🔍 Key Concepts

• Fuel oil atomization and why fine droplets are important for efficient combustion • How nozzle/atomizer design affects the breakup of liquid fuel into droplets • The role of fuel properties (like viscosity) on how easily the fuel can be atomized

💭 Think About

• Which option directly affects how finely the fuel can be broken into small droplets at the burner tip, regardless of furnace size? • Think about which factor would still be critical for good spray quality even if the furnace conditions (air pressure, size, temperature) were ideal. • Which choice combines both the mechanical aspect of spraying and the fluid characteristic that resists flow and breakup?

✅ Before You Answer

• Identify which options are about furnace conditions versus fuel spray formation at the burner tip. • Check which factor(s) control how easily the fuel stream can be broken into small droplets. • Verify which choice links both the hardware (atomizer) and the fuel’s flow characteristics (viscosity) rather than general furnace environment.