Poteri ot neravnovesnogo regenerativnogo teploobmena v kholodil'nykh kompressorakh

The processes in the world around involve losses, and the task of any engineer is to take them into account at the stage of a machine design. But the losses may be concealed coming into being in one process and showing quite in another one. Such losses are the losses in the compressors owing to a nonequilibrium regenerative heat exchange. In some constructions they may be completely absent but in the others they may occur and lead to reducing the compressor output or showing in a different way. Today the methods of the thermodynamic calculation of a compressor don’t include a direct calculation of losses due to a nonequilibrium regenerative heat exchange. The paper analyses the mechanism of losses that appear due to regenerative heat exchange during the process of a cyclic gas compression in the compressor; the method to calculate such losses is cited. It is based on the analytic solution of the problem of the nonstationary heat conductivity in a semibounded body at harmonic boundary conditions. As an example to use the method were calculated the losses due to nonequilibrium regenerative heat exchange in the PB100 refrigeration compressor, the losses share of the compressor consumed power was defined. Keywords: compressors; work losses from nonequilibrium regenerative heat exchange in the compressor; thermodynamic calculation of a compressor; entropy analysis

компрессоры, потери работы от неравновесного регенеративного теплообмена в компрессоре, термодинамический расчет компрессора, энтропийный анализ