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Air flow characteristics in microchannel condenser.

[In Ukrainian. / En ukrainien.]

Author(s) : OLSHEVSKA O. V.

Type of article: Article

Summary

Constantly increasing electricity rates and requirements to reduce the harmful impacts on the atmosphere have made from the increasing energy efficiency of equipment in the heat pumps and refrigeration industry stable trend in recent years. Searches of new types of heat exchangers led to the use of microchannel heat exchangers as refrigeration machines condensers. The classification groups for these heat exchangers are compact plate-fin devices, which have air as one of the streams. Features of the motion a
t presence of the simultaneous formation of laminar and turbulent boundary layers are described. On this basis heat transfer and aerodynamic characteristics of air flow in the microchannel condenser are described. These characteristics were calculated in a
wide range of air velocities for a particular model of heat exchanger. Results of theoretical calculations have been compared with experimental data of various authors. The convergence of the obtained results is traced, which confirms the accuracy of the
theoretical study

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