夏热冬暖地区风扇辅助空调节能策略探讨

Energy-Saving Strategy of Electric Fan-Assisted Air-Conditioning System in Hot Summer and Warm Winter Area

空调能耗是建筑运行能耗中的重要组成部分。为了探究空调能耗的降低或替代途径,采用入室测试调查的方式了解当前夏热冬暖地区室内主要纳凉方式与特点,评估人群对于风扇辅助空调实现热舒适的可接受范围,分析空气流速在较高室温下达到一级热舒适水平的补偿作用。结果表明在风扇的作用下,将空调设计温度提高1~2℃被该地区受试者普遍接受。在夏季高温日对两个相似房间进行比对实验,通过设备能耗监测得出将空调设计温度提高2℃并采用电风扇辅助方式的节能效益显著。采用DeST软件模拟典型房间全年室内温度等参数变化特性,提出夏热冬暖地区风扇辅助空调的节能运行策略,减少空调运行时间和运行能耗,为建筑运行用能方式的改善提供理论依据。

Air-conditioning energy is an important part of the building operation energy consumption.The method of entry investigation is utilized to obtain the main indoor cooling methods and characteristics of hot summer and warm winter area currently,in order to find the ways to reduce or substitute air-conditioning energy consumption.People’s acceptable range of thermal comfort is evaluated by electric fan-assisted air conditioning.The compensation effect of the air velocity at high temperature room is analyzed for reaching the first-class thermal comfort level.The results show that the increase of the air-conditioning design temperature by 1~2℃could be generally accepted in this area under the assistance of the electric fan.Comparative experiments are conducted in two similar rooms on the high temperature day in summer to conclude that the energy-saving effect of increasing the design temperature of the air conditioner by 2℃and using the auxiliary mode of electric fan is remarkable through the energy consumption monitoring of the equipment.DeST software is used to simulate the annual indoor temperature and other parameter variation characteristics of the typical rooms.An energy-saving operation strategy is proposed for electric fan-assisted air conditioning in hot summer and warm winter areas to reduce the running time and energy consumption of air-conditioning.This strategy provides a theoretical basis for the improvement of building operational energy consumption.