However, the heat transfer soon transits to
nucleate boiling after the outer temperature of CT exceeding the boiling point.
Nucleate boiling was significant in R32 and R410A for the whole quality range.
Micro- and nanostructures on a dull surface increase the number of nucleation sites, reduce the onset of
nucleate boiling, and change a single-phase region into a two-phase region, all of which contribute to
nucleate boiling [10].
Bubble growth is mainly controlled by the momentum exchange between liquid and bubble after
nucleate boiling being started on heated surface then the bubble growth is due to evaporation through liquid vapor interface.
But being no expert, I asked Bob Critoph, engineering professor at the University of Warwick, if EnergySaver could achieve these savings through more efficient "
nucleate boiling".
The contributors investigate radiative heat transfer across molten mold flux film during the continuous casting of steels, the influence of microstructures on
nucleate boiling processes, carbon nanotubes suspended in ethylene glycol yield nanofluids, waste energy recovery in a diesel engine exhaust system, the efficacy of greenhouse gas forcing and solar forcing, and energy balance within an unmanned air vehicle wing fuel tank.
These range from 2,000 to 7,000 Btuh/[ft.sup.2]/deg-F (10 to 40 W/[m.sup.2]K) in the
nucleate boiling regime.
Research on bubble growth has been carried out systemically based on the
nucleate boiling phenomena [12-15].
They believed that
nucleate boiling heat transfer was the main contribution, particularly at the low quality region.