某办公大楼的暖通空调设计探究

Exploration of HVAC design in an office building

暖通空调节能设计是建筑节能设计的重要环节,需要针对建筑的暖通空调进行设计,保证建筑的节能性和环境的舒适性。以某办公大楼为例,针对其暖通空调系统的冷热源、水系统、风系统及控制系统等进行设计,对比3种方案后选择冷热源为直燃机组,制冷站控制采用全变频自动化控制,并在夏季利用室外新风进行制冷,利用CFD模拟办公大楼的热环境。在实际运行中,采用楼宇自控系统对多种信息数据进行监测,及时调整送回风比例,以实现节能运行,建议开门通风换气时应当分批次少量开启玻璃门,优先开启东南侧的门,以免过多冷空气入侵。

Energy-saving design of heating,ventilation,and air conditioning(HVAC)is an important part of building energy conservation design.It is necessary to properly design the HVAC system of the building to ensure its energy efficiency and environmental comfort.Taking an office building as an example,this paper designs its HVAC system,including the cold and hot source,water system,air system,and control system.After comparing three schemes,it selects direct-fired units as the cold and hot source,and the refrigeration station control adopts full-frequency automatic control.In summer,it uses outdoor fresh air for cooling and utilizes CFD simulation to simulate the thermal environment of the office building.In actual operation,a building automation system is used to monitor various information data and adjust the supply and return air ratio in a timely manner to achieve energy-saving operation.It is also suggested that when ventilating by opening doors,glass doors should be opened in batches and in small quantities,and doors on the southeast side should be prioritized to prevent excessive cold air intrusion.