摘要
冷板辐射加置换通风空调系统在保证室内环境的前提下比常规全空气空调系统节能,但在天气湿热的香港地区应用会出现冷板凝露现象,且采用置换通风方式,风量有限从而影响热舒适性。本文将干式风机盘管系统与独立除湿通风系统组合应用于香港地区办公楼,干式风机盘管系统处理室内显热负荷,独立除湿通风系统承担室内湿负荷和室外全热负荷。采用EnergyPlus软件模拟分析了该空调系统在香港地区某办公楼中的使用性能,结果表明该系统能很好地控制室内温、湿度,特别是湿度,与常规全空气空调系统相比,全年节能达10.3%。
The chilled ceiling cooling system with displacement ventilation can be used as an alternative to all-air cooling system to save energy and maintain indoor thermal comfort.Unfortunately,a chilled ceiling cooling system may cause condensation on the ceiling surface under hot and humid climatic conditions in Hong Kong.In addition,the displacement ventilation cannot provide sufficient air movement in the room and therefore results in poor indoor thermal comfort.In this paper,a scheme of dry coils（DC） system integrated with dehumidified ventilation（DV） was proposed,the DC system treated the indoor sensible load and the DV system accounted for the indoor latent load and outdoor air total load.To evaluate the performance of the DCDV cooling system,the simulation work with the software of EnergyPlus for an office building in Hong Kong was conducted.It was concluded that the DCDV system could well maintain the indoor air conditions in acceptable comfortable range,especially for controlling the indoor air relative humidity.Compared with the conventional system,the year-round total energy-saving rate of the DCDV system could reach at 10.3%.
出处
《建筑科学》
北大核心
2011年第4期60-65,共6页
Building Science
基金
香港政府基金GCF(522709)
关键词
干式盘管
除湿通风
性能模拟
节能
dry coil
dehumidification ventilation
performance simulation
energy-saving
