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RPC Series

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Product Description

The RPC Series with Standard Energy Saving System

The ESS (Energy Saving System) is capable of transferring heat energy through a change of state. During the thermal change process, the media’s temperature remains constant—known as latent heat transfer. Latent heat transfer occurs when the media changes from a solid to liquid or a liquid to solid. The state of the media is monitored by a temperature probe that automatically engages the refrigeration compressor to power on or off according to varying inlet load profiles. Because the ESS is capable of storing and releasing heat energy without a change in temperature, the refrigerant compressor cycles less frequently and saves energy.

The dryer requires fewer components than conventional cycling designs and does not require a cooling media circulation pump, storage tank and glycol to refrigerant heat exchanger. All cooling is accomplished in the 3-in-1 heat exchanger.

The media within the ESS is non-toxic, does not require replacement and maintains its thermal properties regardless of age. In the frozen state the media will not thermally expand, maintaining the long-term integrity of the heat exchanger assembly.

RPC Energy Saving Series 75–550 scfm
The RPC Series is the ideal solution to reliably and economically dry compressed air. The innovative technology does not require a recirculating pump and associated piping. This results in a simpler, more energy efficient design.

1) Stainless steel brazed plate 3-in-1 heat exchanger (patent-pending), with Energy Saving System

■ The ESS thermal reservoir operates at a precise temperature to deliver a stable pressure dew point
■ Smooth, non-fouling stainless steel surfaces promote low resistance to flow, optimizing air system efficiency

2) No-air-loss, demand drain efficiently removes condensate without loss of compressed air

■Condensate drain lines terminate at discharge connections conveniently located on the side of the dryer
■ Failure-to-discharge alarm on the operator interface enhances system reliability

3) High-efficiency, up-flow aluminum air-cooled condenser

■ Pulls ambient air through the condenser and releases out the top of the dryer condenser
■ Provides cooler condensing air and greater efficiency

4) Reliable, semi-hermetic refrigerant compressor

■ Environmentally-friendly, globally-accepted refrigerants
■ Rugged design, for long-term operation

5) Controller with LCD display provides ease-ofmonitoring and operating status

■ RPC75 & RPC100
–Energy savings (%), dryer operating time, refrigeration compressor operating time, active fault message and dew point status
■ RPC150 to RPC550
–Energy saving (%), dryer operating time, refrigeration compressor operating time, active fault message dew point status
–USB connection port to download operating data and upgrade firmware
–Remote monitoring capability – RS485 communications port

Energy Saving Sustainability
The RPC Series lowers air system power costs and improves productivity by matching power consumption to compressed air demand. In a typical manufacturing facility, up to 30% of electricity consumed is for generating and treating compressed air. To reduce total cost of operation and qualify for utility company incentive programs, proper air treatment equipment selection and application is required.

Linear Energy Savings
Compressed air load profiles in most manufacturing facilities fluctuate. The RPC Series provides cost-effective energy savings by matching electrical power consumed in direct proportion to air demand. Linear load matching is achieved from 0% up to 100% demand. Non-cycling dryers operate with the refrigeration compressor running continuously, regardless of inlet load conditions. Minimal energy savings are realized from 100% down to 0% inlet air load.

Load Matching Performance
RPC Series dryers automatically power (on/off) the refrigeration compressor in response to inlet load conditions. As the inlet air load is reduced, the power requirement to dry the air is matched in proportion to the demand. For example, at 60% inlet air load, a non-cycling dryer consumes 96% of the full load power consumption, a 4% energy savings. By comparison, at 60% inlet air load, the RPC Series consumes only 60 % of the full load power, a 40% energy savings.

1) The RPC Series utilizes an ESS that allows for heat to transfer medium between the refrigeration and compressed air circuits that serves as a reservoir for thermal storage.

2) The thermal reservoir is comprised of a patent-pending heat exchanger filled with a media that efficiently transfers heat energy through a “change of state”.

3) The refrigeration circuit operates to cool down the medium until it forms into a solid at which time the refrigeration system powers off.

4) As the compressed air enters the ESS, the media absorbs heat from the airstream and begins to melt the media at a constant temperature.

5) When most of the media has turned to liquid the refrigeration system powers on to again cool down the media turning it back into a solid.

6) This process repeats as required to meet the corresponding compressed air load on the RPC Series dryer.