초록 ▼

A heat exchanger for use in connection with engine cooling systems is disclosed herein. The heat exchanger is typically considered a heat exchanger and comprises a plurality of rows of tubes, a pair of headers secured to the ends of the tubes in a mechanical and brazed joint for providing improved v

A heat exchanger for use in connection with engine cooling systems is disclosed herein. The heat exchanger is typically considered a heat exchanger and comprises a plurality of rows of tubes, a pair of headers secured to the ends of the tubes in a mechanical and brazed joint for providing improved vibration and torsional stress resistance and improved durability. More specifically, the tube include a plurality of dimples or tabulators arranged in opposed or non opposed relation agitate the fluid about the primary heat transfer axis to facilitate heat transfer from the hot fluid to the tube wall.

대표청구항 ▼

[ The embodiments of the invention claimed as exclusive property are as follows:] [12.] A method of cooling a fluid comprising the steps of:providing a cooling circuit including at least one flattened cooling tube, said cooling tube having a first substantially planar surface and a primary heat tran

[ The embodiments of the invention claimed as exclusive property are as follows:] [12.] A method of cooling a fluid comprising the steps of:providing a cooling circuit including at least one flattened cooling tube, said cooling tube having a first substantially planar surface and a primary heat transfer axis substantially perpendicular to the planar surface; andproviding said cooling tube with an array of inwardly projecting dimples for agitation of fluid flowing through the tube dimples in opposed vortices about the primary heat transfer axis to reduce boundary thermal resistance otherwise occurring at the wall, said tube having a lateral width W and a lateral spacing between adjacent dimples is approximately 0.3 W to maximize heat transfer and the dimples are spaced in a longitudinal direction at a spacing of approximately 0.8 W to minimize longitudinal pressure drop.