5 ms·

The higher temperature output is a good point, you can't get 400C output for industrial processes from a 100C water based heat battery.

• dinkblam 1y ago
  a Blast furnace needs closer to 2000° than 400° in any case, how would you transport high temperatures to the industrial sites? water boils at 100° and few liquids boil above 400°. most liquids will be impractical due to cost or safety (combustibility, toxicity…).
  • happosai 1y ago
    Of course you can't do blast furnace with a sand battery. But there is still a sizable market for industrial heat in between 100c <> 400c.
  • rsynnott 1y ago
    Pump water through, producing steam to drive a turbine, use turbine to generate electricity, use electricity for industrial process. Now, in practice you _probably_ don't want to do this, because, in this case, you have district heating demand, which is a far more efficient use of the power.
  • fulafel 1y ago
    Steam?