Patent ID: 7891187
Filing Date: 2011-02-22
Classification: F28D,Y02E

Abstract:
1. A multi-chamber heat accumulator for the storage of heat energy as well as for the generation of electrical energy, comprising: a pit structure, comprising at least one bottom, one sidewall, and a cover, wherein 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 which at least partially surrounds the inner zone, wherein the pit filling of the inner zone is separated at least in parts from the pit filling of the outer zone by at least one partition wall, and wherein the inner zone further comprises at least one first pipeline system, the inner zone being heated by running fluid through said 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 and which is embedded at least in sections in the material of the first pit filling of the inner zone, wherein the material of the first solid matter pit filling on an average, has a lower granulation than the second solid matter pit filling and comprises sand or a compact structure at least in parts.