【作者】 余玲； 杨俊； 余炼； 夏清梅；

【Author】 YU Ling1,YANG Jun1, YU Lian1,XIA Qing-mei2 (1. College of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China 2. Shaoyang University, Shaoyang 422000, China)

【机构】 武汉大学动力与机械学院； 邵阳学院；

【摘要】 对现在的能级计算方法进行了详细的分析,指出了它不能唯一地反映能量品质高低、不具可比性的不足,找出了出现问题的主要原因在于没考虑作为做功能力的相对性。在深入理解概念内涵的基础上,通过建立物质系与环境的复合系统的方法,分析了复合系统的能量变化,提出了新的能级定义,并依此具体给出了内能,焓和热流的能级计算公式。结论:新的能级计算公式始终有0<Ω<1(Ω——能级),满足不同状态的能量品质比较的要求。图1参5更多还原

【Abstract】 The deficiency of energy level which can not be the unique judgment to the quality of energy and is not easy to compare are stated, through the detailed analysis to the present calculation method of it. The main reason of the deficiency is found out to be the neglecting of the exergy’s relativity as work ablity. By going deep into the concept of exergy, a combined system including the substance system and the environment is founded to analyze the transformation of energy. On the basis of above, a new definition of energy level is presented and the specific formulations of inner exergy, enthalpy exergy and thermal flow exergy are afforded. Conclusion: The new formulation of energy level can meet the challenge of the quality comparison among energy in different states and always with the result of it 0<Ω<1(Ω—energy level). Figs 1 and refs 5.更多还原