办公室温湿度独立控制空调需求控制通风模式的应用研究

发布时间：2018-04-21 08:21

本文选题：办公建筑 + 需求控制通风　；参考：《广州大学》2014年硕士论文

【摘要】：随着我国经济社会的发展，针对办公建筑存在的空调能耗大、新风能耗与室内空气品质相矛盾和无法适应人员变化的问题，提出与温湿度独立控制空调相结合的需求控制通风（DCV）运行模式，即在夏季供冷阶段，采取变新风量的方法控制房间湿度，同时满足室内人员实时新风需求，以减少新风能耗，提高室内空气品质。本文提出与需求控制通风策略相适应的两种空调形式：辐射吊顶加置换通风和干盘管加独立新风系统，以解决变新风量送风不均的问题，并介绍了两种空调形式的特点和设计方法，以广州某办公室为例对两种空调形式进行设计说明，最后运用CFD软件Airpak对两种空调形式下的房间气流组织进行模拟，比较验证了两种空调形式下的室内热舒适性和空气品质。模拟结果表明：（1）两种空调形式下房间速度分布、温度分布、湿度分布符合各自通风特性，并且满足空调房间要求。（2）两种空调形式工作区相对湿度低于60%，辐射吊顶附近最大含湿量为12.2g/kg，辐射板表面不会出现结露现象。（3）两种空调形式下工作区PMV-PPD值分别为0.836/22.3%和0.94/25%，满足热舒适等级Ⅱ级要求，两种空调形式下工作区ADPI值分别为85%、81%，，满足气流组织要求。（4）以室内湿度计算两种空调形式通风效率分别为1.3和0.9。以上结果表明，辐射吊顶加置换通风空调形式和干盘管加独立新风空调形式在设计工况下都能满足气流组织的要求，且前者热舒适性和空气品质优于后者。本文介绍了应用于办公室与温湿度独立控制空调结合的需求控制通风模式，给出相应空调系统的设计方法，希望对办公建筑的空调系统的设计方法提供一些建议。
[Abstract]:With the development of economy and society in our country, the energy consumption of air conditioning in office buildings is large, the energy consumption of fresh air is contradictory with indoor air quality and can not adapt to the change of personnel. This paper puts forward the running mode of DCV combined with independent control of temperature and humidity, that is, in the summer cooling stage, the method of changing fresh air volume is adopted to control room humidity, and at the same time to meet the real time fresh air demand of indoor personnel, so as to reduce the energy consumption of fresh air. Improve indoor air quality. In this paper, two types of air conditioning systems, namely radiation ceiling plus displacement ventilation and dry coil unit plus independent fresh air system, are put forward to solve the problem of uneven air supply with variable fresh air volume. The characteristics and design methods of two kinds of air conditioning forms are introduced. Taking an office in Guangzhou as an example, two kinds of air conditioning forms are designed and explained. At last, the air distribution of two kinds of air conditioning forms is simulated by CFD software Airpak. The indoor thermal comfort and air quality of the two air conditioning forms are compared and verified. The simulation results show that the room velocity distribution, temperature distribution and humidity distribution in the two air conditioning systems conform to their ventilation characteristics. The maximum moisture content near the radiation ceiling is 12.2g / kg, and the surface of the radiation plate will not be exposed. The PMV-PPD value of the working area is 0.836 / 22.3% respectively under the two kinds of air conditioning forms. (2) the relative humidity of the working area is less than 60 g / kg, and the maximum moisture content near the radiation ceiling is 12. 2 g / kg, and there will be no condensation on the surface of the radiation plate. And 0.94 / 25, meeting the thermal comfort class II requirements, The ADPI value of the working area in the two air conditioning forms is 85 / 81, which meets the requirements of airflow organization.) the ventilation efficiency of the two air conditioning forms is calculated by indoor humidity as 1.3 and 0.9 respectively. The results show that both the radiation ceiling and displacement ventilation air conditioning and the dry coil and independent fresh air air conditioning can meet the requirements of airflow organization, and the thermal comfort and air quality of the former are better than the latter. This paper introduces the demand control ventilation mode which is applied in the combination of office and temperature and humidity independent control air conditioning, and gives the design method of the corresponding air conditioning system, hoping to provide some suggestions for the design method of the air conditioning system in the office building.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU831

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