An international research team has proposed an atmospheric polygeneration system for hot, humid climates that integrates solar photovoltaics, vapor compression cooling, electrode ionization, PEM water electrolysis, hydrogen storage, and fuel cells. they said in a recent one paper in the International Journal of Hydrogen Energy that the system generates water, cooling and hydrogen and produces 5 kW of electricity, 8.2 tons of cooling, 28.36 l/h of atmospheric water and 17 kg of hydrogen during daytime operation. The researchers reported an energy and exergy efficiency of 10.7% and 7.6% respectively. At night, the system uses stored hydrogen to maintain water and cooling production, while achieving an energetic and exergetic coefficient of performance of 1.58 and 0.28. The roundtrip energy and exergy efficiency of the hydrogen system is 35.8% and 46.1%.
Inpex has begun front-end engineering and design preparations for a blue hydrogen production project in Niigata Prefecture, Japan. It said The project includes a hydrogen plant with an annual capacity of 100,000 tons, which extracts natural gas feedstock from the Inpex-operated Minami-Nagaoka gas field and liquefied natural gas received at the Naoetsu LNG terminal.
EDP has completed environmental procedures for its renewable hydrogen project in Soto de Ribera, Spain, obtaining an ‘integrated environmental permit’. The company said The permit will allow the company to proceed with the development of the first 5 MW of electrolysis capacity, with an investment of more than €20 million ($20.8 million). It claimed the plant will produce 600 tonnes of renewable hydrogen for industrial use annually.
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