Abstract: The application relates to a measuring device for a casing of a deep boring, including at least one electrical measuring cable insertable into the casing and having a first cable end connectable to at least one measuring equipment of the measuring device and a further cable end, at least one measuring head arranged on the further cable end and having at least one electrically conductive connecting element having a contact end configured to contact an inner wall of the casing, and at least one ground contact element connectable to the measuring equipment. The measuring equipment is configured to measure at least one electrical parameter dependent on at least one electrical protection parameter applied to the casing.

Abstract: A battery bank for a redox flow battery having a cavity in which electrolyte is stored, wherein the electrolyte is provided for supply to one or more redox flow cells, wherein the cavity is a cavern.

Abstract: Described and represented is a glycol drying system with at least one wet glycol collection container and/or at least one glycol collection line to collect moist glycol, with at least one heating device to heat the moist glycol in the at least one wet glycol collection container and/or in the at least one glycol collection line and with a membrane separation system to separate the water from the heated, moist glycol. In order to reduce the operating costs, without having to accept disproportionate investment costs, it is provided that at least one flash gas vent is provided to remove flash gas driven out when the moist glycol is heated before separating the water in the membrane separation system and in that at least one combustion chamber is provided to combust the flash gas and to provide heat for the heating device.

Abstract: A battery bank for a redox flow battery having a cavity in which electrolyte is stored, wherein the electrolyte is provided for supply to one or more redox flow cells, characterized in that the cavity is a cavern.