PLATE AND BAR SYSTEMPLATE AND BAR SYSTEM. Those are all-aluminium coolers manufactured by composing individually mutually perpendicular layers of prisms and bellows, separated from each other by a partition wall. In the final phase, this entire assembly is welded in a vacuum furnace. This type of coolers with composed core systems is characterized by a high level of resistance against vibrations and mechanical influences of environmental conditions. Its simple, yet highly effective construction allows production of various dimensional variants