| abstract |
A multi-chamber heat accumulator for storing heat energy as well as for generating electrical energy comprises a pit structure having a bottom, a sidewall, and a cover. The pit structure comprises at least one inner zone with a first solid matter pit filling and at least one outer zone with a second solid matter pit filling. The outer zone at least partially surrounds the inner zone, the pit filling of the inner zone being separated at least in parts from the pit filling of the outer zone by at least one partition wall. The inner zone comprises at least one first pipeline system with at least one inlet to the inner zone and at least one outlet from the inner zone for passing fluids through, which is present at least in parts in the first pit filling material of the inner zone. A method for generating electrical energy is also disclosed. |