FIELD: heating.
SUBSTANCE: preform of a radiator section of the secondary-surface radiator comprises support plates and cooling plates with rows of holes for cooling tubes, a manifold of a coolant and the cooling tubes connected to it, mounted in the said holes of the support and cooling plates. The tubes and the support and cooling plates are made of aluminium and/or aluminium alloy. The surface of the cooling plates, the support plates and tubes is prepared for soldering, welding or sintering in a flux medium. The radiator unit is proposed, made of the said preform, and the radiator comprising these sections.
EFFECT: simplification of the production technology, reduction of the energy consumption, saving of valuable copper and zinc, improved efficiency of heat transfer between the cooling tubes and the plates.
24 cl, 4 dwg
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