SCIENTIFIC-TECHNOLOGICAL FUNDAMENTALS OF EJECTOR HEAT EXCHANGERS DEVELOPMENT AND THEIR APPLICATION IN DIFFERENT SYSTEMS

During the last decades world industrial projects are characterized by increasing of power consumption. Considerable contribution to the power balance is deposited by manufacture of refrigeration machinery. It is the challenge for development of information technologies, revising of fuel strategies revision in favor of natural gas and other factors. Burning of petroleum hydrocarbons is associated with greenhouse gas emissions into the atmosphere, which is an environmental problem. Therefore, an intensive search for alternative compression refrigeration continues. Ejector refrigerating machines can be attributed to the best solutions. However, the wide practical application depends on many constraints - low energy efficiency (small thermal coefficients compared with absorption chillers). The author focuses on a series of relevant issues related to economic efficiency in the power industry sector. Economic efficiency of ejector heat exchangers utilization in the branch depends on the quality of heat application and investments to such heat exchangers, as well as on the operating costs. The utilization of heat exchangers is based on the qualitative usage of contact heat exchange. The classification of the ejector heat exchanger utilization in various industry branches directly related to workflow systems is given.