基于建筑墙体从空调负荷侧进行用电移峰填谷初探

Preliminary Discovery of Electric Peak Shaving and Valley Filling in Load-Side of HVAC Based on the Envelope

考虑到建筑围护结构墙体蓄热的性能,在冬夏季电网谷时段(22∶00-6∶00)不同的空调运行模式下,对办公房间的室内负荷以及能耗参数进行逐时动态模拟计算,分析了谷时段开启空调对工作时段房间空调能耗的影响。结果表明:在夏季谷时段2∶00-6∶00开启空调,可在工作时段降低17.8%的用电量;在夏季谷时段22∶00-6∶00以24℃开启空调,可在工作时段降低25.7%的用电量;不同谷时段运行方案下,冬季谷时段耗电将是工作时段节电量的近4倍;夏季谷时段的耗电将是工作时段节电量的近2倍。因此,若电网峰谷电价差大于2倍以上,并且在合适的设定温度下,夏季可以考虑开启谷时段的空调,具有一定的经济性。此外,本次实验与模拟是基于办公室蓄热性能良好这一特点进行研究的,因此所得结论在一定程度上适用于类似的建筑结构。

In view of the heat storage performance of the envelope,the parameters like heating load and energy consumption of the office were simulated hourly under different air conditioning operation modes during the valley period(22∶00-6∶00)in winter and summer,and analyzed the effects of opening air conditioning during the valley period on the energy consumption of the air conditioning during the work hours.The results indicate that electricity consumption can be reduced by 17.8%during work hours when the air conditioning was turned on from 2∶00 to 6∶00 in summer;when the air conditioning is turned on at 24℃from 22∶00 to 6∶00 in summer,the electricity consumption can be reduced by 25.7%during work hours.All the operating strategies show that the energy consumption during the valley period in winter is nearly four times of the total power saving during work hours,the consumption during valley period in summer will be nearly twice as much as the saving during the work hours.Therefore,if the price of electricity during the work hours is more than double that during the valley period,and at an appropriate setting temperature,air conditioning can be turned on during summer valley period,which has a certain economy.In addition,this experiment and simulation is based on the good heat storage performance of the office,so the conclusions can be applied to similar building structures to a certain extent.