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。
2
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。
3
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.