AKM42G-ACC2LB00 ACC2LB00 伺服电动机 Kollmorgen
空气流量：
从上图中的点A开始，返回空气通过系统上的过滤器，并被吸入
送风机。然后，空气被推入装置的双管道部分。它现在将分成两个管道，一个
一个将处理加热功能，另一个处理冷却功能：
路线一/冷却-空气进入冷却管道（C）。这里空气与外界空气混合。现在的空气
成为返回空气和外部空气的混合状态，并通过冷却盘管。在这里，空气被冷却
并且，取决于通过空气的露点，可以被除湿。经过冷却盘管后
空气将通过管道系统，并在混合箱（F）中与加热空气混合。
路线二/加热-空气进入加热管道（D）。在这里，空气将通过一组加热线圈
加热通过的空气。接下来，它经过加湿器。如果通过空气的相对湿度过低
加湿器将向空气中添加水分，并将继续通过管道系统向混合箱（F）移动。
混合箱–混合箱是管道系统中加热和冷却管道的位置
结合这里，加热的空气与冷却的空气混合以实现空间的期望温度。这个
空气的混合由一个传感器控制，该传感器调节进入的加热或冷却空气的风门，打开或
以确保正确的空气混合用于产生所需的供应温度。
混合箱之后，混合空气继续沿管道系统向下流动。空气通过扩散器（G），并且
进入空间。终，空气被抽回回流管道系统，并被推动通过回流风扇（I）。
从这里，它将被耗尽或返回到系统的开始以再次开始该过程。
制冷剂/供暖供应：
冷却盘管由冷却源供给，如冷却器、冷却塔或DX装置。制冷剂
进入冷却盘管，从通过的空气中吸收热量，并返回其来源，以解吸热量
在里面
加热线圈由热源（例如锅炉或电力）供给。来自这些线圈的热量传递到
穿过它的空气。
系统变化：
1.可以在冷却盘管之前或空气处理单元上的过滤器之前找到外部空气管道，
这取决于设计。
2.系统可具有多组过滤器以去除不同水平的杂质。
3.如果外部空气管道位于冷却盘管之前，则过滤器可能位于外部空气风门之前，或者
冷却盘管，用于处理进入系统的新空气。
4.系统可以利用旁路设置，其中如果不需要，空气可以转向通过盘管
治疗。
5.加湿管可能不存在于每个装置中。加湿盘管也可能出现在
冷却盘管。
6.如果送风机产生足够的吸力来抽吸空气，则每个机组上可能不存在回风机
穿过太空。
14
IPI在环境中实施可持续节能战略的方法（2017年）
可变风量（VAV）系统
组件/布局：
加热线圈
空气流量传感器
阻尼器
促动器
控制器
接触器
恒温器
空气流量：
VAV代表
AKM42G-ACC2LB00 ACC2LB00 伺服电动机 Kollmorgen
AKM42G-ACC2LB00 ACC2LB00 伺服电动机 Kollmorgen
Air Flow:
Starting at point A on the diagram above, return air passes through the filters on the system and is drawn into the
supply fan. The air is then pushed into the dual duct section of the unit. It will now separate into two ducts, one
that will handle the heating functions and one that will handle the cooling functions:
Route One/Cooling – Air enters into the cooling duct (C). Here the air is mixed with outside air. This air now
becomes a mixed condition of return air and outside air and passes over the cooling coil. Here the air is cooled
and, depending on the dew point of the passing air, may be dehumidified. After passing over the cooling coil the
air will proceed through the ductwork and be mixed with the heated air in a mixing box (F).
Route Two/Heating – Air enters into the heating duct (D). Here the air will pass over a set of heating coils that
heat the passing air. Next it passes over the humidifier. If the relative humidity of the passing air is too low the
humidifier will add moisture to the air and will continue moving through the ductwork towards the mixing box (F).
At the Mixing Box – The mixing box is the location in the ductwork where the heating and cooling ducts
combine. Here the heated air is mixed with cooled air to achieve the desired temperature for the space. The
mixing of air is controlled by a sensor that adjusts dampers on the entering heating or cooling air, opening or
closing them, to ensure that the right mix of air is used to create the desired supply temperature.
After the mixing box, the mixed air continues down the ductwork. The air passes through the diffuser (G) and
enters the space. Eventually the air is drawn back into the return ductwork and pushed through the return fan (I).
From here it will either be exhausted or returned to the start of the system to begin the process again.
Refrigerant/Heating Supply:
The cooling coils are fed from a source of cooling such as chillers, a cooling tower, or DX unit. The refrigerant
enters the cooling coils, absorbs heat from the passing air, and returns to its source to desorb the heat that it took
in.
The heating coils are fed from a heat source such as boiler or electricity. The heat from these coils is transferred to
the air passing over it.
System Variations:
1. An outside air duct can be found either before the cooling coil or before the filters on the air handling unit,
depending on the design.
2. A system may have multiple sets of filters to remove different levels of impurities.
3. If the outside air duct is before the cooling coil the filters may be located before the outside air damper or
cooling coil to treat the new air coming into the system.
4. A system may utilize a bypass setup where the air can be diverted past the coil(s) if it does not need to be
treated.
5. Humidification tubes may not be present in every unit. A humidification coil may also be present after the
cooling coil.
6. A return fan may not be present on every unit if the supply fan creates enough of a draw to pull the air
back through the space.
14
IPI’s Methodology for Implementing Sustainable Energy-Saving Strategies in Collections Environments (2017)
Variable Air Volume (VAV) System
Components/Layout:
Heating Coils
Air Flow Sensor
Dampers
Actuator
Controller
Contactors
Thermostat
Air Flow:
VAV stands for
AKM42G-ACC2LB00 ACC2LB00 伺服电动机 Kollmorgen
