本发明涉及一种钢铁流程能源效率计算方法，包括如下步骤：确定钢铁生产流程能源投入量；基于热力学第一定律和热力学第二定律分别计算得到各个工序的能源损失量和各个界面的能源损失量；根据各个工序的能源损失量和各个界面的能源损失量之和，计算得到钢铁生产流程能源损失量；基于钢铁生产流程能源投入量和钢铁生产流程能源损失量计算得到钢铁生产流程能效。本发明提供的钢铁流程能源效率计算方法，弥补了当前对钢铁流程能源系统能效评估的空白。

The invention relates to a method for calculating the energy efficiency of the iron and steel process, which comprises the following steps: Firstly, the energy input of an iron and steel production process is determined; Secondly, the energy loss of each process and each interface are calculated respectively based on the first law of thermodynamics and the second law of thermodynamics; Thirdly, According to the sum of the energy loss of each process and the energy loss of each interface, the energy loss of iron and steel production process is calculated;Fourth, the energy efficiency of steel production process is calculated based on the energy input of steel production process and the energy loss of steel production process. The energy efficiency calculation method of the iron and steel process provided by the invention makes up for the blank of the current energy efficiency evaluation of the iron and steel process energy system.