METHOD FOR INTENSIFICATION OF HEAT EXCHANGE OF MEDIA AND HEAT-EXCHANGE APPARATUS REALIZING THE METHOD Russian patent published in 2005 - IPC

FIELD: heat-exchange apparatuses with fixed ducts for two heat-transfer agents, in which the ducts are formed by separating plates, having perforated fins located inside there ducts.

SUBSTANCE: the method for intensification of heat exchange of two heat-transfer agents consists in heat transfer by means of perforated fins separating the flow-through cavities of each heat-transfer agent into parallel-connected ducts, and plates separating the adjacent flow-through ducts of different heat-transfer agents; at a flow of heat-transfer agents through the parallel-connected ducts of the respective flow-through cavity, heat exchange of the heat-transfer agent with the perforated fins washed by it is intensified due to the flow of the heat-transfer agent through the perforated holes in the fins between the adjacent parallel-connected ducts as a result of fluctuation of static pressure differentials in them, or t a regular destruction of the boundary layer of the heat-transfer agent on them due to the location of the perforated fins in the direction of flow of the heat-transfer agent in approximately staggered order with formation of several successively positioned sections of parallel-connected ducts so that the perforated fin in the second and subsequent sections in the direction of flow of the heat-transfer agent is shifted across this direction relative to the perforated fins of the previous section. The heat-exchange apparatus has alternating flow-through cavities of cooling and cooled heat-transfer agents formed by the separating plates of heat-conducting material, besides, the flow-through cavities of both heat-transfer agents are separated into out-of-round in cross section parallel-connected ducts by the respective fins of heat-conducting material being in a heat contact with the separating plates, the perforated fins in each flow-through cavity even of one heat-transfer agent staggered with formation of several successively located sections of parallel-connected ducts so that the perforated fin in the second and the subsequent sections in the direction of flow of the heat-transfer agent is shifted across-this direction relative to both perforated fins of the previous section making up the duct just before the shifted perforated fin, the length of the fin in each of the successively located sections of the ducts of the cooling heat-transfer agent makes up 20 to 60 quotients obtained when the averaged duct section area in the section is divided by the averaged duct section area in the section to the averaged perimeter of one duct.

EFFECT: reduced weight and cross-section of the small-sized heat-exchange apparatus characterized by a sufficiently high heat transfer within a wide range of temperatures, pressures and flow rates of heat-transfer agents.

3 cl, 7 dwg