基于EnergyPlus对北方地区应用夜间机械通风预测

Application Analysis on Night Mechanical Ventilation in Northern Areas Based on EnergyPlus

目的为了分析哈尔滨、北京、沈阳等北方地区办公建筑应用夜间通风的状况.方法利用能耗模拟软件EnergyPlus对该地区某办公建筑夜间机械通风进行了节能性和经济性分析.结果夜间通风大大降低白天负荷,节省运行能耗,具有一定的经济意义.结论夜间通风模式下室内环境满足热舒适标准,人工制冷阶段夜间通风室内热环境明显优于常规空调模式.哈尔滨、北京和沈阳地区适合进行夜间机械通风的日期分别为约60 d7、0 d和40 d.

This paper analysed the energy consumption and economy of office buildings with night mechanical ventilation in Harbin, Beijing and Shenyang based on the energy-consumption software, EnergyPlus. The principle for night mechanical ventilation was given. And the application potential of office buildings with night mechanical ventilation in other areas was estimated. The results show that night ventilation greatly reduces cooling load, and it is more energy-saving and economical. In active cooling stage, the indoor thermal environment of night ventilation is much better than that in the conventional air-conditioning mode. It is about 60 days that night mechanical ventilation may be used in office buildings in Harbin. And it is about 70 days and 40 days for Beijing and Shenyang, respectively. Night mechanical ventilation may be used in office buildings in Urumchi and Lanzhou.