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to high pressures and temperatures , while maintaining superior containment of the highly diffusive hydrogen molecule . This reliability has made Greene Tweed ’ s materials a standard for components like seals and gaskets in electrolytic systems .”
The small molecular size of hydrogen adds another layer of complexity , with its high diffusivity often leading to leaks and efficiency losses . Greene Tweed ’ s advanced materials minimize permeability , ensuring system integrity and durability , even in the most aggressive chemical environments . These solutions contribute directly to improving the scalability and efficiency of clean hydrogen production systems .
In fuel cells , contamination from extractables in materials can poison the system , while creep resistance becomes critical as designs move toward higher pressures and temperatures to boost efficiency . “ Fuel cells are a prime example of where the right material choice can make or break a design ,” Philippe notes . “ Our materials are tailored
" Together with our customers , we are creating solutions that will power the transition to clean energy .”
to meet these needs , ensuring reliability in everything from thin gaskets to structural components .”
Meeting the increasing demands of hydrogen storage and distribution
Hydrogen storage , transport , and refueling require materials that can reliably handle extreme pressures and temperatures . In these segments , Greene Tweed ’ s materials have proven indispensable . “ One of our customers was developing a pressure relief valve for hydrogen refueling stations , targeting pressures up to 1,300 bar and temperatures of around 150 ° C ,” Philippe recounts . “ Every other material tested failed under these conditions . Our Arlon 3000XT ® was the only solution capable of meeting these harsh requirements , and it has since become the default material in their new valve design .”
Enhancing hydrogen compression with cutting-edge materials
Compression is a critical step in the hydrogen value chain , with hydrogen ’ s distinctive properties posing significant challenges for traditional systems . Greene Tweed is rising to meet these challenges with cutting-edge materials designed to redefine performance standards .
Greene Tweed ’ s Xycomp ® composite impeller
“ The hydrogen molecule has very low lubricity , and these compressors need to be oilfree ; otherwise , you risk contaminating the hydrogen ,” explains Philippe . “ This creates a very dry environment , which exacerbates wear and friction issues in reciprocating compressors . At the same time , there is a push to increase
14 Hydrogen Tech World | Issue 20 | February 2025