FIELD: heat-exchange apparatus.
SUBSTANCE: method comprises supplying gas to the pipes of the multi-row heat-exchanging section and supplying air to intertube space transverse to the tube bank by means of a fan. The air is supplied from bottom to top. The temperature of the outer wall of the tubes in the bottom row is measured at the outlet of the tubes. When the temperature of the tubes drops down to the temperature of the air entering the tube bank, the fans are cutoff and they operate in the reverse regime.
EFFECT: improved method.
1 dwg
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