Thermal Fluid Heating Systems

Thermal fluid heating, sometimes referred to as thermal oil heating, is a type of indirect heating where a liquid phase heat transfer medium is heated and circulated to one or more heat energy users within a closed loop system. Thermal fluids offer the user the capability of high temperature operation (up to 600F with organic thermal oils and 800F with certain synthetics) at very low pressures. Due to the low operating pressure and properties of thermal oils, most heaters are built to ASME Section VIII, and a licensed boiler operator is not typically required.

Sigma Thermal offers two types of standard thermal fluid heating system packages, as well as custom engineered thermal fluid heaters. Contact one of our application engineers and let us help you decide which solution is right for your project.

HC-2

This heater uses a high efficiency, three‐pass, double helical coil design. This three pass helical coil configuration cools flue gasses significantly before they contact the external shell, eliminating the need for internal shell insulation which reduces long term maintenance issues associated with… read more »
HC-1

This heater is a two‐pass, single helical coil design that offers sturdy reliability at a lower cost than the HC‐2. Standard models are available from 500,000 to 40MM Btu/hr in both vertical and horizontal configurations… read more »
Engineered Thermal Fluid Heaters

Engineered thermal fluid heaters can be custom designed when specifications differ from those of the standard heater designs. Dirty fuels, bio‐mass fuels, and API‐560 requirements are all reasons to think about a custom engineered… read more »
Economizers

Economizers mean higher thermal efficiencies and lower operating costs. With the typical elevated operating temperatures associated with thermal oil systems, it can be difficult to obtain high efficiencies in the heater alone… read more »