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target="_blank">【鼓风机】风机生产厂å®?周口市通用鼓风机有限公å?/a> >> <a href="/html/list_1601.html" target="_blank">新闻资讯</a> >> <a href="/html/list_1606.html" target="_blank">风机知识</a> >> ‹¹è§ˆç›¸å…³èµ„讯</p> </div> <h1 class="dis_title">风机该如何进行选型åQ?/h1> <div class="dis_time"><span>来源:佚名 </span><span>发布日期:2014òq?9æœ?9æ—? </span><span>点击敎ͼš<Script Language="Javascript" Src="/item/GetHits.asp?Action=Count&GetFlag=0&m=1&ID=2635"></Script> </span></div> <div class="dis_intro">  通风é‡?   风机数量的确定根据所选房间的换气‹Æ¡æ•°.计算厂房所需总风é‡?˜q›è€Œè®¡½Ž—得风机数量.计算公式:N=V×n/Q其中:N--风机数量(å?,V--场地体积(m3),n--换气‹Æ¡æ•°(‹Æ?æ—?,Q--所选风机型åïLš„单台风量(m3/h).é£? </div> <div class="dis_content"> <div id="MyContent"><div>  </div> <div> <strong><span style="font-size:14px;">通风é‡?/span></strong></div> <div>  </div> <div> <span style="font-size:14px;"> 风机数量的确å®?æ ÒŽ®æ‰€é€‰æˆ¿é—´çš„换气‹Æ¡æ•°.计算厂房所需总风é‡?˜q›è€Œè®¡½Ž—得风机数量.计算公式:N=V×n/Q 其中:N--风机数量(å?, V--场地体积(m3), n--换气‹Æ¡æ•°(‹Æ?æ—?, Q--所选风机型åïLš„单台风量(m3/h). 风机型号的选择应该æ ÒŽ®åŽ‚房实际情况.ž®½é‡é€‰å–与原½H—口ž®ºå¯¸ç›¸åŒ¹é…çš„风机型号.通风[2] 风机与湿帘尽量保持一定的距离(ž®½å¯èƒ½åˆ†åˆ«è£…在厂房的山墙两侧).实现良好的通风换气效果.排风侧尽量不靠近附近建筑ç‰?以防影响附近住户.如从室内带出的空气中含有污染环境.可以在风口安装喷水装¾|?吔R™„˜q‘污染物集中回收.不污染环境ã€?/span></div> <div> <br /> <span style="font-size:14px;">æ€ÀLŽ¨åŠ›It</span></div> <div> <span style="font-size:14px;">It=△P×At(N)</span></div> <div> <span style="font-size:14px;">其中,At:隧道横截面积(m2)</span></div> <div> <span style="font-size:14px;">â–?P:各项é˜ÕdŠ›ä¹‹å’Œ(Pa);一般应计及下列4™å?</span></div> <div> <span style="font-size:14px;">1) 隧道˜q›é£Žå£é˜»åŠ›ä¸Žå‡ºé£Žå£é˜»åŠ?</span></div> <div> <span style="font-size:14px;">2) 隧道表面摩擦é˜ÕdŠ›,悬吊风机装置、支架及路标½{‰å¼•èµïLš„é˜ÕdŠ›;</span></div> <div> <span style="font-size:14px;">3) 交通阻åŠ?</span></div> <div> <span style="font-size:14px;">4) 隧道˜q›å‡ºå£ä¹‹é—´å› æ¸©åº¦ã€æ°”压、风速不同而生的压力差所产生的阻åŠ?</span><br />  </div> <div> <strong><span style="font-size:14px;">风机布置</span></strong></div> <div>  </div> <div> <span style="font-size:14px;">æ ÒŽ®éš§é“长度、所需æ€ÀLŽ¨åŠ›ä»¥åŠå°„‹¹é£Žæœºæä¾›æŽ¨åŠ›çš„范围,初步¼‹®å®šåœ¨éš§é“总长上共布置m¾l„风æœ?每组nå?每台风机的推力äؓT.</span></div> <div> <span style="font-size:14px;">满èƒöm×n×T≥Tt的æ€ÀLŽ¨åŠ›è¦æ±?同时考虑下列限制条äšg:</span></div> <div> <span style="font-size:14px;">1) n台风机åƈ列时,其中心线横向间距应大äº?倍风机直å¾?/span></div> <div> <span style="font-size:14px;">2) m¾l?å?风机串列æ—?¾Uµå‘间距应大äº?0倍隧道直å¾?/span></div> <div> <span style="font-size:14px;">参数¼‹®å®š:</span></div> <div> <span style="font-size:14px;">ž®„流风机的性能以其施加于气‹¹çš„推力来衡é‡?风机产生的推力在理论上等于风æœø™¿›å‡ºå£æ°”流的动量差(动量½{‰äºŽæ°”流质量‹¹é‡ä¸Žæµé€Ÿçš„乘积),在风机测试条件先,˜q›å£æ°”流的动量äؓé›?所以可以计½Ž—出在测试条件下,风机的理论推åŠ?</span></div> <div> <span style="font-size:14px;">理论推力=p×Q×V=pQ2/A(N)</span></div> <div> <span style="font-size:14px;">P:½Iºæ°”密度(kg/m3)</span></div> <div> <span style="font-size:14px;">Q:风量(m3/s)</span></div> <div> <span style="font-size:14px;">A:风机出口面积(m2)</span></div> <div> <span style="font-size:14px;">试验台架量测推力T1一般äؓ理论推力çš?.85-1.05å€?取决于流场分布与风机内部及消声器的结æž?风机性能参数图表中所¾l™å‡ºçš„风机推力数据均以试验台枉™‡‹¹‹æŽ¨åŠ›äؓå‡?但量‹¹‹æŽ¨åŠ›è¿˜ä¸ç­‰äºŽé£Žæœø™£…在隧道内所能äñ”生的可用推力T,˜q™æ˜¯å› äؓ风机吊装在隧道中时会受到隧道中气‹¹é€Ÿåº¦äº§ç”Ÿçš„卸荷作用的影响(柯达恩效åº?,可用推力减少.影响的程度可用系数K1和K2来表½Cºå’Œè®¡ç®—:</span></div> <div> <span style="font-size:14px;">T=T1×K1×K2或T1=T/(K1×K2)</span></div> <div> <span style="font-size:14px;">其中T:安装在隧道中的射‹¹é£Žæœºå¯ç”¨æŽ¨åŠ?N)</span></div> <div> <span style="font-size:14px;">T1: 试验台架量测推力(N)</span></div> <div> <span style="font-size:14px;">K1:隧道中åã^均气‹¹é€Ÿåº¦ä»¥åŠé£Žæœºå‡ºå£é£Žé€Ÿå¯¹é£ŽæœºæŽ¨åŠ›çš„媄响系æ•?/span></div> <div> <span style="font-size:14px;">K2:风机轴流¼›»éš§é“壁之间距离的媄响系æ•?/span></div></div> </div> <div class="dis_prevnext clearfix"> <p class="left">上一½‹‡ï¼š<a ><a href="/html/fjzs_1606_2636.html" title="¼›Õd¿ƒé£Žæœºçš„工作原ç?>¼›Õd¿ƒé£Žæœºçš„工作原ç?/a></a> </p> <p class="right">下一½‹‡ï¼š<a>没有äº?/a> </p> </div> <p class="dis_block_title">您可能还需要了è§?/p> <div class="list_liaojie 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