It is necessary
to define the most common terms in the cooling tower
operation.
i.
Range is the
difference in temperature between the inlet
hot water and the outlet cold water.
For 40°C inlet and 35°C outlet,
the range is 5°C.
ii.
Approach is
the difference in temperature between the outlet
cold water and the wet bulb of the entering
air.
For 35°C water out let and 27°C wet
bulb temperature, the approach is 8°C.
iii.
Circulating
water rate is the quantity of hot water entering
the tower.
iv.
Fills which are placed within the
tower to effect heat and mass transfer between
the circulating water and the air flowing through
the tower.
v.
Casing is
a vertical enclosing sidewall which surrounds
the fill and retains the water within the tower.
vi.
Distribution
system begins with the inlet connection for
distribution of circulating hot water within
the tower to the points, where it comes in contact
with air.
vii.
Eliminator
is an assembly which serves to remove entrained
moisture from the discharged air.
