GAS-LIQUID HEAT EXCHANGER Russian patent published in 2008 - IPC F28D9/00 

FIELD: heating systems.

SUBSTANCE: invention is meant for heating and cooling gaseous or liquid media and can be used in heat engineering. Heat exchanger consists of two liquid circuits and cylindrical ribs arranged between them. The first liquid circuit is made in the form of a hollow ring, on upper or lower surface whereof there made are cylindrical ribs arranged symmetrically relative to the ring axis. In each rib there made are not less than two longitudinal slots arranged symmetrically relative to the ring axis. Inner part of the ring-shaped liquid circuit serves as a gas jet inlet connection. The second liquid circuit is made in the form of a hollow disk, on one side of which cylindrical ribs are provided symmetrically relative to the disk axis. In each cylindrical rib there provided are longitudinal slots in number equalling to the number of slots in cylindrical ribs of the ring-shaped liquid circuit, which are arranged symmetrically relative to the disk axis. Heights of cylindrical ribs of ring-shaped and disk-shaped liquid circuits are made equal, and distances between cylindrical ribs are chosen so that when attaching cylindrical ribs of the ring-shaped liquid circuit to disk-shaped liquid circuit plane till their tops touch each other, and when attaching tops of cylindrical ribs of the disk-shaped liquid circuit to ring-type liquid circuit plane till their circuit axes align, cylindrical ribs of each of them could be arranged with a clearance between cylindrical ribs of the other one so that between two adjacent cylindrical ribs of one liquid circuit is arranged a cylindrical rib of the other one, and longitudinal slots on adjacent cylindrical ribs are located at a maximum distance from each other.

EFFECT: providing high heat transfer from hot gas jet to the liquid at minimum heat exchanger size.

3 dwg