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所谓工质的“最佳”初参数,是指使热效率最高的蒸发参数。在热效率中是否计入厂用电的影响,当然影响着最佳参数的数值。式(4)是未计入厂用电时的最佳初参数的计算式,即按总发电功率最大的原则选取。不少情况下,按达一原则选初参数是适宜的,比如地形有利、循环水具有自流条件时,或者把电厂循环水与农灌或其他供水需要结合起来的方案,都属于这类情况。在另外一些情况下,如果厂用电纯属电站的自身消耗,那么选取工质最佳参数时应计入
The so-called working fluid “best” initial parameters, refers to the thermal efficiency of the highest evaporation parameters. Whether thermal power included in the impact of plant electricity, of course, affect the value of the best parameters. Equation (4) is the formula for calculating the best initial parameters when not included in the plant power consumption, that is, it is selected according to the principle that the total generation power is the maximum. In many cases, it is appropriate to select the initial parameters according to the principle of reaching unity. For example, when the terrain is favorable and the recirculation water has gravity flow conditions, or a combination of circulating water of the power plant and irrigation or other water supply needs all fall into this category. In other cases, if the plant electricity is purely consumed by the power station itself, then the best parameters of the working fluid should be taken into account