| The research on the air conditioning matching of HAISHI SY-6480 microbus. To the question of hard circumstance and excessive affecting factors when Automobile Air Conditioning(AAC) is working. Based on the characteristic of scroll compressor and studying of the affecting of designed parameter, Summing-up experiential arithmetic of AAC heat exchanger and deciding the refrigerant charge by experiment. And on this, utilizing Simulink tools in Matlab set up the steady simulating model of AAC. For better veracity of simulating model, model is used lookup-table module to calculate the thermodynamic character of refrigerant, and datas of experience and test is combined in the compressor module, also the coefficient of heat transfer changing by running parameter is decided by computational procedure. In addition, choosing congruence step size solves the divergence of simulation procedure. Finally ,tests validate the feasibility of design. |
