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用有限时间热力学的理论分析一个由太阳能驱动的具有热阻、热漏、内不可逆性和补燃的定常流联合卡诺型热机循环;研究其在补燃作用下功率、效率和生态学指标的性能,利用不可逆因子表征循环的内不可逆性,并在傅立叶导热定律下对其进行优化;得到功率、效率和生态学指标之间的优化关系。结果表明:以最大生态学指标为目标对模型进行优化,可比以功率为优化目标时获得更高的效率和更小的熵产率。
A finite-time thermodynamic theory is used to analyze a solar-driven constant-current combined Kano-type thermo-mechanical cycle with thermal resistance, heat leakage, internal irreversibilities and make-up. The effects of power on efficiency, Performance, the irreversibility factor is used to characterize the irreversibility of the cycle, and the optimization is carried out under the Fourier thermal law; the optimal relationship between power, efficiency and ecological indicators is obtained. The results show that optimizing the model with the maximum ecological index achieves higher efficiency and smaller entropy yield than power optimization objective.