What’s the best way to store energy, from industry scale to electric vehicles, replacing the widespread use of fossil fuels? Pure hydrogen is an energy dense alternative, but the gas takes up a lot of space. Liquid ammonia doesn’t, yet it contains the hydrogen and therefore the energy. Ian Wilkinson at Siemens explains the advantages of using ammonia, NH3. Already the world produces 180m tonnes a year, worth €80bn. It’s mainly for agricultural fertiliser and its history of production goes back a hundred years: the Haber-Bosch process won those two gentlemen Nobel Prizes. So producing it at scale is a given. But ammonia today is derived from fossil fuels, both to power the production and to source the hydrogen. Wilkinson describes the Siemens Green Ammonia Demonstrator that is producing clean ammonia from green hydrogen and nitrogen, all powered by a wind turbine. Ammonia is a hazardous chemical, but existing industry standards should ensure it can be safely processed, stored and transported. He says the next step is to deploy clean ammonia production at scale to learn about the real world issues and costs it may face. Promoted by Siemens.
Energy Post 20th April 2020 read more »