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分析了双水管风机盘管加新风空调系统的全年运行调节方式、盘管中冷热水工况的转变时间及空调系统的运行能耗，得出以下结论：（１）风机盘管湿工况运行时，冷热水转换时间比干工况运行时间早；（２）干、湿工况下制冷机运行时间相同，但湿工况可提高制冷机运行效率；（３）过渡季采用湿工况运行时，可利用新风的热量，减少冷热量抵消。
The annual running regulation mode of double-pipe fan coil and fresh air air-conditioning system, the transition time of cold-hot water condition in coil and the energy consumption of air-conditioning system are analyzed. The conclusions are as follows: (1) (2) Operating hours of chillers in dry and wet conditions are the same, but wet conditions can improve the operating efficiency of chillers; (3) In the transitional season, the wet and hot water conversion times are higher than those in dry operating conditions; Working conditions, the use of fresh air can reduce the heat and heat offset.