HEAT EXCHANGER Russian patent published in 1995 - IPC

FIELD: refrigeration. SUBSTANCE: heat exchanger comprises coil for coolant made of a finned flat multichannel pipe with inlet and outlet manifolds and is provided with additional coil connected to inlet and outlet manifolds. Coils are made with a variable pitch S₁ and S₂ and are so arranged with relation to each other that the loops with a smaller pitch of one coil are located inside the loops with a larger pitch of the other coil, the latter having straight sections on turns. EFFECT: intensified heat exchange with retained compactness of heat exchanger. 1 dwg