Technical FAQs 4

Can sulphur be stored like a pile of coal?

Sulfur can be stored like a pile of coal. “This cycle allows you to get energy out of the sulphur and store it in between. Why it’s in focus now is that we can use 100% renewable energy – concentrated solar – to heat the reaction. That’s why chemical companies now come in and are interested in demonstrating the plant.”

Is elemental sulphur better than molten salt for solar energy storage?

Molten salts are currently state-of-the-art for solar thermal energy storage. But elemental sulphur has more than an order of magnitude greater energy storage capacity, and is ideally suited to seasonal thermal energy storage, DLR Institute of Future Fuels research head Christian Sattler noted in a call from Germany.

Can sulphur be stored in a pile?

And then, because sulphur can be stored in a pile in ambient air, and is not affected by rain, sulphur is just as available as coal was, but with no CO2 emissions, and renewable, due to this thermochemical cycle. Today’s concentrated solar thermal can generate very high-temperature heat from its solar field of heliostats.

Could Sulphuric Acid split be used for thermal energy storage?

By 2021, under the PEGASUS project, Sattler’s team at DLR, along with KIT and several European partner companies had already demonstrated first-of-its-kind sulphuric acid splitting for thermal energy storage.

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