Does the height of the stack affect the amount of draft?

The correct response is that the height of the stack does indeed affect the amount of draft. In a typical boiler system, a taller stack can create a stronger draft due to the increased buoyancy from the rising hot gases. The principles of thermodynamics dictate that as hot gases rise, they create a low-pressure area at the base of the stack, which pulls more air into the combustion chamber and enhances combustion efficiency.

It’s important to understand that while there are specific conditions that can influence draft, such as ambient temperature and wind speed, the general relationship between stack height and draft strength remains consistent. Shorter stacks may not generate sufficient draft to ensure complete combustion, leading to inefficiencies and potential safety hazards. Therefore, the statement that the height of the stack does not affect the amount of draft is inaccurate.