Custom Coil Heat Exchanger Design & Manufacture

Helical coils are typically used within vessels or reactors, with or without agitation, to maintain precise temperature control during chemical reactions. Pancake coils are frequently employed for tank heating via natural convection or as exposed "atmospheric" coils mounted sub-sea or outdoors for fluid cooling and condensing. They are a preferred solution in the nuclear, pharmaceutical, and sub-sea sectors where reliability and compact design are paramount.

In high-temperature applications, long straight tubes often face severe mechanical fatigue due to thermal expansion. This leads to tubesheet failures or the need for expensive expansion bellows. Furthermore, in "low-approach" duties, a traditional exchanger may become prohibitively large to achieve the required surface area.

At Graham Hart Process Technology, we solve the "Why" of process cooling and heating by leveraging the physics of the coil. Our engineers use advanced thermal modelling to calculate the specific enhancement factors provided by the helical geometry. By coiling the tubes, we eliminate the risk of thermal stress while increasing the heat transfer coefficient. Whether it is a safety-critical sample cooler for a nuclear plant or an ultra-clean coil for a pharmaceutical reactor, we deliver a unit that is mechanically robust and thermally superior to "off-the-shelf" straight-tube solutions.