Abstract: A first aspect provides a heat sink panel for receiving thermal energy from a photovoltaic panel. The heat sink panel comprises a shaped metal sheet, wherein at least part of the metal sheet is shaped into substantially parallel gutters. When attached to the photovoltaic panel, the gutters form channels between the heat sink panel and the photovoltaic panel. The gutters range from a proximal gutter end to a distal gutter end and the distal end and the proximal end comprise openings enabling an air flow through the gutters. Whereas known heat sinks comprise protrusions like parallel oriented fins, they do are not arranged to provide more or less closed channels at the back of the photovoltaic panel to enable a stream of air to flow through the channel. Channels do not have to be fully closed, smaller openings may be provided. An airflow may be provided by a chimney effect.

Abstract: A radial tire having a carcass ply (17) with an inside-to-outside turn-up portion (19) around each bead (13). In each bead portion (11) there is included a reinforcing ply 22 having portions (22A,22B) on each axial side of the bead (13). The axially outer portion (22A) adjacent each turn-up portion (19), and optionally the turn-up itself, extends radially outwardly of the bead (13), and the axially inner portion (22B) extends radially outwardly to terminate at a point (S) located on a line (Q--Q) which is substantially perpendicular to the carcass ply (17) and passing through the radially outermost end (R) of axially outer portion (22A), or the radially outermost end (U) of the carcass ply turn-up (19).