Metal 3D Printed Heat Exchanger: Conflux Develops a 1.4kg Water-Cooled Intercooler for the Donkervoort P24 RS
Conflux Technology, a specialist in the design and manufacture of heat exchangers, has developed a metal 3D printed water-cooled intercooler for Donkervoort's 2025 "P24 RS" supercar.
This component leverages the strengths of 3D printing to create lighter, more compact, and higher-performance parts, and Conflux identifies it as a key innovative product for the year.
Using aerospace-grade aluminum alloy, it weighs only 1.4kg. A conventional device with equivalent performance would weigh up to 16kg.
Integrated Design Reduces Intake Piping Length by Two-Thirds
According to the official announcement, this heat exchanger achieves a fully integrated design. By adopting a dual-module configuration incorporated directly between the turbocharger and the throttle body, the total length of the intake piping is reduced by two-thirds, significantly improving engine response.
Each component employs biomimetic structures optimized through Computational Fluid Dynamics (CFD). These include variable-density heat dissipation fins with thicknesses ranging from 0.2 to 0.5mm, thin-walled heat exchangers with walls only 0.8mm thick, and helical internal flow paths.
Cylindrical Shape Increases Heat Dissipation Area in Limited Space
The outer shape of the heat exchanger is cylindrical, which not only secures a larger heat dissipation area in a limited space but also allows for a more rational layout.
The piping connections on the sides allow for connection to other components via hoses, which can be used to transport coolant or other heat transfer media. This design enables coordination with other cooling systems to form a complete cooling loop, further increasing heat dissipation efficiency.
Helical Internal Heat Dissipation Fins Increase Air Contact Area
The helical heat dissipation fins provided inside are also a major feature. By increasing the contact area with air, heat dissipation efficiency is significantly improved.
As air passes through these helical fins, heat can be removed more effectively. Compared to conventional flat-plate designs, this optimized structure is more efficient at lowering the operating temperature of the device.
Compact Structure Allows Intercooler Placement Within the Engine Bay
The new intercooler is supplied to VanDerLee, a Dutch supplier with a track record of supplying parts to McLaren and Koenigsegg, and is used in combination with their turbocharger.
Due to its compact structure, it can be placed within the engine bay instead of being mounted at the front of the vehicle as in conventional setups. Reports indicate that this placement helps reduce overall piping, further enhancing the vehicle's responsiveness.
Customizing Each Component to Meet Design Requirements
Each component is produced individually via 3D printing, allowing for customization of fin shape, density, and dimensions based on design priorities.
Furthermore, by integrating thin-walled heat exchangers with specific dimensions, the entire system achieves superior cooling effects using less coolant and a smaller surface area.

Why are heat exchangers suitable for metal 3D printing?
This case once again demonstrates the strengths of metal additive manufacturing in thermal management components. Conventional manufacturing processes are constrained by tooling, molds, and assembly methods, whereas metal 3D printing allows for the direct production of complex internal flow paths, thin-walled structures, variable-density heat dissipation fins, and biomimetic shapes.
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