To clean air immediately a drive uses Recirculation filter.
要立即清洁空气过滤器的驱动器使用再循环。
Where there is no air recirculation: Where is the air intake, the air outlet and the preferred wind direction?
哪里没有再循环空气：在进气口，排气口和首选直流风的地方？
Integrated into the automatic air conditioning, Automatic Air Recirculation makes sure that pollutants in the air are not able to get inside the car.
自动空气再循环系统集成在自动空调主机内部，它的功能是防止空气中的污染物进入车厢内部。
Therefore, to alleviate the undue recirculation of contaminated air which may contain bacterial or viral agents, a complex set of filters along with ultraviolet lamps may be used.
因此，以减轻不必要的回流污染的空气可能含有细菌或病毒制剂，我们使用了一套复杂的过滤器与紫外线灯。
Automatic Air Recirculation, fitted as standard, detect s pollutants in the air outside, such as carbon monoxide, nitrogen oxide and ethanol, and ensures that they do not enter the vehicle
自动空气循环控制为M6的标准设备，它能够自动检测车外空气中的污染物(如一氧化碳、氧化氮和乙醇)将它们拒之车外。
Automatic Air Recirculation, fit ted as standard, detects pollutants in the air outside, such as carbon monoxide, nitrogen oxide and ethanol, and ensures that they do not enter the vehicle
自动空气循环控制为M6的标准设备，它能够自动检测车外空气中的污染物（如一氧化碳、氧化氮和乙醇）将它们拒之车外。
The idea of adding the lower windbreak around the air cooling platform was put forward to reduce the influence of hot air recirculation on heat exchange of the platform.
利用CFD软件对某300 MW机组空冷岛的换热进行了数值模拟，分析了不同风速对直接空冷凝汽器换热效率的影响，提出在空冷岛上加装下挡风墙，以减小热风回流对空冷岛换热的影响。
In the two different positions, from the burner jet to x/d=0.5, profiles of axial mean velocities for air and particles have two crest zones; in the centerline, air axial mean velocities falls evidently behind particle axial mean velocities, axial mean velocities for air and particles with the actual position reduce faster and particles penetrate some central recirculation zone beginning from x/d=1.5 cross section.
在2种扩口位置下，从燃烧器出口至x/d=0.5截面气、固两相轴向速度分布均呈双峰结构；在中心线处，气相轴向速度明显滞后于固相轴向速度，实际扩口燃烧器的气相、固相的轴向速度衰减速度快，且在x/d=1.5的截面开始，出现颗粒穿越部分回流区。
Based on the technology of exhaust gas recirculation, a new method for increasing thermal efficiency of a diesel hot air stove from a greenhouse was proposed.
针对目前使用的温室柴油热风炉存在的热利用率低和排放污染问题，提出了利用废气再循环技术来提高柴油热风炉热效率的方法，并研制出一种适用于温室内应用的全数字式智能监控柴油热风炉 EGR热交换设备，并阐明了其结构及工作原理。
Rotate and tilt the vacuum actuator as required to disengage the hole on the end of the actuator link from the hooked pin on the end of the recirculation air door lever.
视需要旋转并将真空引动器倾斜以放松循环空气门连杆末端上的勾销放松引动器连接末端上的孔。
Additionally, othet two new trails in the engine dynamic test stand are presented. One is newtype of insulation vibration base with air suspension, the other is water recirculation system for engine and FHD.
此外，本文尚在1200KW内燃机动态试验室建设方面做出了两项创新，它们分别是试验台空气弹簧隔振基础和液力测功器供水循环系统。
The first part is about flue gas chemcial reacts with FGD absorbent, which is theemphasis in FGD process. It mainly comprises gas inlet system: raw gas ducts, clean gas ducts, sealing air for the ducts, duct dampers, gas-gas-heater, booster fan, absorber sump for gas/liquid reaction, slurry recirculation system, oxidation air fan system and mist eliminator.
一是烟气与脱硫吸收剂进行化学反应的部分，该部分是脱硫工艺的重点，主要有烟气的引入系统，原烟道、净烟道、烟道密封空气、烟道档板、烟气换热器和增压风机等；用于液体和气体进行化学反应的反应器吸收塔、浆液再循环系统、氧化风机系统和吸收塔、除雾器等。
The main factor which influences the heat exchange performance of air cooled condenser is the backflow or recirculation of hot air caused by the environmental big wind.
