Booster coils for air-heating applications using hot water. Available in variety of casing configurations…
DX Evaporator Coils
A DX evaporator coil is a direct-expansion refrigerant-to-air heat exchanger designed for air-side applications involving cooling, heating, and dehumidification. As refrigerant flows through the coil’s tubes, it absorbs heat from the passing airstream, providing efficient temperature and humidity control. DX evaporator coils are available with various circuiting options, as well as face-split and intertwined circuit designs, allowing the coil to be configured to meet specific system requirements and performance needs.
Tubes
Materials
- Copper
- Stainless Steel
- Cupro-Nickel
Sizes
- 3/8"
- 1/2"
- 5/8"
- 5/16"
Wall Thickness
- 3/8" & 1/2"
- • 0.016
- • 0.020
- 5/8"
- • 0.020
- • 0.025
- • 0.035
- • 0.049
- 5/16"
- • 0.016
Fins
Materials
- Aluminum
- Copper
- Stainless Steel
Specifications
- 3/8": 10-20 FPI
- 1/2": 6-16 FPI
- 5/8": 6-14 FPI
Fin Thickness
- Aluminum
- • 0.006
- • 0.008
- • 0.010
- Copper
- • 0.006
Headers
Materials
- Copper
- Cupro-Nickel
- Stainless Steel
Casing
Materials
- Galvanized Steel
- Stainless Steel
See Blank Coil Drawings
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What is a DX Evaporator Coil?
A DX evaporator coil (Direct Expansion evaporator coil) is a tube-and-fin heat exchanger used in air conditioning and refrigeration systems to remove heat from air. In a DX system, liquid refrigerant enters the evaporator coil and expands and evaporates inside the coil’s tubes, absorbing heat from the air passing over the coil. The cooled air is then circulated throughout the building, while the refrigerant leaves the coil as a low-pressure vapor and returns to the compressor. Common commercial applications for DX evaporator coils include rooftop HVAC units, air handlers, packaged HVAC equipment, walk-in coolers and refrigeration systems and industrial process cooling systems.
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Frequently Asked Questions
Replacement DX Evaporator Coils
Does Nationwide Coils provide TXV valves with their DX evaporator coils?
We do not supply TXVs with our DX Coils. We have distributor model numbers that are utilized to purchase a TXV at your local supplier.
What is the difference between a circuit face split DX evaporator coil and a circuit intertwined split DX Evaporator coil?
The difference between a face split coil and an intertwined coil is the ability to condition the entire air stream while utilizing the individual circuits. A face split circuit is a horizontal split across the fin length that can be designed for 50/50 capacity split or varying percentages. This means that if only one circuit is running you will have non conditioned air mixing with conditioned air. Intertwined circuits allow full conditioning of the air stream with independent circuits be utilized.
Do you need to know what refrigerant type is going to be used for the DX evaporator coil?
Yes, we need to know the refrigerant so that we can properly design the coil. If we are duplicating a DX coil, we need to know the refrigerant and specify the correct nozzle size for proper operation.
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