公共建筑全空气空调系统节能运行研究——以青岛市某博物馆展厅为例

Research on Energy-saving Operation of Full Air conditioning System in Public Buildings--An Example of the Exhibition Hall of a Museum in Qingdao

公共建筑由于面积大、可容纳人数多、负荷波动大,对建筑内空调系统运行调节有较高要求。为满足室内人员舒适度的同时兼顾空调系统节能,基于青岛市某博物馆展厅全空气空调系统CFD仿真模型,分析了不同室内人员数量及不同室外气象参数下空调系统的送风量变化,得出空调系统在夏季设计工况下,额定175人时的不同室外气温下的最佳风量为7 000 m3/h;室内人数由175人减少至30人时的最佳风量由7 000 m3/h降至3 000 m3/h。通过对不同工况下空调系统送风量的精确适配,在保证室内人员舒适性的前提下,空调系统总节能率最高可达55.81%。研究结果对于公共建筑空调系统节能运行管理具有重要的指导意义。

Public buildings have high requirements for the operation and regulation of air conditioning systems in buildings due to their large area,large number of occupants and large load fluctuations.In order to meet the comfort of indoor personnel while taking into account the energy saving of the air conditioning system,based on the CFD simulation model of an all-air air conditioning system in the exhibition hall of a museum in Qingdao City,the change of air supply volume of the air conditioning system with different numbers of indoor personnel and outdoor meteorological parameters is analysed,and it is concluded that the optimal air flow of the air conditioning system under the design conditions in the summer is 7000 m³/h with different outdoor temperatures at the time of the rated 175 people,and when the number of indoor people decreases from 175 to 30,the optimal airflow decreases from 7000 m³/h to 3000 m³/h.By accurately adapting the airflow of the air-conditioning system under different working conditions,the total energy saving rate of the airconditioning system can reach up to 55.81%under the premise of guaranteeing the comfort of the people in the room.The results of the study are of great significance in guiding the energy-saving operation and management of air-conditioning systems in public buildings.