Gardner Denver RCD cycling refrigerated dryers provide stable 33–39°F pressure dew point control with automatic
energy savings operation. Cold energy storage system is precision engineered to guarantee that the refrigeration compressor uses no energy for at least 10 minutes during
every cycle.
The controller continuously monitors the cold energy solution temperature to maintain the dew point selected and maximize energy efficiency. Ample solution volume and
temperature controls ensure the continuous delivery of dry compressed air long after the refrigeration compressor has turned off.
Voltage: 208–230/1/60 available on RCD200–600 models. 208–230/3/60 additional charge on RCD3250–12000 models. 575/3/60 additional
charge on all models.
De-rate dryer capacity by 17% for 50 Hz.
Standard dryer enclosures and controls meet NEMA1.
For 208–230/3/60 incoming power applications, purchase 230/1/60 and simply drop a leg at installation (200–600 only.)
Models 200–600: Maximum operating pressure 225 psig; Maximum inlet temperature 120°F
Models 3250–12000: Maximum operating pressure 150 psig; Maximum inlet temperature 130°F; ASME pressure vessel; UL listed refrigeration and electrical
components; CSA listed electrical components
Gardner Denver DGH Series
Heatless Desiccant Dryers were
designed to help you meet
your goals. Customizable
performance technology is
integrated into our standard
product so it can be tailored to
benefit your specific critical
compressed air drying
application. Now, you have the
liberty to personalize the
performance of the standard
product to adapt to your
specific needs.
Pressure drop at rated flow is less than 5 psi
Standard voltages: Controllers automatically identify and adapt the controller:
Basic: 100-120V/1ph/5-60Hz;
Standard and Energy Savings controller: 100-240V/1ph/50-60Hz & 12-24 VDC
NEMA 4 Standard Feature with Standard and Energy Savings controllers
Inlet flows are established in accordance with CAGI Standard ADF-200: Dual Stage Regenerative
Desiccant Compressed Air Dryers-Methods for Testing and Rating. Conditions for rating dryers are:
inlet pressure of 100 psig, inlet temperature saturated at 100°F.
Average purge flow rate is the amount of purge air used during the regeneration portion of the
purge cycle (purge/repressurization valve open) plus the volume of air used to repressurize the
tower after the purge/repressurization valve closes averaged over the cycle time. At 100 psig, the
average purge rate is: 14.4% (13.7% for regeneration + 0.7% for repressurization) of rated inlet
flow for dryers operating on a 10 minute cycle; 15.5% (13.7% for regeneration + 1.8% for
repressurization) for dryers on a 4 minute cycle.
Outlet Flow: To determine flow of air available at outlet of dryer, subtract purge flow from inlet flow.
DPB Series - Global Air Treatment Dryers (500 – 4300 scfm) The DPB Series process design offers the end user the opportunities to significantly reduce the energy costs associated
with achieving a reliable -40°F (-40°C) pressure dew point. This is achieved by eliminating or reducing purge air
requirements (compressed air utilized to regenerate desiccant beds) typical of other desiccant dryer designs.
Inlet Flow capacities have been established at an inlet pressure of 100 psig (7 kgf/cm2), and a saturated inlet
temperature at 100°F (38°C). To determine maximum inlet flow at other conditions, multiply the inlet flow from the
Specifications Table by the multiplier from Table 1 that corresponds to your operating conditions.
Dew Point: Outlet pressure dew point at rated inlet conditions of 100 psig (7 kgf/cm2) and 100°F (38°C) and 70°F (21°C)
atmospheric dew point is -40°F (-40°C). Dew point varies slightly at other conditions. Consult factory to determine exact outlet pressure dew point at your operating conditions.
Outlet Temperature at normal rated conditions (after temperature spike) is 127°F (53°C). Outlet temperature
varies depending on inlet temperature and pressure.
Consult factory to determine exact outlet temperature at your operating conditions.
Available voltages: 460V/3ph/60Hz, NEMA 4 enclosure
Non-standard conditions contact customer service.
RNC Series refrigerated air dryers are engineered to benefit you today and tomorrow from the tradition of durability that is Gardner Denver.
Quality components and engineering excellence meld to ensure you of a stable 38°F +/-4°F
pressure dew point. These exclusive compressed air preparation packages combine reliability, cutting-edge design, and innovative packaging into a single space saving unit. The air quality delivered from an RNC Series dryer may define the difference between moderate and superior results from your plant’s processes or systems.
RNC Series dryers benefit you with:
1. Four levels of Intelligence Controller (I-Controller) packages to allow you to
customize the RNC Series dryers to meet your specific requirements.
2. Select Heat Exchanger arrangements to ensure you get the right combination
of value and efficiency in every size.
This secures your investment today and tomorrow with energy efficiency.
3. Combination Separator/Filter that incorporates our 99% efficient 3 micron
Grade B elements. This ensures you of consistent water removal (especially under low flow conditions).
Many years ago, Gardner Denver set the standard for energy efficient rotary screw air compressors. The goal was to combine the rugged simplicity of the screw compressor with the energy efficiency of the big old reciprocating compressors. We called the new technology the TurnValve™ and introduced it with the Electra-Saver® Air Compressors. Now, almost half a century later, the legendary Electra-Saver® is still one of the most energy efficient designs your money can buy for plants with changing air demands.
Today, Gardner Denver continues that tradition of providing energy saving solutions to help you increase profits and reduce power costs. Challenges for energy efficiency and dew point stability are answered with a technological breakthrough in energy efficient refrigerated air dryer design. We call this energy saver the RSD Series and it is unlike any energy efficient compressed air dryer technology you have ever seen. Only the RSD Series Digital Scroll Refrigerated Air Dryers offer you.
Dew Point Stability: 38°F from 0%-100% of rated flow
Energy Savings: up to 91% power reduction
Simplicity: less moving parts for maximum reliability
Notes:
a. All models utilize R404a refrigerant with Digital Scroll compressors.
b. All models utilize a standard electric demand drain.
c. Second electric demand drain is standard when optional integrated Grade E oil removal filter is selected.
d. Maximum Operating Pressure 200 psig (14 bar), Maximum inlet temperature: 120°F (49°C).
All models are UL/CSA certified.
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