摘 要：影响空冷凝汽器换热性能的主要因素是环境大风所造成的热风回流或热风再循环。
Maintaining premises above frost level may be obtained by placing the ventilation or air conditioning circuits in a particular configuration (with reduced airflow or under partial recirculation for instance).
而建筑物的温度要保持在严寒级别以上可能需要在个别结构内安装通风设备或者是空调线路（对于空气流通的不足或者是部分线路的不通畅）。
The electronic heating evaporator in the high-side gravity recirculation system in ANSI/ASHRAE 64-2500 standard is replaced by a new type plate evaporator which is more effcient and energy-saving, because the cold water outlet from the evaporator that is used to heat the cryogen can be used once again to cool the air in the air inlet trunk; an air processing unit is designed in the lab design, so to imitate all kinds of weather in each season in every location of China at any time the test is being made; the data selection system can send all the data in the test to the computer at one time, and to reduce the cost of the test some data which is more stable are read manually through traditional meters if this can not sacrifice the precision of the test.
本文的设计中用效率更高的新型板式换热器代替了原ANSFASHRAE 64——2500标准中压缩驱动循环系统中的电加热蒸发器，加热冷剂后得到的低温淡水还可以用于冷却进气通道中的空气，不仅提高了效率，而且更加节能；实验室方案中增加了空气处理系统，可以实现随时对全国各地各季节的空气状态进行模拟，方便实验的进行；采用数据采集系统将数据整体采集到电脑中方便数据处理，而且对于变化频率不高相对较为稳定的数据采取传统仪表进行人工读数，在保证测试结果准确性的前提下降低了成本。
The results demonstrate that raising the angel of whirl blade can intensify the mixture between the primary and secondary air, but is not always good for external recirculation zone.
结果表明：叶片角度的增加可以促进一、二次风的混合，有利于内回流区的形成，但是对于外回流区的形成并不总是有利的。
Changing the ratio of the waist side air, size and temperature arrangement of recirculation zone can be changed, and the location and shape of flame is adjustable.
本文通过数值模拟和冷态试验分别研究了各股射流对燃烧器回流区的影响。
Analysis results show that the fuel utilization and excess air ratio are main design parameters impacting the power generation of this system; the main design variables impacting heat recovery of the system and electricity to heat ratio are fuel utilization and the steam to carbon ratio, and the influence of interaction between the two parameters on SOFC–CHP system is more evident than that of excess air ratio; the influence of cathode exhaust gas recirculation ratio on heat and electric power of the system is slight, so it is not regarded as the main design parameter of the system.
分析结果表明：影响系统发电功率的主要设计参数是燃料利用率和过量空气比率；影响系统热回收和电热比的主要设计变量是燃料利用率和水蒸汽与碳的比率，且这2个参数的交互作用较过量空气比率对系统影响显著；阴极排气再循环比率对系统热、电功率的影响甚微，不是系统的主要设计参数。
With hydrogen induction, NOX level increases, but smoke, HC and CO emissions reduce. In addition, hydrogen-enriched air is also used as intake charge in a diesel engine adopting exhaust gas recirculation technique. When HEGR technique is adopted, peak pressure reduces and the maximum rate of pressure rise and heat release increase at low load condition. But they are increase at high load condition. The HEGR technique can reduce NOX and smoke emissions simultaneously while the engine efficiency is improved.
掺氢燃烧会提高ZS195柴油机的热效率，经济性得到改善；掺氢燃烧可以减少HC、CO和烟度排放，但NOX排放增加；ZS195柴油机使用HEGR技术后，当EGR率一定时，随着掺氢率的增加，最大爆发压力、压力升高率峰值和放热率峰值都有所增加；ZS195柴油机使用HEGR技术后，能同时降低NOX和烟度排放，发动机的有效热效率略有改善。
The corner recirculation zone finally diminished with the coefficient of air consumption decreasing.
角回流区随空气消耗系数的减小最终消失。