Custom Shell and Tube Heat Exchangers: Design & Manufacture
Graham Hart Process Technology designs and manufactures bespoke TEMA-standard shell and tube heat exchangers for high-pressure, cryogenic, and high-fouling environments. With 50+ years of expertise, we provide thermal and mechanical engineering for global process industries.
Custom Air Cooled Heat Exchangers: Design & Manufacture
Graham Hart Process Technology provides bespoke air-cooled heat exchangers (ACHEs) and condensers designed for high-pressure oil and gas, hydrogen service and low-pressure industrial applications. We manage the entire lifecycle—from full thermal and mechanical design to on-site fan balancing—ensuri…
Industrial Cross Flow Heat Exchangers: Design & Manufacture
Graham Hart Process Technology specialises in the thermal and mechanical design of Cross Flow Heat Exchangers. By directing fluid streams perpendicular to one another, these units achieve high heat transfer coefficients with a lower pressure drop than standard shell and tube designs. They are the i…
Custom Double Pipe Heat Exchanger Design & Manufacture
Graham Hart Process Technology specializes in the design and manufacture of high-performance double pipe heat exchangers (also known as hairpin or concentric pipe exchangers). These units are the ideal choice when conventional shell and tube designs are uneconomical or space is at a premium. By uti…
Multi-Tube Hairpin Heat Exchanger Design & Manufacture
Graham Hart Process Technology specialises in Multi-Tube Hairpin Heat Exchangers, often referred to as "multis." These units utilise a U-tube bundle within separate shells for each leg, achieving true counter-current flow. This design is specifically engineered to handle significant "temperature cr…
Custom Coil Heat Exchanger Design & Manufacture
Graham Hart Process Technology specialises in the design and manufacture of high-performance Coil Heat Exchangers. From helical coils for vessel-mounted reactions to "pancake" coils for tank heating and sub-sea cooling, these units are engineered to handle extreme thermal expansion and high volumet…
Direct Contact Heat Exchanger Design & Manufacture
Graham Hart Process Technology specialises in the bespoke design of Direct Contact Heat Exchangers and Condensers. By eliminating the physical barrier between fluids, these units achieve superior heat transfer coefficients and closer temperature approaches than traditional surface exchangers. They…
Bespoke Reactor Vessel Design & Manufacture
Graham Hart Process Technology specialises in the mechanical and thermal design of bespoke reactor vessels. We provide high-specification solutions—including limpet coils, jackets, and internal coils—engineered to manage precise temperature control and high-pressure reactions. Our reactors are desi…