Steam assist fuel atomizers are converted to straight mechanical atomizers in order to __________.
• Steam-assisted atomization vs. mechanical atomization – what provides the atomizing energy in each case? • Boiler start-up conditions – when is steam available and when is it not? • Fuel economy vs. operational necessity – is this change mainly about efficiency or about being able to operate under certain conditions?
• Think about what happens when a boiler has been completely shut down. Do you have steam available to assist fuel atomization at that moment? • Which of the options describes a situation where you must be able to burn fuel before any steam is being generated? • Ask yourself whether atomizer design changes are primarily done to fine‑tune fuel economy, or to ensure the burner will function in specific operating scenarios.
• Identify which choice clearly depends on already having steam available – that one should be viewed critically in a cold condition. • Check which option directly relates to the ability to start and fire the boiler when no steam pressure exists yet. • Confirm that the selected option is about making atomization possible under low or zero steam pressure, not about routine fine‑tuning during normal steaming.
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