What are Hot Water and Glycol Heating Coils?

Glycol and hot water heating coils are ideal for applications where there is a potential to see freezing conditions on either the air side or the fluid side of the coils. These coils have good heat transfer properties, low volatility and provide freeze and burst protection with the proper glycol concentration selection.

Both ethylene and propylene glycol solutions are utilized in numerous industrial applications. Propylene glycol is selected where there is potential for contact with food, beverage or other consumable products or where reduced toxicity is of an environmental concern. Advanced Coil fluid coils utilizing hot water, chilled water, cooling tower water or a water/glycol mix are ideal for a wide variety of industrial applications such as:

Hot Water & Glycol Coil Applications

• Make-up air preheating
• Industrial cooling
• Process drying
• Comfort cooling
• Heat treatment
• Dehumidification
• Area heating
• Heat dumps
• Heat recovery

Hot Water Coil Design

For rigorous applications, Advanced Coil designs and manufactures hot water heating coils and glycol coils to accommodate the following:

• Free-floating segmented design accommodates the high-temperature loads and thermal expansion and contraction forces
• Unexpanded stainless steel (304 or 316) tubes are well suited for corrosive environments
• Heavy walled tubes and TIG welded construction allows us to design coils for either high or low temperature and/or high-pressure applications

Water Cooling Coils

Cooling coils are used in applications where products in the air stream can condense and should be designed with an airside face velocity below 500 feet per minute to reduce the potential for entrainment of condensed liquids in the leaving airstream.

These coils can be installed in two possible configurations:

In addition to our standard header products, we can also provide coils with removable headers to access either one or both ends of the coil. The removable header designs are used when serious tube fouling may be encountered from particulate deposits (e.g. effluents, process water) in the hot water supply or where accessibility is required for inspection and/or cleaning.

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Specifications – Hot Water & Glycol Heating Coils

At ACT we offer a variety of tube and fin configurations which will accommodate virtually any application, regardless of the operating temperatures, pressures or environmental conditions.

If the material that you need for a specific project is not listed below please contact us to discuss your needs.  We have experience using a variety of other materials.

Fin Materials	Tube Materials	Case Materials	Fin Spacing
0.025” or 0.016” thick half-hard temper aluminum	7/8” x 0.049” wall 304L or 316L stainless stee	16ga. to 1/4” 304L or 316L stainless steel	2.5 to 11 fins per inch spacing
0.025” or 0.016” thick half-hard temper copper	7/8” x 0.083” wall 304L or 316L stainless steel	16ga. to 7ga. galvanized steel
0.010” thick 304 or 316 stainless steel	7/8” x 0.109” wall steel	Other materials upon request
0.012” thick carbon steel

Typical Application Reference Chart

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Typical Application	Tube Material	Header Material	Typical Design Pressure @ Temperature*
Non-corrosive fluids and atmospheres	0.049” wall (18 ga.) 304LSS	Sch 40 304LSS	250 PSIG @ 450°F
Water, glycol/water solutions, thermal fluids and corrosive fluids and/or atmospheres	0.049” wall (18 ga.) 304LSS	Sch 40 304LSS	250 PSIG @ 450°F
Water, glycol/water solutions, thermal fluids and corrosive fluids and/or atmospheres	0.049” wall (18 ga.) 316LSS	Sch 40 316LSS	250 PSIG @ 450°F
High pressure water, glycol/water solutions, thermal fluids and corrosive fluids and/or atmospheres	0.083” wall (14 ga.) 304LSS	Sch 40 304LSS	250 PSIG @ 450°F
High pressure water, glycol/water solutions, thermal fluids and corrosive fluids and/or atmospheres	0.083” wall (14 ga.) 316LSS	Sch 40 316LSS	250 PSIG @ 450°F

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Product Gallery

*Higher pressures and/or temperatures are available to meet the specific project requirements

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Resources

Fluid Coils 279.3 KiBDOWNLOAD