Boiling liquids minimum heat flux

Equation (2-113) means that any cylindrical cavity for any liquid-solid combination under a given pressure has a minimum heat flux below which boiling will not be stable, and a transition between natural convection and stable nucleate boiling (bumping) is always observed. 

In most, if not all, storage situations, the heat flow through the insulation and tank walls into the liquid is a much more gentle process with a heat flux of typically less than 100 W/m for LNG. This level of heat flux is some two orders of magnitude less than the minimum of 10,000 W/m required for heterogeneous nucleate boiling. It can only be released from the liquid by surface evaporation, with no boiling at all. 

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