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从设计与运行角度对3种常见空调系统形式——风机盘管加新风系统、定风量系统、变风量系统的末端能效比进行了比较,比较内容包括市场典型厂家风机盘管、空调机、新风机单机末端能效比及考虑新风机后的综合末端能效比;同时对比了几栋大型公共建筑案例设计及实际末端能效比。结果表明,由于设计选型偏大等多种因素,设计末端能效比仅能达到市场综合末端能效比的一半。在设计阶段,输送相同的冷量,风机盘管加新风系统能耗为全空气系统的一半左右。除了运行良好的变风量系统,实际末端能效比均比设计值有所下降。从实际案例来看,风机盘管加新风系统的实际末端能效比在13左右,变风量系统为6,定风量系统只有4。
From the perspective of design and operation, the comparison of the end energy efficiency of the three common types of air-conditioning system, namely fan coil plus fresh air system, fixed air volume system and variable air volume system, is made. The comparison includes the typical manufacturers fan coil, air conditioner, The end-to-end energy efficiency ratio of the fan and the comprehensive end energy efficiency ratio after considering the new fan are compared. Meanwhile, several large-scale public building case designs and actual end energy efficiency ratios are compared. The results show that due to the design selection is too large and many other factors, the design end of the energy efficiency ratio can only reach the market end of the composite energy efficiency ratio of half. In the design phase, delivering the same cooling capacity, the fan coil plus fresh air system consumes about half of the total air system. In addition to a well-functioning VAV system, the actual end-point energy efficiency is lower than the design value. From the actual case, the actual end of the fan coil plus fresh air system energy efficiency ratio of about 13, variable air volume system is 6, air volume system is only 4.