FIELD: cooling.
SUBSTANCE: disclosed are coolers with a closed circuit and evaporation condensers of coolants with elliptic cross-section pipes with spiral ribs, in which the air flow entering the unit is directed through the pipes in a direction parallel to the pipe axes and generally perpendicular to the ribs.
EFFECT: gives absolutely unexpected increase of productivity by 25 % in comparison with comparable units, in which air flow is directed across axes of pipes or perpendicular to them.
11 cl, 7 dwg
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