https://www.youtube.com/watch?v=9lm2ubpOoL4
mechanical vapor compression produces
the energy used and the evaporation
process by up to 90 percent compared
with conventional systems it works by
reusing the heat energy contained in the
vapor this energy would otherwise be
wasted in a typical falling film
evaporation plant the feet liquid enters
the top of a vertical chamber called a
calandria the liquid is dispersed across
a large number of vertical tubes as it
flows downwards it tends to form a film
on the inside of the tube between the
top and bottom sections of the calandria
that is a sealed area where the tubes
pass through a jacket of high
temperature vapor this section acts as a
heat exchanger as the hot vapor
condenses on the outside of the tubes it
releases latent heat which raises the
temperature of the feed liquid in the
tubes
by the time the feed liquid leaves the
bottom of the tube much of the water has
been evaporated off leaving a
concentrated viscous liquid the water
which has been evaporated off leaves the
tubers vapor in the bottom section of
the calandria some of the concentrated
liquid gathers and can be drawn off the
hot mixture passes into a cooler chamber
called the separator where more of a
concentrated liquid falls to the bottom
to be drawn off and the vapor rises to
the top this vapor now contains most of
the energy that was initially fed into
the system the XFL turbofan sucks the
vapor from the separator and tree
compresses it raising the pressure and
so increasing the temperature to the
point where the vapor can once again be
used as a source of heat the xvalue 'not
is an extremely robust gas tight
turbofan ideally suited to the pressures
temperatures and volumes of the NVC
evaporation process
at its heart is an ultra high speed
impeller with a tip velocity of over
1,000 kilometres per hour faster than a
speed of a jet airliner the expelled
rotor probably has the highest tip
velocity of any welded impeller ever
manufactured
the reheated vapor can then be fed back
into the calandria to provide the heat
energy required to evaporate more feed
liquid as it passes down the tubes the
mechanical vapor compression process is
a highly energy efficient and
cost-effective way of retaining and
reusing the latent heat contained in the
vapor energy that would otherwise be
wasted once the process has been started
and brought up to temperature the only
energy input required is the electricity
to drive the eggs felt turbofan