《办公楼中央空调设计(风机盘管加新风系统毕业设计)》.pdf

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 height of the first floor is 4.2 meters,and the
other three floor’heights are all 3.9 meters. The air-condition 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 heating system is used to supply heat and
keep official room warm.
Some of the main 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
目 录 第一章 绪 论 ................................................................................................................. 1
第二章 系统方案的选择确定 ..................................................................................... 3
第三章 工程概况 .......................................................................................................... 5
§ 3.1建筑特点 ....................................................................................................... 5
§ 3.2建筑相关资料............................................................................................... 5
§ 3.3室外设计参数............................................................................................... 6
§ 3.4室内设计参数............................................................................................... 7
第四章 空调负荷计算 .................................................................................................. 8
§ 4.1围护结构瞬变冷负荷计算原理 ................................................................ 8
§ 4.1.1外墙和屋面瞬变传热引起的冷负荷 .............................................8
§ 4.1.2室内传热维护瞬时冷负荷 ..............................................................8
§ 4.1.3外窗瞬变传热引起的冷负荷..........................................................9
§ 4.1.4设备散热形成的冷负荷 ..................................................................9
§ 4.1.5新风冷负荷 ...................................................................................... 11
§ 4.2办公楼围护结构冷负荷计算 ................................................................... 11
§ 4.3各房间送风方式的确定 ........................................................................... 14
§ 4.4 办公楼新风量和新风负荷的确定 ......................................................... 15
§ 4.4.1新风负荷计算举例 .........................................................................15
§ 4.4.2办公楼新风冷负荷计算书 ............................................................16
第五章 风机盘管加新风系统选型计算............................................