空调、防排烟设计各个风速的确定

1、空调、防排烟设计各个风速的确定空调各个风速的确定1. 建筑物冷负荷概算指标2. 送风风速标准逗留区之最大允许流速m/s人体状态长时间坐短时间坐轻工作重工作应用办公室餐厅商店轻工业工厂'舞厅冷却m/s0.100.150.200.30加热m/s0.200.300.350.453. 送风口之最大允许流速m/s应用场所盘形送风口顶棚送风口侧送风口广播室3.04.54.04.52.5医院疗房4.04.54.55.02.53.0饭店房间'会客室4.05.05.06.02.54.0百货公司'剧场6.07.56.27.55.07.0教室'图书馆'办公室5.06.06.0

2、7.53.54.54. 逗留区流速与人体感觉的关系流速m/s人体感觉00.080.1270.1270.250.330.380.381.52不舒适，停滞空气的感觉理想，舒适基本舒适不舒适，可以吹动薄纸对站立者为舒适感之上限用于工和局部空调5. 空调房间允许之最大送风温差。C送风方式下列房间咼度m6. 不同送风方式的送风量指标和室内平均流速ASHRAE送风方式单位地板面积的送风量l/sm工作区平均流速m/s换气次数1/h侧送百叶风口条形风口局部孔板送风顶棚散流器顶棚孔板送风364105155255500.130.180.100.180.100.180.100.250.050/p>

3、7低速风管系统的最大允许流速m/s注：1散流器中心距墙不小于1.0m，所服务的区域最好为正方形或接近正方形。2选用200x200的散流器，500立每小时，射程4.27m,风速3.5m/s，半宽度。3.27x0.8=3.2，总宽度为6x6m的区域8推荐的送风口流速m/s应用场所流速m/s播音室戏院住宅'公寓'饭店房间'教室私人办公室一般办公室电影院百货店'上层百货店、地下1.5 2.52.5 3.52.53.82.54.05.06.05.07.510.09. 低速风管系统的推荐和最大流速m/s通风、空调系统风管内的风速及通过部分部件时的迎面风速（m/s）表8-1推

4、荐风速最大风速部位居住建筑公共建筑工业建筑居住建筑公共建筑工业建筑风机吸入口3.54.05.04.55.07.0风机出口5.08.06.510.08.012.08.57.511.08.514.0主风管3.54.55.06.56.09.04.06.05.58.06.511.0支风管3.03.04.54.05.03.55.04.06.55.09.0从支管上接出2.53.03.54.03.04.04.06.05.08.0的风管新风入口3.54.04.54.04.55.0空气过滤器1.21.51.751.51.752.0换热盘管2.02.252.52.252.53.0喷水室2.52.33.03.0部件

5、名称进风百叶窗风量大于10000m3/h风量小于10000m3/h排风百叶窗风量大于8000m3/h风量小于8000m3/h空气过滤器1.板式过滤器1）黏性滤料2）干式带扩展表面，平板型（粗效）3）褶叠式（中效）4）高效过滤器（HEPA）2.可更换滤料的过滤器迎面风速部件名称迎面风速2.06.0加热盘管2.55.02.01.蒸汽和热水盘管（最小1.0，最大2.58.02.电加热器8.0)25裸线式参见生产厂家资料肋片管式1.04.0冷却减湿盘管2.03.0同风管风空气喷淋室参见生产厂家资料速喷水型参见生产厂家资料W3.8填料型6.09.01.3高速喷水型2.51.00.81.8暖通空调部件的典

6、型设计风速（m/s）表8-2卷绕型黏性滤料卷绕型干式滤料3.电子空气过滤器电离式1、高速送风系统中风管的最大允许风速，按表8-4采用。高速送风系统中风管的最大允许风速表8-4风量范围（m3/h）最大允许风速（m3/h）风量范围（m3/h）最大允许风速（m3/h）1000006800030225001700020.5680004250025170001000017.5125002250022.510000505015通风空调风管和出风口的最大允许风速（m/s）表8-3室内允许噪声级（dB）干管支管风口25353.04.0W2.0W0.835504.07.02.03.00.81.550656.07

7、.03.05.01.52.565858.012.05.08.02.53.5百叶风口叶片间的气流速度增加10%,噪声的声功率级将增加2dB，若流速增加一倍，噪声的声功率级约增加16dB。对于出口处无障碍敞开风口，表中的出风口速度可以提高1.52.0倍。10. 以噪音标准控制的允许送风流速m/s应用场所流速m/s图书馆，广播室住宅，公寓，私人办公室，医院房间银行，戏院，教室，一般办公室，商店，餐厅工厂，百货公司，厨房1.752.52.54.04.05.05.07.511. 回风格棚的推荐流速m/s位置近座位逗留区以上门下部门上部工业用流速m/s233443>=412. 通风系统之流速m/s系

