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
Practical application shows that utilization requirements can be met by adopting the doubletube plate heatexchanger with mechanically expanded tube.
实际使用表明，采用机械胀管法制造的双管板换热器，可以满足使用要求。
3
An analytical model of thermal-hydraulic design and structural optimization was developed for a double-tube bundle heatexchanger of an integrated nuclear reactor.