综合传热系数和系统内气体流动阻力损失是评价换热器性能的重要指标。
Complex heat transfer coefficient and resistance loss of the moving gas inside system are important parameters to evaluate the characteristics of heat exchanger.
文中较详细地讨论了提高换热器综合传热系数的各种措施，还讨论了完善现有换热器和开发新型换热器等问题。
All measures to improve the complex heat transfer coefficient are discussed in detail together with the improvement of the existing heat exchanger and development of new types.
故在有旋流存在的管壳式换热器中，离心浮力对换热器传热性能的影响不可忽视。
Therefore, the influence of centrifugal buoyancy on the heat transfer performance of tube-shell heat exchanger with swirling flow was not negligible.
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