8、统商业工业低速送风、最大流速送风'一般流速回风'最大流速回风、一般流速13611107.5913111313913高速'般13132513. 百叶窗的推荐流速m/s位置新风回风减湿器正面减温器旁通加热器旁通流速m/s2.5466247.51257.514. 各风口的送风量顶棚散流器送风量l/s尺寸mm送风流量m/s1.01.52.02.53.755.0250*250507095120175235300*30070100135170255340350*35090140185230350465400*400120180240295440590500*500190280380

9、470710945600*6002704105456801020136015. 侧送风口的送风量l/s送风口流速m/s送风口尺寸mm1.52.02.53.755.0250*1003040507095300*10035455585115400*100456075115150500*100557595145190600*1007090115170230750*10085115145215285900*100100135170255340250*150455570105145300*150507085130170400*1507090115170230500*15085115145215285600

10、*150100135170255340750*150130170215320430900*150155205255385515400*20090120150230305500*200115150190285380600*200135180230340455750*200170230285430570900*200205275340415685400*250115150190285380500*250145190240355475600*250170230285430570750*250215285355535715900*250255340430640855530*30017023028543

11、0570600*300205275640575685750*300255340430640855900*30031041051577010301000*505575951451901000*75851151452152851000*1001151501902853801000*1251451902403554751000*1501702302854305701000*1752002653305006651000*20023030538057076016. 低压风管尺寸选择表支风管主风管圆形风管直径mm当量短形风管尺寸mm风速m/s风量l/s风速m/s风量l/s3037125200X75125X

12、100125X1252.5503.060150250X75200X100150X12575100180275X100200X125175X1503.0100130200375X100175X125225X150200X1751504.0180230500X100375X125300X150250X175200X200200240250625X100475X125375X150300X175275X200225X2254.0250315280575X125450X150375X175325X200275X225250X2503005.0380300550X150450X175400X200350

13、X225300X250275X275400490330675X150550X175450X200400X225350X250300X300500600360650X175550X200475X225425X250350X300325X325560720380775X175650X200550X225475X250400X300350X3505.06606.0840400900X175750X200625X225550X250450X300375X3508001090430850X200725X225625X250525X300425X350400X3759501200460975X200825

14、X225725X250570X300500X350425X40010601340480950X225825X250650X300550X350475X400450X425120015905001075X225925X250725X300625X350525X400475X400130017505301050X250800X300675X350575X400525X450475X47516007.520005601175X280900X300750X350625X400575X450500X5006.0175022205801000X300825X350700X400625X450550X500

15、525X525215025006101100X300900X350775X400675X450600X500550X550225028306401225X3001000X350850X400725X450650X500600X550250031006601100X350925X400800X450725X500650X550625X57527509.034006801175X3501000X400875X450775X500700X550650X600320037007201300X3501075X400950X450825X500750X550700X600340041007401425X3

16、501175X4001025X450750X500800X550750X600360046007601275X4001100X450975X500875X550800X600725X6507.5390049007801375X4001175X4501225X500925X550850X600775X650430053008101475X4001275X4501100X5001000X550900X600825X650470057508301600X4001350X4501200X5001075X550975X600900X650510010.063008601725X4001450X45012

17、75X5001125X5501025X600950X650550069008801825X4001550X4501350X5001225X550425X3501000X650585075009101950X4001675X4501450X5001300X550500X3501050X650620080009402075X4001775X4501550X5001375X550475X4001125X6509.0680084009602200X4001875X4501650X5001450X550525X4001200X650730093009902375X4002000X4501750X5001

18、525X550525X4501250X65080001020010202150X4501850X5001625X5501475X600575X4501125X75086001090010402250X4502000X5001725X5501600X6001400X6501200X750920011.01170010702400X4502100X5001825X5501650X6001475X6501250X75010.098001240010902550X4502200X5001925X5501750X6001550X6501300X750105001320011202350X5002025X

19、5501825X6001650X6501500X7001375X750111001390011402450X5002150X5501900X6001725X6501575X7001450X750116001470011702575X5002275X5502000X6001800X6501650X7001525X750123001540011902700X5002375X5502100X6001900X6501750X7001575X750129001620012202900X5002525X5502200X6002000X6501825X7001675X75013500169001240300

20、0X5002750X5502350X6002075X6501900X7001750X750142001770012702750X5502450X6002000X6502000X7001825X7501700X80011.0148001830013003000X5502700X6002400X6502200X7002000X7501900X8001550012.01900013402900X6002600X6502300X7002100X7502000X8001700X900162001970013803000X6002800X6502500X7002300X7502100X8001800X900170002050014202700X7002500X7502250X8001950X9001700X10001550X110018