So when the underfloor air supply system is been used in engineering , different supply air speed will be adopted on the basis of different heat intensity of upside and low side of room . so to economize energy 所以工程上采用地板送风时，应根据房间上下部热源强度的不同，采用不同的送风速度，从而减少对流热转移负荷，在工程上达到最大的节能。
In order to discuss the quantifiable relation of air speed with human comfort and physiology stress , 20 subjects each in winter and summer of 2005 were exposed different air speed , and they had done some physiological testing and questionnaire 室内的热舒适性问卷调查得知,夏季空气流速的改变使得人体所感知的热感觉、气流感、湿度感和热环境满意度都有很大的变化,说明在夏季风速的提高可
The control laws of longitudinal and lateral - directional autopilot modes are designed based on root locus theory . the control laws of altitude holding mode , heading holding mode , auto - throttle control and air speed holding mode are designed as well 研究了无人机的飞行控制技术，利用根轨迹法设计了无人机的纵向与侧向姿态保持控制律，设计了高度保持、航向保持、自动油门及速度保持控制律。
This paper particularly analyzes the problem ' s status from the theory with the practice angle , by being introduced the manufacture process of the on - line monitor system for primary and secondary air speed of boiler , and puts forward an effective way to solve this problem 论文从理论和实际的角度对现存问题进行了详细分析。通过介绍电站锅炉一、二次风风速在线监测系统的研制过程，提出了解决该问题的有效途径。
First of all , this paper analyses present problems existing in the boiler combustion monitor system of power plants , then put forward the signification to realize precision measurement for the primary and secondary air speed of boiler and the necessary conditions to solve efficaciously this problem 本文首先分析了目前电站锅炉燃烧监测系统中存在问题，提出锅炉实现一、二次喷口风速准确测量的重要性以及有效解决该问题所需要满足的必要条件。
For the existing situation of primary air speed monitoring condition on boiler , a new instrument structure mode whose data acquisition board and display board are separated , and connected by communication to improve the reliability , reduce the cost and easy installation and maintain 摘要针对锅炉一次风速监测仪表的现状，提出一种新型仪表构成方式，将测量仪表的现场数据采集和显示功能分离，之间采用通信方式连接，以提高仪表的可靠性，降低成本，方便安装和维护。
In order to know about the relation between the indoor particle ' s concentration and time , the author educed a formula which shows the indoor particle ' s instantaneous concentration based on the indoor purifying model . the author also has analysed the relations between the indoor particle ' s concentration changing and some factors including the indoor particle ' s initialization concentration , outdoor particle ' s concentration , air speed , etc 在实际的工程应用中，需要知道室内颗粒物的浓度随时间变化的情况，本文建立了应用过滤材料的空调室内净化模型，推导出室内的颗粒物浓度瞬时式，并从理论上分析各种因素(室内初始颗粒物浓度、室外大气浓度、过滤风速及通风量等)与室内颗粒物浓度变化的关系，为实际的应用提供了指导。
According to finite element segmentation principle , by combining test with observation , the author has measured the air streamline and speed distribution of burning equipment in dally situation , which provides some guide for research of air field in hearth on cold and hot conditions . and the law is found of air speed distribution by measuring its speed and distribution of upper and lower deck on cold condition , thus it lays the foundation for analysis on hot condition . under four burning states , we measure the air speed in single , double - deck , and find out its corresponding distribution law 5 .根据有限元分割原理布置测点，采用降温方法，用k五江9106等仪器分别测出单双炉排燃烧方式4种不同工况下，该燃烧设备炉膛内coz 、 02 、 co气体浓度，并找到了随炉膛高度方向及深度方向变化规律;从燃烧原理分析评价了2种燃烧方式炉膛内coz 、 02 、 co气体浓度场分布特点及相应燃料层内干燥、干馏、氧化、还原、灰渣层厚度，肯定了双层炉排燃烧方式炉膛中c02 、 02 、 co气体浓度场分布合理性，从燃烧理论找出了最佳浓度场分布状态及燃料层内各反应层厚度。
So far , combustion monitor methods for domestic units are out of date with many reasons . as an important parameter to design and to guide boiler ' s combustion adjustment , the primary and secondary air speed of boiler have not realized real - time and precise measurement . combustion adjustment for boiler of power plants is on blind and semi - blind status 目前，国产机组的燃烧监测手段落后，作为设计和指导锅炉燃烧调整的重要参数- -锅炉一、二次风喷口风速，一直没有能实现实时、准确的测量，电站锅炉的燃烧调整缺乏科学的手段，直接影响着锅炉的安全、经济、洁净运行。
Finally to accomplish the development of air speed measure components being based upon above discussion , the paper chose rationally hardware equipments , such as the tiny pressure difference sensor , the data collection system , the industrial control computer etc , solved the communication interface problems of the hardware platform , compiled the system software of the air speed on - line monitor , and raveled out a series of technical problems about the signal real time conversion , transfer , modify , calculate , display and so on 在此基础上，对微差压变送器、数据采集系统、计算机等硬件设备进行了合理选型，解决了硬件平台的通讯接口问题。编制风速监测系统软件，解决信号实时转换、传递、修正、计算、显示等监测系统二次部分开发的一系列技术问题。
