in a device for baking of clinker in a clinker , the heat generated in the furnace can be used in a particularly efficient and versatile manner if heat generated in the furnace is transferred , by means of a first heat exchanger , to a heat carrier fluid , the heated heat carrier fluid is transported through at least one line to at least one second heat exchanger , and the heat is then discharged to a heat sink , for example in order to heat a flow of flue gas to a temperature required for the dentitrifiaction thereof .