PRODUCTS
INCORPORATING COLD CHAIN
Improved pump suction Reduce your defrost time
KSB Group has
developed a special
impeller to further
improve the suction
characteristics of its
Movitec multistage
high-pressure pumps.
The new impeller is
particularly useful
in applications with
critical inlet conditions,
as well as applications
in which the pump
is required to take in
water from low-lying
tanks or at higher
temperatures.
These conditions
are not always suitable
for standard pumps,
as pressure drop in the intake area can
cause cavitation in the first pump stage,
resulting in excessive wear of pump
parts or motor bearings as well as a
reduced service life of the pump due
to damaged parts and an unbalanced
hydraulic system.
The new impeller features a modified
inlet diameter, vanes that allow a
slightly diagonal throughflow, and a
newly designed stage casing, all of
which serve to substantially improve the
pump’s NPSH curve. Defrosting of evaporators in a
typical cold store facility can use
as much as 21% of total energy
consumed. Any method that can
decrease the consumption and at
the same time increase efficiency
of the coolers, will have a profound
impact on energy savings.
When the evaporator reaches
its defrost cycle, the FabricAir
defrost duct collapses, effectively
sealing the outlet. This ensures
maximum heat in the evaporator
and minimal or no heat gain in
the cooled space. Which means
quicker room temperature
recovery time and increased
cooler efficiency. Clever use of
materials prevents water droplets
caused by the defrost cycle from
freezing on the fabric surface.
FabricAir claims its defrost ducts
can reduce defrost time by 10 to
50% — saving energy and increasing
cooler efficiency. It boasts an
The multistage centrifugal pumps from
KSB’s Movitec range are designed
for handling fluids such as water,
coolants, condensate, and mineral
oils. They are ideal for a wide variety
of applications ranging from industrial
boiler feed installations in steam circuits,
recirculation and firefighting systems,
cooling water circuits and washing
plants, to pressure boosting in general
process applications.
For more information,
contact +27 (0) 11 876 5600.
impressive payback time of only three
months. Other benefits include: a
low pressure drop, it preserves stored
products better, prevents room
temperature fluctuations, and offers
longer throw lengths.
For more information,
contact +27 (0) 11 674 4011.
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