The good or bad energy consume of furnace was used to evaluated the high or low heat efficiency in the past.But heat efficiency,the tradition idea has very large one sideness.

• 过去常常用热效率的高低来衡量加热炉用能的好坏,然而,热效率这个传统概念带有很大的片面性,热效率并不是衡量和评价过程进行好坏的一种合理尺度。