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
Ground heatexchanger is an important component of the ground Coupled heat Pump (GCHP) system and a single U-tube is the most common type of ground heatexchanger.