On the base of both consideration of heat transfer performance and resistance, the optimization and research are carried out on single spiral duct double pipe condenser.

本文在综合考虑传热性能和摩擦阻力等因素的基础上，对单螺旋槽套管式冷凝器的结构进行了优化和研究。

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To reduce resistance from the suction section of pump, the water pump must be installed at the condenser inlet of air conditioner.

为减小泵的吸入段阻力，水泵必须装在空调机冷凝器进口。

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The relation between different design structure of single and double low-pressure heaters with flow resistance of the condenser throat and flowing stage in the throat was discussed.

讨论了内置单、双低加不同设计结构与凝汽器喉部汽阻以及喉部流动状态的关系。

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