| 1. | Hvac : 170t chiller , 5 " main pipe , totally 184 , 000cfm air volume
空调：冰水主机170吨5 ”冰水干管送风量184000cfm 。 |
| 2. | Make - up or , supply air must be provided in approximately equal to or a little bite less amounts than replace the kitchen air being exhausted
另外为防止厨房串味，应使排风量略大于送风量，以保持负压。 |
| 3. | We used anemometers and copper constantan thermocouple respectively to measure velocities and temperatures of all measuring points under various air volumes within the room
用热线风速仪、铜?康铜热电偶分别测量出不同送风量下的室内各个测点的速度和温度。 |
| 4. | Because the basic principle of variable air volume system is to meet the comfort conditions indoor by varying air flow rates , air distribution is rather important
由于变风量系统是通过改变送风量来满足室内舒适要求的系统，所以气流分布对于变风量系统是相当重要的。 |
| 5. | Meanwhile , we adopted air distribution performance index , temperature gradients and average velocity to evaluate and compare room air distribution under various air volumes
同时，用空气分布性能指标、温度梯度以及室内平均速度对不同送风量下的室内气流分布进行了评价和比较。 |
| 6. | It was analyzed the variables in the thermal comfort control in train air - conditioning by fuzzy control technique and get the air temperature as the parameter by directly control
对热舒适控制中的各变量进行了分析，采用模糊控制技术，选择空气温度作为直接受控的参数，并通过调节送风量来实现。 |
| 7. | The paper studies the static pressure control and minimum total supply air volume control of vav air - conditioning system by experiment at present vav air - conditioning system are all modelled by the method of mechanism analysis
本论文对变风量空调系统中的定静压控制和最小总送风量控制进行实验研究。 |
| 8. | However , due to the supplying air volume change corresponding to cooling or heating load change , such phenomena as uneven temperature and velocity distribution often take place , which lead to bad indoor air distribution and thermo - environment
然而在变风量空调室内，因为送风量随着室内负荷的变化而变化，经常存在温度和速度分布不均匀现象，导致室内不良的气流组织和不舒适的热环境。 |
| 9. | The improvement over system design was proposed in this work to eliminate the deviation , and a series of calculation methods for volume of air , temperature rise of pipe and design of cooling coil were established . the software for system design was developed on the basis mentioned above
本文对冰蓄冷低温送风系统设计方案、思路提出了更新，对系统送风量、风机风管的温升、冷却盘管等关键设计计算进行了深入的研究，提出了相应的计算方法。 |
| 10. | Genetic algorithm is used to optimize the parameters of pid controller that is used to control the plant lon ( local operating network ) is designed to control vav air - conditioning system . by this means the static pressure control and minimum total supply air volume control are experimented . the paper analyzes the coupling among loops , the whole system ' s stability and energy saving effect under the two control methods
针对目前变风量空调系统的模型都是用机理建模方法建立的情况，本论文用最小二乘法对机组部分进行系统辨识，建立了水阀?送风温度、变频风机?静压两个回路的模型，经验证比较接近实际系统；采用遗传算法对pid控制器的参数进行寻优，寻优结果令人满意；设计了变风量空调系统的lon控制网络，以此为实现手段，进行了定静压控制和最小总送风量控制，并在两种控制方式下，分析了各个回路的耦合情况、两种控制方式的稳定性和节能效果。 |
