BeHydro's Hydrogen-Fuelled Engine Secures LR Type Approval

BeHydro, a Belgian hydrogen engine developer, has achieved a significant milestone in maritime decarbonization: Lloyd’s Register type approval for its 100% hydrogen-fuelled engine. This breakthrough, coupled with the engine’s successful factory acceptance test, paves the way for wider adoption of hydrogen as a viable marine fuel, evidenced by its earlier application in Japan’s first hydrogen-powered tugboat.

Key Technical Specifications and Facts

BeHydro’s newly approved engine is a spark-ignited, four-stroke engine designed specifically for operation on 100% hydrogen. This is a crucial distinction from dual-fuel engines that may incorporate hydrogen alongside conventional fuels. The key specifications, as announced by BeHydro, are:

• Fuel: 100% Hydrogen
• Power Output: 900 kW
• Engine Speed: 900 rpm

The engine has successfully completed both type approval testing by Lloyd’s Register and a factory acceptance test. These tests are critical for demonstrating the engine’s reliability, safety, and performance characteristics, ensuring it meets stringent maritime standards. The successful completion of these tests signifies a major step towards commercial viability. BeHydro also highlights their experience with dual-fuel hydrogen engines, noting their prior deployment in Japan’s pioneering hydrogen tugboat, which has a hydrogen storage capacity of approximately 250 kg.

Technical Analysis: A Leap Towards Zero-Emission Shipping

The development of a 100% hydrogen-fuelled engine represents a significant advancement compared to dual-fuel systems. While dual-fuel engines offer a transitional pathway, they still rely on conventional fuels, limiting their overall emissions reduction potential. A dedicated hydrogen engine eliminates the need for fossil fuels entirely, offering the possibility of near-zero emissions when coupled with sustainably produced (green) hydrogen.

The spark-ignited design is also noteworthy. Spark ignition is a well-established technology, making it easier to adapt and scale for hydrogen combustion. However, hydrogen combustion presents unique challenges. The high reactivity and fast flame speed of hydrogen require careful engine design to prevent issues like pre-ignition and knock. The fact that BeHydro has overcome these challenges to achieve type approval indicates a robust and well-engineered design. The 900 kW power output is suitable for a range of vessel types, including tugboats, ferries, and smaller cargo ships. The engine speed of 900 rpm is typical for medium-speed marine engines, offering a balance between power density and durability.

Industry and Regulatory Context

This development arrives at a pivotal moment for the maritime industry. The International Maritime Organization (IMO) is actively pursuing measures to reduce greenhouse gas (GHG) emissions from shipping, targeting a significant reduction by 2050. Hydrogen is increasingly recognized as a promising alternative fuel to achieve these ambitious goals.

The IMO is currently advancing draft amendments to its NOx Technical Code, specifically aimed at enabling the certification of engines running on non-carbon fuels like hydrogen and ammonia. This regulatory adaptation is crucial, as it provides a clear framework for manufacturers and shipowners to adopt these new technologies. The fact that BeHydro’s engine has already secured type approval from Lloyd’s Register demonstrates proactive compliance with evolving regulatory standards.

The use of hydrogen in Japan’s first hydrogen-fuelled tugboat, powered by BeHydro’s dual-fuel technology, also demonstrates a growing global interest in hydrogen as a marine fuel. These early adopters are paving the way for wider adoption by demonstrating the feasibility and benefits of hydrogen-powered vessels.

Why This Matters for the Hydrogen Shipping Sector

BeHydro’s achievement has profound implications for the hydrogen shipping sector:

• Demonstrates Technical Feasibility: The successful type approval and factory acceptance test provide concrete evidence that 100% hydrogen-fuelled engines are a technically viable solution for maritime applications. This can help to build confidence among shipowners and operators who may be hesitant to invest in unproven technologies.
• Accelerates Adoption: By offering a commercially available, certified hydrogen engine, BeHydro is accelerating the adoption of hydrogen as a marine fuel. This will help to drive down costs and improve the availability of hydrogen infrastructure.
• Reduces Emissions: The use of 100% hydrogen engines offers the potential for near-zero emissions, contributing significantly to the maritime industry’s decarbonization efforts.
• Supports Hydrogen Infrastructure Development: As more hydrogen-powered vessels are deployed, the demand for hydrogen fuel will increase, incentivizing the development of hydrogen production and distribution infrastructure.

This engine represents a key enabling technology for the broader hydrogen value chain in the maritime sector. Without reliable and certified engines, the potential of hydrogen as a clean marine fuel cannot be fully realized.

Challenges and Open Questions

While this is a significant step forward, challenges remain:

• Hydrogen Storage: Storing hydrogen onboard vessels presents logistical challenges due to its low volumetric energy density. Options include compressed hydrogen, liquid hydrogen, and potentially solid-state storage, each with its own advantages and disadvantages. The optimal storage solution will depend on the vessel type and operational profile.
• Hydrogen Production and Supply: The widespread adoption of hydrogen as a marine fuel requires a reliable and sustainable supply chain. Green hydrogen, produced from renewable energy sources, is the most desirable option from an environmental perspective, but it is currently more expensive than hydrogen produced from fossil fuels.
• Safety Regulations and Standards: Comprehensive safety regulations and standards are needed to ensure the safe handling and use of hydrogen onboard vessels. These regulations must address issues such as leak detection, ventilation, and fire suppression.
• Cost Competitiveness: Hydrogen fuel needs to become cost-competitive with conventional fuels to encourage widespread adoption. This will require further technological advancements and economies of scale in hydrogen production and distribution.

Sources

shipandbunker.com — https://shipandbunker.com/news/emea/471883-behydros-hydrogen-fuelled-engine-secures-lr-type-approval