drawings the invention is capable of other embodiments and of being practiced or of being carried out in various ways also it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting the use of u201c including u201d u201c comprising u201d or u201c having u201d and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items unless specified or limited otherwise the terms u201c mounted u201d u201c connected u201d u201c supported u201d and u201c coupled u201d and variations thereof are used broadly and encompass both direct and indirect mountings connections supports and couplings further u201c connected u201d and u201c coupled u201d are not restricted to physical or mechanical connections or couplings fig1 to 7 a and 7 b show exemplary embodiments according to the invention of heat exchangers said exemplary embodiments relating to the type often designated as u201c housingless u201d heat exchangers the illustrations of fig8 to 10 show different exemplary embodiments of another heat exchanger type in which the stack is arranged in a housing 30 fig1 can be regarded as a section through a part of a brazed heat exchanger according to the invention fig2 shows a perspective view of the heat.