An infrared emitter element includes: at last one emitter tube made of silica
glass, which has two ends; at least one electrical conductor arranged in the emitter
tube as a radiation source; a cooling tube made of silica glass, which surrounds
the at least one emitter tube spaced therefrom and which is connected to the at
least one emitter tube directly at its ends, such that in the region of the electrical
conductor at least one flow-supporting channel is formed between the at least one
emitter tube and the cooling tube; and a metallic reflector. The cooling tube is
completely covered with the reflector on its side facing away from the emitter
tube. The infrared emitter element may be used as a flow-through heater, such as
a heat exchanger, especially for high-purity fluids.
