Fraunhofer Institute for Laser Technology (Fraunhofer ILT) launched the InnoWaerm project to develop titanium aluminide microreactors and heat exchangers designed to produce hydrogen onboard heavy vehicles, featuring a new laser preheating process to enable complex 3D-printed intermetallic parts. The two-year, €1.5 million effort involves Fraunhofer IMM and seeks to adapt additive manufacturing for mobile hydrogen generation using liquid carriers such as methanol or ammonia.
The project focused on producing microstructured reactors and lightweight heat exchangers from brittle but heat-resistant titanium aluminide, a material previously hard to print. Researchers tested design approaches, material handling and manufacturing parameters to make robust, compact components suitable for mining equipment, aircraft and large agricultural machines.
For operators, onboard microreactors promise reduced reliance on heavy hydrogen storage by creating fuel where it’s needed, improving payload and range for applications that challenge batteries. If the process scales, it could shift how mobile heavy-duty systems store and supply hydrogen and accelerate adoption of high-temperature intermetallic components in transport.
Image Credit: Fraunhofer ILT
Why This Trend Is Growing
- Onboard Hydrogen Microreactors
- Decentralized hydrogen generation onboard heavy vehicles has the potential to reduce reliance on bulky storage and substantially increase payload and operational range.
- 3d-printed Intermetallic Components
- Advances in additive manufacturing of brittle, heat-resistant intermetallics like titanium aluminide open possibilities for lighter, more compact high-temperature reactors and heat exchangers.
- Laser Preheating for Additive Manufacturing
- Integration of laser preheating into metal 3D printing can enable complex geometries and microstructures in challenging alloys, shifting material choices for mobile power systems.
Industries Being Reshaped
- Heavy-duty Transport
- Onboard microreactors for trucks and construction machines may disrupt fuel logistics by enabling in-situ hydrogen production that improves payload efficiency.
- Aerospace and Defense
- Lightweight, high-temperature intermetallic components could transform propulsion and auxiliary power systems by offering superior strength-to-weight ratios under extreme conditions.
- Mining and Agricultural Equipment
- Compact hydrogen-generating reactors integrated into field and mining machinery promise extended operation in remote locations where refueling infrastructure is limited.
