Gas dynamics cycles of thermal and refrigerating machines

摘要

In this paper ideal cycles of thermal and refrigerating machines are analysed, in which for closing are used gas dynamics processes of gas flow in channels with heat addition and heat rejection. Is shown, that for ideal processes the profitability of such cycles is equal to profitability of Carnot cycles. At the same time basic defect of Carnot cycles - large degrees of expansion in the turbine is eliminated. Moreover in an ideal cycle the process of compression of gas comes true in the cooled channel. There are open the questions of start of machines, working on these cycles, and also problem of adjustment of capacity. It is a lot of unsolved problems, connected to use of phase of transitions (evaporation and condensation). However for practical realisation of offered cycles more thorough theoretical and experimental researches is necessary.