Advanced disturbance elements for improving pipe performance

A tube for a heat exchanger defining a fluid circulation channel,

• wherein the channel extends along a longitudinal direction and comprises a first flat wall comprising at least one pair of disturbance elements,
• wherein the pair of disturbance elements is formed by a first disturbance element and a second disturbance element,
• wherein the first and second disturbance elements are formed by a local deformation of the first flat wall toward the inside of the tube,
• wherein the first and second disturbance elements extend between a first base and a first crest and between a second base and a second crest, respectively,
• wherein the first crest has an elongate shape along a first straight line and the second crest has an elongate shape along a second straight line,
• wherein the first straight line intersects the second crest, and
• wherein a third straight line, parallel to the longitudinal direction and passing through the center of the first base, intersects the second base,
• wherein the first crest and the second crest have the same length, the length being measured between the two free ends of the crest in question,
• wherein two successive pairs of disturbance elements are aligned along the longitudinal direction and are spaced from one another by a pitch of between 2 and 6 mm, and
• wherein the tube comprises additional disturbance elements and wherein a crest of the additional disturbance elements has a different shape than the crest of the disturbance elements.