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本文明确了电厂供电煤耗和发电煤耗的区别,通过统计数字说明了泵功在厂用电中的重要性。以单耗分析理论为基础,应用非平衡热力学思想,首次提出了热力系统在线监测的热力学第二定律分析方法中存在的流动阻力损耗重复计算的问题,并以某电厂热力系统一个回热加热器为例,对该问题进行了分析。在此基础上进行扩展,对加热器不同压差下的情况进行了分析。最后通过计算提出了可行的解决方案。完善了分析方法,提高了热力系统在线监测经济性分析的准确性。
This paper defines the power plant coal consumption and power generation coal consumption of the difference between the statistics show that the pump power plant in the importance of electricity. Based on the theory of unit consumption analysis, this paper presents for the first time the problem of repeated calculation of flow resistance loss in the analytical method of the second law of thermodynamics for on-line monitoring of thermal system. Based on the theory of non-equilibrium thermodynamics, As an example, the problem is analyzed. Based on this expansion, the heater under different pressure conditions were analyzed. Finally, a feasible solution is proposed through calculation. Improve the analysis method, improve the accuracy of the economic analysis of online monitoring of thermal system.