where is the hottest part of a natural gas flame located?

The hottest part of a natural gas flame is typically found at the tip of the outer cone. This is due to the combustion process, where complete combustion occurs as the gases are fully mixed with oxygen and ignited. At this point, the flame has the highest temperature because it is where the fuel and oxygen reach their optimal mixing ratio, allowing for efficient burning and maximum energy release.

In contrast, the base of the inner cone is not as hot because it is where the gas is being initially ignited but has not yet fully reacted with the air. The middle of the outer cone, while hot, does not achieve the peak temperatures because the combustion is not as complete as at the tip, which is the end point of the flame. Lastly, the center of the flame is where the gaseous fuel is present in its most concentrated form, but it does not reach the temperatures found at the tip of the outer cone, where complete combustion occurs. Thus, the tip of the outer cone is associated with the highest heat levels within a natural gas flame.