Deltech ES-4000 - Cycling Refrigerated Air Dryer

ES Series "Energy Saver" cycling dryers use a simple refrigeration system to chill a thermal storage fluid that possesses exceptional heat transfer characteristics.

Much like your refrigerator at home, the refrigeration compressor automatically starts-and-stops as needed. This delivers 33°F -39°F dew point control while using the absolute minimum amount of electricity.

ES Series dryers feature:
• Energy efficient cycling operation matches energy costs to actual plant air demands

• Text display delivers Percentage-of-Energy savings, Process Control Temperature, Preset or Adjustable Dew Point value, and more

• Auto-restart logic circuit calculates and displays "minutes-torestart" text while compressor warms-up to prevent damage from liquid slugging

Dimensions & Specifications

If you have questions on how to properly select a compressed air dryer, contact our knowledgeable customer service toll-free: 866-650-1937 or send us an email request.

¹ Rated Flow Capacity - Conditions for rating dryers are in accordance with CAGI (Compressed Air and Gas Institute) Standard ADF100 working conditions: inlet air at 100 psig (7 bar) and 100oF
(38oC) saturated, ambient air at 100oF (38oC), cooling water at 85oF (29oC), operating on 60Hz power supply. At rated conditions, outlet pressure dew points is 38oF (3oC).
² At 35oF (2oC) evaporator and 100oF (38oC) ambient
³ R22 refrigerant standard
⁴ Dimensions and weights are for reference only. Request certified drawings for construction purposes.
⁵ Weight shown is approximate for 38oF dew point water-cooled models only

Operating Conditions Models ES 2500-ES 20000

1. Consistent Dew Points

Non-fouling, smooth copper tubes, and shell type heat exchangers, deliver 33°F - 39°F dew points and low pressure drop, Refrigerant R22 comes standard on all Models

2. Energy Saving EMC Controller

Text display delivers Percentage-of-Energy savings, Process Control Temperature, Preset or Adjustable Dew Point value, and more

3. Superior Moisture Removal

Mechanical separator designed to remove 99+% of condensed moisture. NLD-24 demand drains are standard to maximize energy efficiency.

4. Thermal Fluid Storage

Cold energy is stored and released as needed to save energy

5. Automatic Energy Savings

Compressor uses no energy once optimal thermal fluid storage system temperature is achieved

Performance, Energy Savings, Returns-on-Investment
Deltech energy saving "cycling" type refrigerated dryers leverage technology that has served generations of compressed air users. Energy savings mirror plant air demands to maintain a 33°F - 39°F range of dew point integrity. High-capacity, ES Series "Energy Saving Refrigerated" cycling dryers, proudly carry on the Deltech tradition of delivering reliability, consistent dew point control and, clean, dry compressed air. Pay the absolute minimum for electricity to realize fast returns-on-investment.

Thermal Fluid Storage System Advantage
High Capacity ES Series dryers use a Thermal Fluid Storage system to save energy. Cold energy is stored and released as needed to offer tremendous energy savings under part-load conditions. Operational simplicity is similar to your home refrigerator. The refrigeration compressor is turned "on" and "off" (cycled), to match the actual air demand in your facility. Savings on electricity are provided in linear proportion to air demands.

How the ES Series Works

Environmentally friendly NO CFC refrigerant is compressed and circulated through the refrigeration system. Cold liquid energy is transferred from the refrigerant to the thermal fluid in the Thermal Fluid Storage heat exchanger. Here, the large volume of thermal fluid is prepared and controlled. Temperature sensing thermocouple outputs are used to turn the refrigeration compressor on or off to maintain a 1°F hysteresis. A small pump circulates the cold thermal fluid in a loop.

Saturated incoming compressed air is quickly chilled in the air-to-air heat exchanger (A) by the cold compressed air as it exits the evaporator (B). Here, the cold, dry air is reheated to prevent pipeline sweating and reduce compressor energy before exiting the dryer. Next, an automatic drain (C1) removes the condensate. In the evaporator, the air temperature is reduced to that of the cold thermal fluid delivered from thermal fluid storage (D). Finally, moisture separator (E) lowers the velocity and mechanically separates the condensate from the air stream. A second automatic drain (C2) removes the condensate. The air-to-air heat exchanger re-heats the air and clean, dry compressed air exits the dryer.

Energy Management Controller (EMC)
The EMC delivers a wealth of control and system monitoring capabilities. EMC can inform you of system operating status, reinforce your decision to purchase an ES Series dryer with actual energy savings displayed or, even advise you of trouble with warnings/alarms.

EMC features include:
    • Power-off timer (counts and displays the seconds without ower)
    • Auto restart/Warm up timer (energizes crankcase heater then, calculates and displays
      minutes-until-restart once power is restored)
    • Cumulative run-time/compressor-on time recording (includes umulative time reset
      function to help track maintenance intervals)

Deltech ES Series Brochure: 

Brochure