Cleanroom HVAC and Air Handling Equipment

Steam Heating Coil

A framed finned-tube coil that condenses plant steam inside its tubes to provide high-capacity cleanroom air heating.

Latent-Heat Transfer
Steam Distribution Header
Positive Condensate Drainage
Serviceable Return Bends

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Product Introduction

Steam enters a distribution header and flows through copper tubes surrounded by aluminum fins. As steam condenses, latent heat transfers rapidly to the air crossing the fin face and condensate exits through a lower return connection. Correct tube pitch, casing orientation and venting support drainage at part load, while a non-freeze steam-distributing pattern can be selected for cold outdoor-air duty.

Key Features

Latent heat of condensation provides substantial air-temperature rise in a compact one- or two-row coil.

A properly sized steam header distributes vapor across the tube bank instead of concentrating flow at one circuit.

Lower condensate connections and pitched tubes reduce retained water and waterhammer risk.

Removable casing panels expose tube returns, vents and trap connections for inspection.

Customer Product Concerns

Steam coils need uniform distribution and unrestricted condensate removal to avoid noise, erosion and freeze damage.

Condensate pools in tubes during low-load operation.Pitched circuits and a low condensate header establish positive drainage to the steam trap.

Cold outdoor air freezes retained condensate in inactive tubes.A steam-distributing tube arrangement keeps vapor moving through the active heating tube.

Wet steam erodes the inlet header and creates noisy operation.Upstream separation and correctly sized header entry deliver dry steam at controlled velocity.

Dirty fins restrict airflow and reduce leaving temperature.Accessible wide fin spacing and removable face guards support careful coil cleaning.

Typical Applications

Cleanroom AHU winter heatingOutdoor-air preheat sectionsHospital ventilation systemsPharmaceutical drying airLaboratory make-up air

Technical Parameters

Typical physical ranges for a duct-mounted copper/aluminum steam coil are shown below.

Core Material	C12200 copper steam tubes with aluminum fins and carbon-steel or copper headers
Panel Thickness	1.5-2.0 mm galvanized steel coil casing
Effective Width	300-2400 mm active finned-face width
Maximum Length	Up to 3600 mm overall coil casing length
Steel Facing Thickness	1.5-2.0 mm galvanized or 304 stainless casing
Core Density	Approximately 8940 kg/m³ for the C12200 copper steam-tube material
Thermal Conductivity	Approximately 339 W/(m·K) for C12200 copper steam tubes at room temperature
Surface Finish	Natural aluminum fins with galvanized or stainless frame
Joint Type	Brazed tube-to-header joints with flanged casing and threaded or flanged steam ports
Customization	Available based on the intended application and operating environment.

Available Options

Standard or non-freeze steam-distributing circuitsCopper, steel or stainless headersAluminum, copper or coated finsOne- or two-row construction with custom fin spacing

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