置换通风和冷却顶板复合系统能耗分析研究

Energy Analysis of Cooled Ceiling Combined with Displacement Ventilation System

为了评价置换通风和冷却顶板复合系统性能及节能潜力,应用Energy Plus软件分别模拟了我国六个典型城市中采用不同除湿方式的置换通风和冷却顶板复合系统及带热回收装置的定风量系统供冷季的能耗进行对比分析。结果表明:置换通风和冷却顶板复合系统采用转轮除湿方式时总能源费用与冷却除湿方式相当;置换通风和冷却顶板复合系统可比定风量系统节约15%以上的运行费用,节能潜力因地区气候和能源价格而异。

To evaluate the system performance and energy saving potential of Cooled Ceiling/Displacement Ventilation （CC/DV）, the energy use of CC/DV systems with different dehumidification methods and constant air volume system with total heat recovery in six representative cities in China are simulated with the energy analysis program Energy Plus. Some conclusions are presented： the total energy costs of CC/DV system with desiccant dehumidification differs slightly from that with cooling dehumidification; the CC/DV system could save at loast 15 % total energy costs in comparison with constant air volume system, and the energy saving potential depends on regional climates and energy prices.