Stability limits and design

The practicality of understanding stability limits is uniquely obvious when one considers the design of Bunsen tubes and cooking stoves using gaseous fuels. 

In the design of a Bunsen burner, it is desirable to have the maximum range of volumetric flow without encountering stability problems. What, then, is the 

FIGURE 4.35 Typical curve of the gradient of flashback as a function of equivalence ratio j . The value oF I is for natural gas. 

FIGURE 4.37 Seated and lifted flame regimes for Bunsen-type burners. 

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The established correlations and laws of atomization and evaporation are directly applicable to the various combustion problems of ignition delay, performance, stability limits, and design. 

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