HEAT EXCHANGE ELEMENT Russian patent published in 1995 - IPC

Abstract RU 2027969 C1

FIELD: heat-power engineering. SUBSTANCE: element has two tubes mounted coaxially in spaced relation; surfaces of these tubes are provided with spiral grooves with opposite direction of twisting. Helix angles of grooves range from 50 to 70 deg; helix angle of grooves of inner tube is not equal to that of outer tube. EFFECT: enhanced efficiency. 3 dwg

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RU 2 027 969 C1

Authors

Sudarev A.V.

Sudarev B.V.

Sudarev V.B.

Kondrat'Ev A.A.

Tsurikov A.N.

Dates

1995-01-27—Published

1993-02-24—Filed