Q1 2021 www.H2-Tech.com SPECIAL FOCUS: ADVANCES IN HYDROGEN TECHNOLOGY 18 Advanced precooling for optimized hydrogen liquefaction G. W. Howe, G. F. Skinner and A. J. Finn 23 Advances in chemical carriers for hydrogen R. V. Schneider, D. Kurosaki and M. Oki INFRASTRUCTURE AND DISTRIBUTION 30 Tackling flow measurement challenges for hydrogen fuels D. Anderson DEPARTMENTS 5 Technology Spotlight 8 Projects Update 41 42 Events 43 4 B. Rogers Cover Image: Nel Hydrogen develops and builds its electrolyzers for the production of green hydrogen from renewable sources at its manufacturing facility in Notodden, Norway. Photo courtesy of Nel Hydrogen. 12 Regional Report Expanding low-carbon H2 use in European industry 38 MEMS-based hydrogen sensors improve measurement accuracy and safety Editorial Comment H2Tech: A working technical journal for the hydrogen community M. Moosemiller and J. K. Thomas MEASUREMENT AND INSTRUMENTATION Advertiser Index COLUMNS SAFETY AND SUSTAINABILITY 33 Hydrogen fuel risk assessment and differing views of ignitability Global Projects Data 16 Executive Viewpoint Blue hydrogen's role in the energy transitionhttp://www.H2-Tech.com