Heat exchange core body based on enhanced heat exchange technology and gas cooling method

The invention provides a heat exchange core body based on an enhanced heat exchange technology and a gas cooling method, a three-dimensional fin heat exchange tube of the heat exchange core body is vertically arranged, a plurality of rows of outer fins are arranged on the outer wall of the three-dimensional fin heat exchange tube at intervals, and any adjacent rows of outer fins are arranged in a staggered mode; the outer rib root part of each outer rib is located above the outer rib tip part, and the side edges of the adjacent outer ribs in the axial direction are close to each other or make contact with each other, and the method comprises the steps that a cooling medium is introduced into an inner cavity of the vertically-arranged three-dimensional rib heat exchange tube and made to flow along the tube; continuously flowing heating medium gas is transversely introduced into the periphery of the vertically arranged three-dimensional fin heat exchange tube; in the heat exchange process, liquid drops condense