| 摘要 |
FIELD: heating systems. ^ SUBSTANCE: invention refers to heat engineering, and can be used in stationary and transport power plants, in heating systems, cooling systems, conditioning systems, and refrigeration engineering. Plate-type heat exchanger consists of plates with holes and channels between plates provided for heat carrier passage. On the plates throughout the surface thereof there provided at an equal distance from each other are moulded discrete hemispheric asperity members of two types with various sphere radii so that around one large member there arranged are eight small members located from each other at an equal distance, and tops of large and small members of discrete asperity are directed to different sides from the plate plane. In addition plates are installed in heat exchanger so that with adjacent plates the tops of members of similar size adjoin, i.e. either large, or small members only, owing to which adjacent channels formed between the plates and meant for hot and cold heat carrier passage have various equivalent hydraulic diameters. ^ EFFECT: enlarging relative heat exchanger area. ^ 2 cl, 5 dwg |
