Trefimetaux

Trefimetaux S.a.

Nicolas Avanan

Pascal Leterrible

Guy De Hollain

Grooved metal tubes, with a groove-bottom thickness Tand outside diameter De, internally grooved with N helical ribs having an apex angle &#x3b1;, height H, base width L, and helix angle &#x3b2;, two consecutive ribs being separated by a groove, generally flat-bottomed, having a width L, with a pitch P equal to L+L, are characterized in that:

Grooved tubes for heat exchangers that use a single-phase fluid

Grooved metal tubes (), of outer diameter De, the tubes being grooved internally with N helical ribs () of an apex angle &#x3b1;, height H, base width Land helical angle &#x3b2;, two consecutive ribs being separated by a flat-bottomed groove () of width L, with a pitch P equal to L+L. These tubes are characterised in that,

Growing community of inventors

Talmontiers, France

Nicolas Avanan