PLATE-TYPE HEAT EXCHANGER FOR HEAT EXCHANGE BETWEEN TWO LIQUIDS AT DIFFERENT LARGE FLOW RATES

摘要

FIELD: heat engineering. SUBSTANCE: heat exchanger has several rectangular heat exchange plates 2a with inlet and outlet holes 5a, 6a and 7a, 8a in corners 9a, 10a, 11a, 12a. Each heat-exchange plate 2a has central heat exchange part 17a and two distributing parts 15a and 16a located between heat exchange part 17a and respective inlet and outlet holes 5a, 6a, 7a, 8a. According to invention, sizes of inlet and outlet holes (5a, 6a) for one of two liquids differ from sizes of inlet and outlet holes (7a, 8a) for other liquids. Distributing parts 15a and 16a of heat exchange plates create additionally larger hydrodynamic resistance for first liquid as compared with that for other liquid. EFFECT: enhanced efficiency.