HELICAL-COIL HEAT EXCHANGER Russian patent published in 2010 - IPC F28D7/00 F28F9/13 

FIELD: heating.

SUBSTANCE: in helical-coil heat exchanger, which has multiple tubes wound along spiral into one or several concentric layers around central pipe and forming a bundle of pipes in the form of hollow cylinder, and jacket that limits external space around pipes, in which in process of heat exchanger operation heat is transferred between flows of at least two fluid mediums, one of which moves, at least along of pipes, and the other one passes through this external space around the pipes, there is at least one non-heat-transmitting elastic structural element, which is located inside jacket of heat exchanger radially outside bundle of pipes and contains metal material, besides heat exchanger may be used at the working temperature below ambient temperature, first of all below -40°C, for indirect heat exchange between hydrocarbon-containing flow and at least one heating or cooling agent, at the same time hydrocarbon-containing flow represents natural gas, and in process of indirect heat exchange it is liquefied, cooled, heated and/or evaporated.

EFFECT: helical-coil heat exchanger reliability improvement.

23 cl, 2 dwg