Steam Coils

Steam Coils

Heatcraft^® Steam Coils are used in industrial air heating and processing and HVAC applications. These coils make use of the steam’s hidden heat (change of state) that is released when it condenses from a vapor to a liquid.  All steam coils are specifically designed with condensate management in mind. Tube and connection size are combined to limit condensate retention in the coil, preventing water hammer while delivering even distribution of steam across the entire face. Steam coil construction is available for high and low pressure applications and is a very effective way to heat air.

Standard steam coil type is a single tube design made from a 5/8″ or 1″ tube steam coil. The steam supply and condensate return headers and connections are normally at opposite ends of the coil. Uniform steam distribution to each coil core tube is accomplished by proper header assembly design.

A steam distributing coil is a dual-tube design using 5/8″ and 1″ tubes that are commonly referred to as freeze-resistant.  It is important to note that any steam coil can have condensed water freeze when exposed to freezing temperatures without properly draining the condensate.

This coil design utilizes a smaller inner tube with precisely spaced directional orifice-type perforations. This arrangement helps direct condensate flow to the return header. The steam supply, condensate return headers, and connections may be fabricated as a same-end or opposite-end construction. When made as a same-end connection, the header appears as a single large header, but is actually two headers in one. Compartmentalizing the header serves multiple functions by providing for a supply and return. The inner steam supply header warms the condensate return and allows same-end connected single and two-row coil construction. This eliminates the unwanted core tube return bends on a steam coil.