FIELD: heat exchange.
SUBSTANCE: invention relates to device for heat recovery from heating medium, containing heat exchanger (1) with main flow channel (3), surrounded by additional flow channel (2). Inside the additional flow channel (2) there is at least one heat exchange element (4), by means of which, when the waste heat source is operating, heat from the heating medium generated by the waste heat source is transferred to the working medium flowing through the heat exchange element (4). Besides, heat exchange element (4) contains at least two components (5, 6), at that on at least one section (7, 8) of heat exchange element (4) material of first component (5) of heat exchange element, through which the working medium flows, and the material of the second heat-exchanging element (4) increasing heat-exchange element (4) component (6) have different material properties.
EFFECT: device for heat recovery is proposed.
10 cl, 3 dwg
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