Olshevskaya O. Development of methods for the analysis and calculation of effective microchannel air-cooled condensers

The dissertation is devoted in solving a relevant scientific and technical problem. This problem is increasing the energy efficiency and ecological reliability of the refrigeration machines and heat pumps through introduction of new design types of the heat exchangers. New design types are based on miniaturization of equipment. Microchannel heat exchangers and, particularly, microchannel air-cooled condensers are discussed in the dissertation. In the dissertation was developed the methodology for calculations of thermotechnical characteristics of the microchannel condensers based on mathematical models of heat transfer, fluid- and aerodynamics (a) of two-phase flow of a working fluid within a microchannel, and (b) of an air flow in a short channel of complex configuration.