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Hankison
HHD Series Refrigerated Air Dryers Improve
Productivity
Since 1948, people around the globe have relied on
Hankison to deliver the right solutions to efficiently
meet the needs of today's applications for compressed
air treatment. HHD Series non-cycling refrigerated
compressed air dryers offer the right combination of
technology and simplicity to keep your air system at a
dry +3°C pressure dew point, from 20 through 800 m3/h.
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| Gain
Efficiency |
Air-powered products and processes operate best
with clean and dry compressed air. Productivity
improves. Rejects decrease. Maintenance personnel are
able to be proactive and work from their schedule. The
entire facility runs smoothly and contributes to
financial stability and competitiveness.
Built-in
Durability and
Reliability
All HHD Series dryers are built for durability, in
a space-saving design. Sturdy sheet steel is formed and
protected by an epoxy-based powder coat finish. Reliable
reciprocating refrigeration systems use environmentally
friendly R-134a refrigerant. R-134a is known for its
ability to maintain stable temperatures to protect the
integrity of the +3°C pressure dew point. HHD Series can
handle the pressure.
Dry
Compressed Air - Pure &
Simple
Research indicates that many customers want
reliability and dry compressed air at an affordable
price. No fancy bells and whistles - just dry air, pure
and simple. The HHD Series non-cycling dryers were
designed to meet these demands.
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| Models
HHD 21 through HHD
101 |
Warm saturated air enters the Evaporator
(A) where it is cooled by refrigerant being controlled
by a Constant Pressure Expansion Valve (B). Water vapor
condenses into a liquid for removal at the moisture
separator (C) by an Automatic Drain (D). The cold, dry
air is reheated as it passes through the Reheater (E).
This prevents pipeline sweating. The Static Condenser
(F) eliminates the need for a cooling fan and simplifies
the system.
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| Models
HHD 151 through HHD
800 |
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Warm saturated air enters the air-to-air heat
exchanger (A) where it is precooled by the outgoing
chilled air, and then passes through the
air-to-refrigerant (evaporator) heat exchanger (B) where
it is further cooled by the refrigeration system. Water
vapor condenses into liquid droplets to be removed by
the Moisture Separator (C) then, discharged from the
dryer by an automatic drain (D). Chilled dry air returns
through the air-to-air heat exchanger (A) where it is
reheated before exiting the dryer.
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| HHD
Series - Standard
Features |
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• Easy to install package saves time. Simply
connect the pipes and plug in the power cord.
• Adapts to system needs without complicated
controls. Fully automatic operation saves money.
• Every unit comes pre-assembled with quality
components. Long service life.
• Steady +3°C pressure dew point. Ensures maximum
moisture removal every day.
• On/off switch illuminates when compressor is on
• At-a-glance control panel dew point indication
verifies performance (HHD 31 - HHD
800)
HHD
Series - Models through 100
m3/h
• Static condenser recycles waste heat to eliminate
cold, sweaty pipes
• Integral Moisture Separator
• Timer operated drain with isolation
valve/strainer (float drain on HHD 21)
• On/off switch illuminates when compressor is
on
HHD
Series - Models 150 to 800
m3/h
• Integral 304 stainless steel heat exchanger, mesh
demister and, moisture separator for long life
• Timer operated drain includes isolation
valve/strainer to protect valve from rust and
scale
• Panel mounted drain timer controls (HHD 400 -
800)
• LED style dew point indicator (HHD 400 -
800)
• Panel filter captures ambient dirt and dust to
keep condenser clean
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| COLDWAVE™
REFRIGERATED COMPRESSED AIR
DRYERS |
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Hankison ColdWave™ refrigerated dryers feature our
most advanced heat exchanger technology. Being the
global leader in compressed air treatment is what
continues to set the Hankison brand apart. Since L.E.
Hankison patented the Condensifilter™, (forerunner to
the refrigerated air dryer) in 1943, Hankison engineers
have set the industry standard for refrigerated dryer
technology. ColdWave™ heralds the next generation of
Hankison high performance refrigerated dryers designed
for quality and
reliability.
COLDWAVE
DRYERS REDUCE OPERATING
COSTS
Manufacturing
Energy Efficient
Solutions.
For more than half-a-century, Hankison quality,
performance and reliability set the standard for global
compressed air treatment products. The tradition
continues. Industry leading ColdWave™ Technology infuses
the latest generation of refrigerated dryers with rugged
durability, energyefficiency and long service life. It’s
no wonder that leaders of industry specify Hankison
products to protect their critical products and
processes from contaminants.
Our mission is to reduce the operating expenditures
of compressed air users by removing impurities from
their air systems. Utilizing environmentally friendly
refrigerants, Hankison ColdWave™ dryers deliver stable
ISO8573.1 Quality Class 4 and Class 5 pressure dew
points and, remove solid particulates, and oil from
compressed air systems across all operating flows.
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| ISO
8573.1 CLASS 4 AND CLASS 5 DEW POINT SPECIFICATIONS SAVE
ENERGY |
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All compressed air systems must be evaluated
individually to develop a specification for compressed
air treatment. The majority of compressed air users
benefit from Quality Class 4 and Class 5 moisture
control due to the low overall cost of operation and low
initial purchase price. This technology is ideal for
pressure dew point requirements above freezing. Systems
with more stringent dew point requirements benefit from
desiccant or membrane technologies that offer dew points
to ISO8573.1 Quality Class 1.
DEW
POINT CONTROL IMPROVES
PRODUCTIVITY
At 1700 m3/h, the difference between a 3°C and 16°C
pressure dew point can result in 360 l of liquid water
going downstream…every week. That is why Hankison
strongly recommends high-performance products for
maximum contamination removal at the lowest overall
operating cost.
DEVELOP
AN AIR DEMAND PROFILE TO SAVE
ENERGY
Compressed air demand in most plants fluctuates
significantly. Hankison offers compressed air users who
specify ISO 8573.1 Quality Class 4 and Class 5 pressure
dew points, two refrigerated drying technologies to
choose from. High performance HHDplus Series and HDS
Series dryers include integral 3 micron Grade 9
filtration to deliver high-quality air. Add the integral
0.008 ppm (0.01 mg/m3) w/w Grade 5 Cold Coalescing
filtration option to gain premium air quality, simplify
installation and benefit from true, Air Treatment
Stations. Both optimize energy saving opportunities for
various compressed air demand profiles. The chart below
will help you determine which solution is best for your
application
MATCH
AIR DEMAND PROFILES WITH THE OPTIMUM COLDWAVE SOLUTION
TO SAVE
ENERGY
ColdWave
HDS Series, 1500 - 10800 m3/h Energy Saving Air
Treatment
• Optimize energy savings for variable air demand
profiles that range from 0% to 100% capacity.
• Digital control PLC allows user to track
cumulative energy savings.
• Digital Evaporator coupled with an innovative
Digital Scroll refrigeration system.
ColdWave
HHDplus Series, 211 - 10800 m3/h Continuous Demand Air
Treatment
• Rugged reliability and value for steady demand
profiles with 75% to 100% total average air flows.
• Energy Management Monitor (emm™) PLC comes with
“schedule mode” which turns dryer on and off to optimize
energy savings in one or two shift operations. (Models
HHDp 381 and larger
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MD
Series
The
next generation in membrane technology
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