Vertical heatexchanger is mainly divided into single U-tubeheatexchanger and double U-tubeheatexchanger.
垂直U型管换热器主要分为两种：单u型管换热器和双u型管换热器。
2
The design and research of the paper has certain reference value to shell-and-tubeheatexchanger especially U-tubeheatexchanger engineering design.
本文的设计与研究对于管壳式换热器尤其是U形管式换热器的工程设计具有一定的参考价值。
3
A description is made of the structural characteristics of the new-type U-tubeheatexchanger, and an introduction is given to its use in the crude methanol system.