All-secondary air cooled industrial steam condenser

Abstract

A new design for large scale field erected industrial steam condensers in which all of the bundles are constructed as secondary bundles, in A-frame or V-Shape configuration, with tubes oriented 25-35degrees from the vertical, steam fed from the bottom and condensate is collected from the bundles from the bottom using a combination / hybrid manifold that both delivers steam to the tubes and collectscondensate from the tubes and which is constructed so that the condensate is prevented from returning down the steam delivery riser(s) and in which the cross-sectional dimensions of the tubes are 125mm wide with a cross-section height of less than 10 mm with fins that are 9.25 mm in height, arranged at 9 to 12 fins per inch.

Description

technical field [0001] The present invention relates to a large-scale field erected air-cooled industrial steam condensing device. Background technique [0002] The finned tubes currently used in most large field erected air-cooled industrial vapor condensing units ("ACC") are flat tubes, approximately 11m in length and 200mm in width (also known as the "air stroke length") , the leading and trailing edges are semicircular, and the internal height (perpendicular to the air stroke length) is 18.8mm. The tube wall thickness is 1.35mm. Braze the fins to the two flat sides of each tube. The fin height is typically 18.5mm with 11 fins per inch. The surface of the fins is patterned in waves to enhance heat transfer and contribute to the stiffness of the fins. The standard spacing between tubes is 57.2mm from center to center. The tubes themselves constitute approximately one-third of the cross-sectional area (perpendicular to the direction of air flow); whereas the fins const...

AI Technical Summary

Problems solved by technology

Part of the logic is to reduce the vapor pressure drop, which has little effect on the overall capacity in summer conditions, but more in winter conditions

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