shortage of heat

It also includes decrease of thermal efficiency, shortage of output, decline of furnace temperature, ash deposite and corrosion of tail heat surface, increase of fan electricity cost, lower reliability of long period running, and bigger stoker labor strength etc.

燃烧劣质型煤时会造成锅炉热效率降低、出力严重不足、炉膛温度降低、锅炉尾部受热面堵灰腐蚀、增大风机电耗、长期运行可靠性差、司炉劳动强度大等一系列问题。

According to field experience, this paper analyzed the structure feature, welding shortage and reason of large-scale heat exchanger ( e.g. horizontal pipe gas-cooling machines, rectangular parallelepiped) and the main technology and optimized measures in key step during manufacturing.

结合现场施工实践，分析了大型换热器（横管式煤气冷却器，外形为长方形）的结构特点、焊接缺陷与产生原因，以及制造中关键环节应采取的主要工艺及优化技术措施。