Abstract:
Sadatomi and Kawahara developed an efficient, i.e., energysaving-
type, multi-fluid mixer, which can generate mists (or
micro-bubbles) by introducing pressurized air (or water) alone
because water (or air) as a source of mists (or micro-bubbles)
are automatically sucked by a vacuum pressure arisen inside the
mixer. In the present paper, firstly, the hydraulic performance
of the mixer in mists generation case is introduced by referring
to our previous papers. Secondly, various applications of mists,
such as air cooling in greenhouses and pigsty, adsorptions of
black smoke in the chimney of a boiler burning Refuse Paper &
Plastic Fuel (RPF), and adsorption of carbon dioxide (CO2) in
room are described. In the CO2 adsorption tests, mists were
sprayed for five minutes by our multi-fluid mixer, commercial
single-fluid and twin-fluid atomizers in turn in a test room, and
time variations of CO2 concentration in air after the
introduction of CO2 in the room were measured at the bottom
of the room to compare the CO2 adsorption rates for the
respective cases. In addition, diameters of droplets captured in
a small oil pond were measured with a microscope. As a result,
superiority of our multi-fluid mixer was confirmed, because
40% droplets were 20 to 40 m in diameter, and the CO2
adsorption rate by the mists with our multi-fluid mixer was
25 % larger than that with the commercial ones.
Description:
Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016.
