A unit (1) for the transfer and distribution of a liquid (27) using
capillary action has an elongated shaft (2) and a screen (3). The
shaft (2) includes a first capillary medium (4) suitable for drawing
the liquid (27) from a reservoir (26) into the shaft (2) when
a bottom portion (20) of the shaft (2) is disposed in the liquid.
The screen (3) is connected to the shaft (2) and includes a second
capillary medium (5) suitable for receiving the liquid (27) drawn
by the first capillary medium (4) and distributing it over at least a major
part of the screen (3) where it evaporates.