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办公楼中央空调设计
摘 要
本设计为天津市XX公司办公楼中央空调系统,拟为之设计合理的中央空调系统,为室内工作人员提供舒适的工作环境。建筑共四层，总面积为4446.9m2，首层净高4.2m，其他三层净高均为3.9m。要求采用空调夏季制冷冬季供暖。设计的空调系统采用风机盘管—新风系统,选用水冷机组制冷冻水供冷，冬季依靠市政集中供热采暖。
设计的内容包括：选定合适空调系统的类型并确定设计方案，计算部分也十分重要，例如：空调冷负荷的计算；空调系统的划分与系统方案的确定；冷源的选择；风系统的设计与计
算；室内送风方式与气流组织形式的选定；水系统的设计、布置与水力计算； 风管系统与水管系统保温层的设计等内容。除此之外，还需要进行空调末端处理设备及机房辅助设备及的选型。需要结合所选择的空调系统的特点及办公楼的建筑结构选择合适的空调机组及末端设备，合理的布置吊顶内风管与水管的位置。并根据所选择的空调机组选配合适的辅助设备：冷冻水循环水泵，冷却水循环水泵，开式水箱，冷却水塔，及相应的水管风管阀门等。
关键词：办公楼，中央空调，水冷机组，风机盘管—新风系统
THE CENTRAL AIR-CONDITION OF
OFFICIAL BUILDING
ABSTRACT
The design of central air-conditioning system for the building of a Tianjin company is aimed to get a comfortable working condition indoors. The total area of the building is 4446.97 m2. The system is designed to supply cool air in summer, and a fan coil units (FCUs)--fresh air system is selected and central screw water chillers are used to provide the chilling water needed. In winter, the municipal central points in this design are given as follows:
To design an appropriate air-conditioning system for the building, the overall analysis is important. This includes the
calculation, such as cooling load calculation, the estimation of system zoning; the design of air duct system and calculation; the estimation of air distribution method and the selection of relevant equipments; the design of water system and the analysis of its resistance losses; the plan of the insulation of air duct and chilled water pipes; etc.. Meanwhile, equipment selection is also an essential part of the design. According to the requirement, a fan coil units (FCUs)--fresh air system is appropriate. Thus，the main process equipment, i.e. the chiller, the fan coil units, the circulating water pumps, the cooling tower, are also determined in the design considering their characteristics and working conditions.
KEY WORDS: official building, central air conditioning, cooling water chiller
fan coil units (FCUs)--fresh air system
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