地板送风空调系统

Air volume(m3/s) 0.05
NR at 1m 18
Quiet
2
3
0.11
25
4
5
0.15 units typically sub 30“Zone NR38 at 1m in room” 0.18 35 0.20 40
24
LECU or UFAC 温度分布
Turbulence: K - epsilon
15
顶回风下送风UFAC系统 Top return and bottom discharge UFAC system
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天花内回风下送风UFAC Ceiling return and bottom discharge UFAC
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风管回风下送风UFAC系统 Bulkhead return, bottom discharge UFAC
10
气流路径比较：传统系统VS UFAC Air flow path: Traditional VS UFAC
UFAC地板下送风空调系统
传统空调系统
11
来自百度文库
热空气往上走概念 Thermal Lift
• Warm air always rises. • Constant battle with supply air being distributed via high level. • Conventional Systems Condition Whole Space. • Higher Fresh Air Content. • Underfloor Air Conditioning supplies air in the same direction as Thermal Lift. • Occupied Space receives air at optimum temperature and highest fresh air volume. • Zone above head height is allowed to rise in temperature. • 热空气总是向上走 • 所以，往上走的热空气总是与高位送出来 的空气进行争斗 • 传统空调系统对整个空调区域进行空气调 节 • 需要更多的新风量 • 地板下空调系统的送风方向与空气自然流 动的方向相同 • 空调区域的人员所得到的是最优化控制的 温度，还得到最高的新风量 • 高于人员头顶的区域允许较高的温度
35
高位（天花内）回风后送风High Level (Ceiling) Return Rear Discharge
Downflow System
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前回风侧送风 Side Discharge Front Return
上送风系统
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后部中间回风，侧面送风Rear Side Discharge Rear Centre Return
29
UFAC典型安装应用 UNDER-FLOOR AIR CONDITIONING SYSTEMS TYPICAL INSTALLATIONS
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房间内下送风安装 Down flow System in room installation
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服务区或走廊安装，后送风/上回风Service Cupboard Installation Rear Discharge / Open Return
• A description of the Under-floor Air Conditioning System looking at the developments. • Typical Installation options. • Fresh Air Input. • The use of the System in high-rise buildings. • Energy saving benefits. • Sustainability benefits • The flexibility of the system. • Considerations for designers • • • • • • • • 地板下送风空调系统发展历史简介 可供选择的典型安装 新风处理和输入 在高层建筑中的使用 节能效益 可持续发展方面的收益 系统的灵活性 系统设计过程的主要考虑因素
12
地板下送风系统&风机模块 Traditional UFAC and Fan tile
地板空气散流器 Floor diffusers
不带格栅的风机模块 Fan Tile, grilles removed
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带送回风格栅的风机模块 Fan Tile, supply & recirculation grilles
维护方便 Easy maintenance
舒适度高 More Comfortable
2
Denco Officecool System
Zone Unit
Raised Floor 250 - 300 mm
Fan Tile or LECU
3
Denco Officecool 系统
区域空调机组
高架地板 250 - 300 mm 风机地板砖
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典型地板下送风空调系统 Typical Under-floor System
Typical Under-floor System With mechanical floor serving floors above and below 带设备层的典型地板下送风空调系统 设备层在中间，服务于上面和下面的各楼层
18
下回风下送风系统Bottom return, bottom discharge UFAC
19
LECU：局部环境控制机组 LECU: Local Environmental Control Unit
• 外观照片 External view picture
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LECU 外观照片 LECU external view picture
30kW
5
典型办公楼布局 Typical Flexible Office layout (1)
LECU均匀布局 区域空调机组放于办公室
6
典型办公楼布局 Typical Flexible Office layout (2)
根据需要，很方便地将热 负荷低的LECU移动到热负 荷高的地方
7
UFAC系统包含 UFAC Systems Coverage
8
办公楼空调系统-目的Office Air Conditioning Aims
办公室人员的理想舒适条件 Ideal Comfort Conditions for the Individual: • Warm Feet. • 脚部温暖 • Cool Head • 头部凉快 • No Draughts (Not Exceed 0.2 • 没有吹风感（风速不超过： m/s) 0.2m/s) • 空气运动良好（避免闷热不通风 • Good Air Movement (Avoid Stuffiness, Dilute Pollutants). 的感觉，污染物稀释良好）
• LPHW, heat pump or electric heating • Proportional control humidification • 40kW+ Now Available!!!
10kW 20kW
• 3种型号, 分别有1,2 & 3 风机模块 • 下送风/顶回风, 下送风/下回风 • 冷水制冷或直接膨胀制冷 • LPHW(低压热水加热），热泵加热或电加热 • 比例控制加湿 • 也可提供40kW的机组
(或 LECU)
4
区域空调机组 Denco Zone Unit
• Available in 3 models, 1,2 & 3 fan
modules
• Downflow / Top return, Downflow /
Bottom return. cooling.
• Chilled water or direct expansion
GEA Air Treatment Division GEA 空气处理系统部
Officecool ： Under floor air conditioning Officecool: 地板送风空调系统
GEA Heat Exchangers
1
OFFICECOOL –最优秀办公楼空调系统
节能 Energy efficiency
9
空调系统部件 System Components
• Chillers. • Pumps. • Dry coolers. • Cooling Towers. • Air Handling Units. Basically the same as conventional air conditioning systems. Underfloor Air Conditioning distributes conditioned air to the work space via the access floor plenum. • 冷水机组 • 水泵 • 干式冷却器 • 冷却塔 • 基本上与传统空调系统相同 • UFAC系统通过高架地板下的空间 形成送风箱，并将经过空调机处 理过的空气送到工作区域
上送风系统Upflow System
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新风输入 FRESH AIR INPUT
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新风接到区域空调机组进风口Fresh Air Input at air inlet of zone unit
地板风出风口 Floor outlets
Floor Outlets: • 地板出风口 • Floor Diffusers. Pressurised • 地板散流器出风：加压地板风帽 Floor Plenum. • 风机辅助送风：低压地板风帽 • Fan Assisted Distribution. Low • 地板散流器送风要求地板风帽有 Pressure Plenum. 较高的密封性 • Floor Diffusers require highly • 地板散流器送风也要求较高的送 sealed floor plenum. 风温度 • Floor Diffusers require high • 风机辅助送风对地板密封性要求 supply air temperature. 不高 • Fan Assisted does not require • 风机辅助送风可以使用较低的送 such highly sealed plenum. 风温度 • Fan Assisted can work with lower supply air temperature.
26
LECU or UFAC 气流速度分布
27
LECU or UFAC 温度场
LECU
LECU
28
LECU 优点 Fan Terminal Unit Advantages
• Low Pressure Floor Plenum. • Lower Supply Air Temperature (from AHU). • Flexible. • Personal Control. • • • • 地板下风压低 送风温度低 灵活 每个人自己控制
21
LECU 风阀转动 Fan Terminal Unit Damper Rotation
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LECU零部件组成 Fan Terminal Unit Components
PCB controls
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LECU风量和噪声 LECU Air Volume and Noise Levels
Fan Speed 1
低投资 Low investment
低运行费用 Low running cost
高度灵活 Highly flexible
降低办公楼层高 Reduce building height by 10%
个性化
分期投资 Investment in stages
系统简单
Personality
Simple system
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服务区或走廊安装，后送风/风管回风Service Cupboard Installation Rear Discharge / Ducted Return
33
室内高位格栅回风/后送风High Level (In Room) Return Grille/Rear Discharge
34
高位风管回风，回送风High Level (Bulkhead) Return Rear Discharge