Electric arrangement, panel and heat exchanger

An electric arrangement comprising:

• a casing;
• a heat generating electric component arranged inside the casing;
• and
• a heat exchanger comprising a three dimensional lattice cell structure,
• the three dimensional lattice cell structure being arranged to conduct a dielectric cooling fluid from the casing at an exterior side of the casing for heat exchange with an ambient fluid, and back towards the casing for cooling of the electric component,
• the three dimensional lattice cell structure further comprising:
• a plurality of cells each comprising a plurality of openings in fluid communication with openings of adjacent cells in three orthogonal directions;
• and
• a plurality of ends closing respective cells of the three dimensional lattice structure to contain the dielectric cooling fluid within the three dimensional lattice cell structure and to promote flow of the ambient fluid around the plurality of ends, wherein the plurality of ends are substantially conical.