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从“量”与“质”的结合上规定了能的“价值”,从而解决了长期来在热力学和能源科学中没有任何一个参数可以单独评价能量价值的问题。在当今能源紧张的情况下,(火用)的合理利用问题已开始广泛被人们所重视。本文从(火用)的合理利用要求出发,经计算分析后提出必须使背压汽轮机的排汽温度与供热系统的供汽温度相匹配,否则将造成能源的浪费。最后还提供了为用户所选择方便的汽机初参数p_o和供汽温度t_(2n)的关系曲线。
The “value” of energy is defined by a combination of “quantity” and “quality,” thereby solving the longstanding problem of not having any single parameter in the thermodynamics and energy sciences that alone can evaluate the value of energy. In today’s energy-stressed situation, the issue of the rational use of exergy has begun to be widely regarded by people. Based on the reasonable utilization requirements of exergoe, this paper proposes that the exhaust steam temperature of the backpressure turbine must be matched with the steam supply temperature of the heating system after the calculation or analysis, otherwise, the energy will be wasted. Finally, the curve of the initial parameter p_o and the steam supply temperature t_ (2n) of the steam turbine which is convenient for the user to choose is also provided.