Question

Which of the following best describes the purpose of higher capacity intermediate and high fire burner nozzles?

A. Done to allow for slower boiler warm-ups.
B. Implemented to decrease fuel consumption.
C. Intended to improve combustion efficiency.
D. Designed to reduce carbon emissions.

Answer 1

The purpose of higher capacity burner nozzles is to improve combustion efficiency by enhancing the mixing of fuel and air for a more effective energy transfer. The correct answer is option c.

Step-by-step explanation:

The purpose of higher capacity intermediate and high fire burner nozzles is C. Intended to improve combustion efficiency. These nozzles are designed to enhance the mixing of the fuel with air, enabling better combustion and a more efficient transfer of energy.

The concept of entrainment, where increased fluid speed creates low pressures that then entrain one fluid into another, plays a crucial role in achieving this improved efficiency. For example, a Bunsen burner uses an adjustable gas nozzle to entrain air for optimal combustion (Figure 12.5(a)).