  Injecting a non-dissolvable gas into a saturated liquid results in
sub-cooling of the liquid due to forced evaporation into the bubble. Previous
studies assumed the rate of evaporation of liquid into the bubble to be
independent of the degree of sub-cooling. In our study we quantify the bubble
growth by direct observation using high speed imaging and prove that this
hypothesis is not true. A phenomenological model of the bubble growth as a
function of the degree of sub-cooling is developed and we find excellent
agreement between the measurements and theory. This bubble cooling process is
employed in cooling a liquid. By identification of all heat flows, we can well
describe the cool down curve using bubble cooling. Bubble cooling provides an
alternative cooling method for liquids without the use of complicated cooling
techniques.
