FIELD: heat engineering.
SUBSTANCE: invention relates to the field of heat engineering, it can be used in rotary heat exchangers. Multi-tube rotary heat exchanger (1) has stationary protective unit (20). The specified protective unit is located in the close proximity of tube board (8, 9) outside heating or cooling area (D). Fixed plane (30) of the specified protective unit is located opposite and in close proximity to end hole (2a, 2b) of heat exchange tube (2), which moves in upper zone (α) of the specified heating or cooling area, thereby briefly reducing or limiting the specified flow rate of the specified heat carrier fluid passing through the specified heat exchange tube, which moves in the specified upper zone.
EFFECT: increased energy or thermal efficiency of the heat exchanger by reducing or limiting the flow rate of the heat carrier fluid passing through the heat exchange tube.
20 cl, 15 dwg
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