5) The convective heat transfer coefficient and the total
mass transfer coefficient between sprinkling water and
air-water interface
The process of heat transfer between the sprinkling water
and the air is the most complicated and variation process in
the whole heat transfer process. There exists not only the
setting function of mass diffuse and heat transfer between two
phase fluids, but also the flowing boundary; not only the
evaporation of water film surface, but also the heat and mass
transfer between water drop and air tube middle, so compared
with the heat transfer between water mist and air inside air
conditioning sprinkling room, the difference of heat transfer
between the sprinkling water and the air is large, the water-gas
ratio is not the main effect factor in the heat transfer process,
and it is difficult to express with adaptable mathematical
description, at present, there does not exit accepted
experiential function, it is the most controversial part in the
process of evaporative condensing cooled heat transfer.