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置换通风与混合送风供冷季运行能耗比较
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Comparison between annual energy consumptions of displacement ventilation
and mixing ventilation
摘要 根据置换通风和混合送风设计及运行的特点，以DeST为模拟工具，分析了北京某写字楼分别采用置换通风和混合送风方式供冷季空调系统的运行情况，讨论了两种送风方式在定风量或变风量运行时系统的逐时能耗及在室外新风利用上的特点。结果表明，置换通风比混合送风节省10%以上的运行费用。
关键词 置换通风， 混合送风， 节能
Abstract Based on the design and operation characteristics of displacement ventilation and mixing air supply, by means of DeST tool, analyses operation status of displacement ventilation and mixing air supply in an office building in Beijing in cool air supply season respectively. Discusses the hourly energy consumption of operation of displacement ventilation and mixing air supply under fixed air volume ad variant air volume and the characteristics of fresh air utilization outdoor. Results show that displacement ventilation can save more than 10% of operation cost compared to mixing air supply.
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