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为了使直膨式太阳能热泵在太阳能辐射在剧烈变化时仍能保持一定的加热温度,本仿真通过调整变频压缩机的运行频率f的方法,弥补太阳能低密度,间断性和不稳定方面的不足;应用集中参数法建立了太阳能集热板、变频压缩机和冷凝器和电子膨胀阀的数学模型,并用MATLAB软件进行迭代计算,构建变频压缩机与太阳能辐射强度的变化曲线,通过仿真可得结论:变频压缩机频率的改变可以很大的提高太阳能热泵的系统性能。
In order to make the direct-expansion solar heat pump keep a certain heating temperature when the solar radiation changes drastically, this simulation makes up for the shortcomings of low density, discontinuity and instability of solar energy by adjusting the operating frequency f of the inverter compressor; The mathematical model of solar collector plate, inverter compressor, condenser and electronic expansion valve was established by using the centralized parameter method, and the iterative calculation was carried out by using MATLAB software to build the curve of the variation of radiation intensity between inverter compressor and solar energy. Frequency inverter compressor frequency change can greatly improve the solar heat pump system performance.