METHOD FOR OPERATING A HEAT EXCHANGE SYSTEM WITH A BYPASS DUCT AND HEAT EXCHANGE SYSTEM WITH A BYPASS DUCT

A method for operating a heat exchange system is provided. The heat exchange system comprises at least one heat exchange chamber with heat exchange chamber boundaries which surround at least one heat exchange chamber interior of the heat exchange chamber, wherein the heat exchange chamber boundaries comprise at least one first opening for guiding in an inflow of at least one heat transfer fluid into the heat exchange chamber interior and at least one second opening for guiding out an outflow of the heat transfer fluid out of the heat exchange chamber interior, at least one heat storage material is arranged in the heat exchange chamber interior such that a heat exchange flow of the heat transfer fluid through the heat exchange chamber interior causes a heat exchange between the heat storage material and the heat transfer fluid. During a charging process with a heat transfer from the heat transfer fluid to the heat storage material a heat transfer fluid of more than 700°C is used. Preferably, a heat transfer fluid of more than 750 °C is used.