Steam Distributing Coil

Top quality steam distributing coils built to your specifications for commercial and industrial applications.

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Steam Distributing Coil Design

A steam distributing coil is a lot like a standard steam coil. The major difference is in its tube-in-tube design. The interior tubes distribute steam through orifices along the tube. This allows the steam to be better spread out, and helps to prevent freezing. For that reason, they are given the nickname Non-freeze -- but, they certainly can freeze, especially if freeze protection is not considered.

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

  • Rows

    Steam coils operate at the highest temperatures of any other common coil type. As such, only 1-2 rows are usually required.

  • Tube Diameter

    Larger tube diameters are common for steam distributing coils. 5/8" to 1-1/8" are all common sizes -- with 1" normally preferred for appropriate condensate drainage.

  • Connections

    Connections for Steam coils are typically MPT (Male Pipe Thread) and made from copper. Typically the steam inlet diameter is larger than the outlet by at least 1 size.

Steam Distributing Coil Specifications

Tubes

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

Outer Tubes
  • 1" diameter
    • 0.035 or 0.049 wall
  • 5/8" diameter
    • 0.020", 0.025", 0.035", or 0.049" wall
Inner Tubes
  • 5/8" diameter (for 1" outer tubes)
  • 3/8" diameter (for 5/8" outer tubes)

Fins

All fins feature continuous die formed construction

  • 1" x 3.000" x 2.598" pattern
    • Waffle or flat corrugation
    • H1100 aluminum or C12200 copper
    • 0.0075" or 0.0100" thickness
    • 4-14 fins per inch
  • 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

Headers

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

Headers range from 1" nominal diameter (1.0" outside diameter) to 4" nominal diameter (4.125" outside diameter)

Connections

  • MPT (Male Pipe Thread)
    • Copper (Type "L")
    • Steel (Schedule 40)
    • Red Brass
  • FPT (Female Pipe Thread)
    • Copper (Type "L")

Casing

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

Steam Distributing 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:

  • Coil model number
  • Duct size
  • Air Flow Rate in CFM (cubic feet per minute)
  • Entering Air Dry Bulb Temperature in °F
  • Entering Air Wet Bulb Temperature in °F (cooling coils only)
  • Fluid flow rate in GPM (gallons per minute, for water coils only)
  • Entering fluid temperature in °F
  • Desired capacity in MBH or tons
  • Desired leaving air temperature in °F

Related Applications:

Replacement Coil