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1·The analysis of the vibration performance of the large-sized tubular heat exchanger by using the finite element method is presented in the paper.

针对用于高温气体换热的列管换热器的设计，提出在传热计算中应考虑热辐射问题。

2·The preheating method includes heat-pipe exchanger, tubular heat exchanger, plate heat exchanger, heat medium exchanger and regenerative hot stove.

预热法包括用热管换热器、管式换热器、板式换热器、热媒式换热器和蓄热式热风炉。

3·The forms of failure in the tubular heat exchanger were described in this paper. The causes of failure were analyzed and the improvement methods were put forward.

阐述了管壳式换热器失效形式，分析了失效的原因，提出了改进措施。

4·Then SINOPEC engineering incorporation drew up the engineering drawing a-gain in 2002, and it was named as 《U shape tubular heat exchanger series engineering drawing》.

因此，中国石化工程建设公司于2002年重新绘制了工程图，并将其命名为《U形管式换热器系列工程图》。

5·Abstruct: The connection mode and welding technological process between tube and tube sheet, tube sheet and shell of low temperature tubular heat exchanger are discussed.

探讨了低温管壳式换热器的管子与管板、管板与壳体的连接方式及焊接工艺。

6·Heat exchange efficiency varies greatly with different structures of heat exchangers. Partial modification of the tubular heat exchanger can raise its heat exchange efficiency.

换热器的结构型式不同，其换热效率差别很大。对管壳式换热器结构做出局部改动，可以提高换热效率。

7·After the fabrication of the U type tubular mode heat exchanger core is completed, the shell side hydro-test shall be performed in order to protect the joints of the tube and the tube from leakage.

U型管式换热器芯子制作后应进行壳程水压试验，以确保管接头及管不泄漏。