Supercritical carbon dioxide leakage working medium recovery control method

Abstract

The embodiment of the present application provides a kind of supercritical carbon dioxide leakage working medium recovery control method, comprising, the rotational speed of main circulating compressor and the measured pressure of motor chamber are acquired in real time;Based on the geometric parameters of motor rotor in motor chamber, working medium physical property parameters and the rotational speed of main circulating compressor, the function relationship of motor wind friction loss and motor chamber pressure is established;Based on the thermodynamic parameters and efficiency parameters of recovery compressor, the function relationship of recovery compression power consumption and motor chamber pressure is established;The minimum point of total power consumption function is solved, and the optimal motor chamber pressure set value is obtained;According to the deviation of the optimal pressure set value and measured pressure, the operating parameters of recovery compressor are adjusted, so that motor chamber pressure approaches to the present application embodiment realizes the collaborative optimization of motor wind friction loss and recovery compression power consumption, reduces the total power consumption of system, and can adapt to main circulating variable working condition operation.