FIELD: power engineering.
SUBSTANCE: in a vertical shell-and-tube evaporator with an overheater, comprising a bundle of inner heat exchange tubes and external tubes installed coaxially with a circular through gap relatively to each other, installed in a cylindrical vessel, having a lower nozzle of heated coolant inlet and an upper nozzle to discharge the latter, as well as upper and lower grids to connect ends of inner tubes and a grid for fixation of external tubes, a cover and a bottom with nozzles for supply and drain of the cooled coolant, the external tubes with their grid are moved upwards from the lower grid by height sufficient to transfer the heated coolant into gaseous condition on the produced open heating surface of the external tubes.
EFFECT: reduced dimensions and weight of a shell-and-tube evaporator.
1 dwg
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