回风口

根据对梳脱滚筒作业速度的理论分析并结合田间试验，得出与较小的喂入口间隙及回风口的过流面积相配，梳脱滚筒齿顶线速度取15～16m／s的较佳参数。

Based on theoretical analyses for working velocity on stripping rotor and linked field practice , we obtain the optimum parameters adopted 15 ~ 16m / s of linear velocity of the stripping rotor , that mutually cooperate with smaller clearance of feeding mouth and area of air return opening .

分析了侧墙回风口布置对空气分布的影响；

The influence of the side wall return air inlet to air distribution is analyzed .

由于回风口位于车厢两端，车厢中部和端部PMV分布不同，端部人体热舒适感较好，中部较差；

The air return ducts are located at the two end parts of the car and PMV distributions differentiate between the middle and the end parts of the cars , so the thermal comfort in the middle is inferior to that in the end parts ;

关于高级别洁净室回风口的设计应用

Design & Application of Return Air Inlets in High-level Cleanroom

空气净化系统回风口过滤装置贴附尼龙网的效果评价

Assessment of Cleaning Effect by Replacing Filtering Apparatus Return-Wind Exit with Nylon Nets

回风口数目对对流热转移量的影响很小，可以忽略不计。

The number of air inlet has a little influence and it can be neglected .

结果表明：回风口与送风口同侧布置、异侧布置对置换通风的气流组织影响不大，置换通风在大空间建筑空调中有应用价值。

The results indicate the influence is little and the replacement ventilation can be used for air-conditioning in large space buildings .

空调机组的启停状态对天花板区域和回风口的烟气浓度有显著影响。

The ON / OFF status of AHU played an important role in affecting the smoke concentration at the ceiling region and outlets .

假设改变回风口格式能让流入空气在到达操作台之前全部流走，就能避免实验样品被污染。

If changing the air inlet modes makes all external air flow away before reaches operating area , experimental samples can avoid pollution .

通过分析回风口高度对车厢内温度场分布的影响规律，提出多温区冷藏车纵向导轨设计。

By analyzing the laws of air return height affecting the compartment temperature distribution , this paper presents multi-temperature refrigerated trucks vertical rail design .

针对加热器回风口和方箱是噪声向外辐射的必经途径，本文主要从消声器消声设计、方箱隔声设计两个方面出发，探讨了不改变加热器结构的降低噪声方法。

Seeing that the noise radiates through the inlet of air and iron box , a silencer for the inlet and a rectangular enclosure are designed .

配电间门口、空调间回风口，必须预留一定的安全操作位置，配电间门口必须留出80公分的安全距离。

Distribution room and air conditioner 's air outlet must keep enough space for the sake of safety.80 cm safe distance must be kept in the distribution room .

空气进气口和回风口的设计一定要保证这些区域的低质量的空气和环境污染不会进入档案存在区域，一定要保证这些区域直接向外通风。

The air intakes and returns must be designed such that lower quality air and environment cannot affect the records areas , and must have direct venting to the outdoors .

采用顶送风侧回风方式时，回风口布置在一侧或布置在两侧对室内温度分布、速度分布、舒适度影响不大；

Adopting roof air supply and sidewall air return , setting backflow on both sides or one side , has fewer influence in indoor temperature distribution , velocity distribution and comfort level ;

当包间门敞开时，烟气大部分从门排出包间导致天花板区域和回风口的烟气浓度都处于低水平状态。

When the door was open , most of the smoke was exhausted out of the sleeping berth through the door which consequently led a low smoke concentration at the ceiling region and outlets . 5 .

结果表明置换通风在大空间建筑空调中有好的应用价值，回风口高度对室内气流动的速度场和温度场的影响不大。

The results indicate that the replacement ventilation can be used for air-conditioning in a large space building and the influence for velocity field and temperature field with the difference of height of return air is little .

当送风方式分别采用下送和侧送时，侧送时天花板区域烟气浓度较低，同时两回风口的烟气浓度差较小。

When sideward air supply was adopted , the smoke concentration at the ceiling region was lower than that of downward air supply , and the smoke concentration contrast of the two air outlets was smaller . 4 .

机组运行时天花板区域的烟气浓度较低，回风口烟气浓度较高；机组的运行能加快烟气在包间内部以及向包间外部空间的扩散。

Compared to the OFF status , the smoke concentration of the ON status at the ceiling region was lower but higher at outlets . The AHU running can accelerate the smoke spread inside and outside the sleeping berth .