Constant Air Volume

Constant air supply volume, positive pressure control, choosing of terminal filter are key points to attain cleaning grade of room.

对于洁净室而言，恒定送风量，正压控制，末端过滤器的选择是达到室内洁净度的关键。

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According to some statistics, Variable-Air-Volume ( VAV) air-conditioning systems can save energy by 30% to 50% when compared with conventional Constant-Air-Volume ( CAV) ones.

据统计，变风量（Variable-Air-Volume，VAV）空调系统比常规的定风量系统可节能30%至50%。

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Analyses the temperature control rules to realize economic operation of constant air volume systems. Proposes an improved control strategy based on the indoor temperature control. Compares the energy consumption of HVAC systems in different strategies by using a simulation program.

分析了在定风量系统中实现经济运行的温度控制原则，提出了考虑室内温度控制的新风系统经济运行控制策略，利用模拟程序对不同控制策略下的空调系统能耗进行了比较和分析。

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Finally conducts a deepening research and redevelop on the control strategy and system scheme for the on-off constant air volume air conditioning system which configured the new type fresh air handling unit, designs a set of practical control system for hospital air conditioning system.

最后对配置了新型新风专用处理机组的双位定风量空调系统的控制策略和系统方案进行了深化与再开发，设计出一套实用的医院空调系统的控制体系。

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The fundamental principal of the CAV air-conditioning system is introduced. According to the mathematical model of the room in the way of the CAV ( Constant Air Volume), the mathematical model of the room in the way of CAV is deduced.

本文介绍了定风量空调系统的基本原理，着重对定风量（CAV）空调系统房间数学模型进行了推导。

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Most of the traditional mine ventilator use direct startup methods with constant speed, achieve air volume regulation by adjusting the blade angle of the fan and the tailgate of air passage. The method is simple but has great ventilation resistance caused a lot of wasted energy.

传统矿井通风机的控制大都采用直接启动方式，电机恒速运行，通过调节风机叶片角和风道挡板实现风量调节，该方法简单但通风阻力大造成电能大量浪费。

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I completed experiment of constant air volume system and variable air volume system of the simulation systems in the laboratory.

在实验室里完成了模拟系统中的定风量一次回风系统和变风量系统的实验。

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Considering the special need of die air conditioning in the communication plant, discusses four kinds of air conditioning control scheme and points out that the Constant Air Volume Air-Conditioning System should be the best air conditioning control scheme of the communication plant.

针对邮电大楼中邮电机房对空调参数的特殊要求，探讨了邮电机房的几种可行空调控制方式，提出并实际验证了采用定风量全空气系统在邮电机房中使用的优点与可行性。

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However, the characteristic of VAV system is multivariable, strong coupling, time-varying and nonlinear. So its operation and control will be more difficult than constant air volume air conditioning system.

但是，变风量空调系统具有多变量、强耦合、时变、非线性的特点，因此它的运行和控制都会比定风量空调系统难度大。

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