Graham Heat Exchanger Overview


The Graham Heliflow is a unique type of shell and tube heat exchanger, yielding heat transfer rates that can be more than 40% better than typical shell and tube designs.

The tubes in the Heliflow are arranged in parallel, starting with an inlet manifold on one end, and terminating at an outlet manifold on the opposite end. The tube bundle is wound into a helical pattern. This coiled construction creates a spiral flow path for the fluid inside the coil.

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Each tube is in close contact with the tube above and below it. The coiled tube bundle is fit into a two piece casing. When the casing is tightened, it is designed to slightly compress the tubes. Because of the tight fit, the shellside fluid is forced to circulate in a spiral pattern, which is created by the open spaces between the coils.

High pressure, specialized materials, cyclic operation, temperature extremes and other conditions can be handled without a problem. The Graham Heliflow Heat Exchanger has years of proven service, in thousands of applications throughout the world, with high quality performance always guaranteed.

Graham also manufacture Desuperheaters and for more information, please click HERE

Advantages of Heliflow Heat Exchangers


A unique high efficiency design

The tubes in the Heliflow are arranged in parallel, starting with an inlet manifold on one end, and terminating at an outlet manifold on the opposite end. The tube bundle is wound into a helical pattern. This coiled construction creates a spiral flow path for the fluid inside the coil.

Each tube is in close contact with the tube above and below it. The coiled tube bundle is fit into a two-piece casing. When the casing is tightened, it is designed to slightly compress the tubes. Because of the tight fit, the shellside fluid is forced to circulate in a spiral pattern created by the open spaces between the coils.

Advantages of Graham Heliflow Spiral Tube Heat Exchangers

•Higher efficiency
•Easy to maintain
•Accommodates pressures up to 15,000 psig
•High reliability
•Code compliant
•Easily customized
•Low flow rates
•Compact design
•Withstands 500 deg. F temperature difference between fluids
•Varied material choices

Applications for Heliflow Heat Exchangers


The many advantages of the unique Graham Heliflow make it an efficient heat exchanger for a wide range of applications; some of which include:

Liquid-to-liquid •Cryogenic •High pressure •Clean steam generators •Blowdown •Natural gas heaters •Vent condensers •Mechanical seal coolers •Compressor inter/aftercoolers •Supercritical fluid •Feedwater preheaters •Lethal service •Steam or process fluid vaporizers •Boiler or process sample coolers •Hot water heaters •High temperature •Freeze condensers •Hydraulic/lube oil coolers



Graham Desuperheaters

Graham Desuperheaters are used to lower the temperature of superheated steam. They can maintain a set outlet temperature when flow rate or pressure varies.

For further details of our Graham Desuperheaters, please click HERE