FIELD: heating.
SUBSTANCE: shell-and-tube heat exchanger contains a housing with the built-in heat exchange surface in the form of straight-tube bundle with a movable bottom tune grid with the collector, pipes for input and output of gas-liquid coolants, disposed on the housing. Straight-tube bundle contains a central tube, having an outer ring cavity, closed at the bottom. The upper part of the straight-tube bundle pipes on the condensing side is limited by the partition-apron with a pipe for discharging the non-condensed gas outside the device housing.
EFFECT: increase of the heat exchanger operation reliability.
2 cl, 1 dwg
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