Two tube-shaped deposition probes equipped with detachable
metal rings with diameter 0.016 m and length 0.03 m were
inserted to the flue gas channel during the stable period
simulating real superheaters. The ring sections were placed in
the middle of the flue gas channel (Fig. 2). The probes were aircooled
and metal rings surface temperatures were measured
and controlled just before the joining point between the metal
ring and the probe body.