Condenser Coil

Emergent Coils provides custom condenser coils for commercial and industrial applications built to your specifications.

Design
Specifications
Performance
Sizing

Condenser Coil Design

Condenser coils are used to reject heat from an air-conditioning or refrigeration system. Sometimes they are used with the intention to heat air streams. They are one of the four main components in the refrigeration or air-conditioning cycle. Refrigerant enters as a superheated gas and condenses in the coil tubes as the air is heated. The refrigerant leaves the coil as a liquid.

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Some typical applications for condenser coils:

Heat Rejection
Reheat
Comfort Heating

Condenser Coils come in a variety of shapes and sizes, but there are some properties that are common in most condenser coils:

Rows

Since condenser coils typically have a large surface area and a fairly high air to refrigerant temperature difference, only a few rows are generally required. We expect to see a condenser coil somewhere between 1 and 3 rows deep.
Tube Diameter

The condenser coil must be able to handle a significant amount of internal pressure. With R-410a, working pressures can be as high as 600psia. Smaller tube diameters can handle this kind of pressure more reliably. Also, smaller tube diameters can help ensure refrigerant velocity is high enough to keep oil moving through the coil. For those reasons, we like to size condensers with 3/8" tubes.
Connections

Connections for most refrigerant applications are copper sweat. Other types of connections are prone to leak, which is a big problem when working with refrigerants.

Condenser Coil Specifications

Tubes

Constructed from UNS 12200 seamless copper while conforming with ASTM B75, ASTM B88 and ASTM B251d

5/8" diameter
- 0.020", 0.025", 0.035", or 0.049" wall
1/2" diameter
- 0.017", 0.025", or 0.032" wall
3/8" diameter
- Rifled
  - 0.012" or 0.016" wall
- Smooth
  - 0.016" wall

Fins

All fins feature continuous die formed construction

5/8" x 1.500" x 1.299" pattern
- Waffle or flat corrugation
- H1100 aluminum or C12200 copper
- 0.0060", 0.0075", or 0.0100" thickness
- 4-14 fins per inch
1/2" x 1.250" x 1.083" pattern
- Waffle or flat corrugation
- H1100 aluminum or C12200 copper
- 0.0060", 0.0075", or 0.0100" thickness
- 4-14 fins per inch
3/8" x 1.000" x 0.866" pattern
- Waffle or louvered corrugation
- H1100 aluminum or C12200 copper
- 0.0045", 0.0060", or 0.0075" thickness
- 6-24 fins per inch

Headers

Constructed from UNS 12200 seamless copper while conforming with ASTM B75, ASTM B88 and ASTM B251d

Optional Schrader valves for refrigerant charging or evacuation

Headers range from 0.75" nominal diameter (0.875" outside diameter) to 2-1/2" nominal diameter (2.625" outside diameter)

Connections

Sweat
- Copper (Type "L")

Casing

16 or 18 gauge
- Galvanized Steel (G90)
- Stainless Steel (304)
- Stainless Steel (316)
- Aluminum (H11)

Condenser Coil Performance

Coil performance varies greatly from application to application. Flow rates and temperatures for both fin and tube sides will greatly influence the performance characteristics for any given coil.

We have state of the art software that we can use to quote performance. For a detailed performance run tailored to your situation, please email sales@emergentcoils.com with as many of the following details as you have available: