C70MX2-2SH空壓機冷卻器強化傳熱研究.pdf

1、華中科技大學碩士學位論文C70MX22SH空壓機冷卻器強化傳熱研究姓名：詹耀雙申請學位級別：碩士專業(yè)：動力工程指導教師：黃素逸20060415華中科技大學碩士學位論文Abs仃actThcheattransfercoe蕊ciellt0ffo】∞edairconvectionisc伽1parativelylowInordertoimprovemeperfb瑚anceofsbella11dtubcheatexchangerwhereairno

2、wsⅡ啪u曲theshellside，、vecanimproveheat廿aIIlsfcrelements鋤dstm曲湘lsupponinshellsideoftheheatexchaIlgerTheexpefime砌heatexchallgersarecOmbinedw妯p咖lsh印edttlbes，plaintubesandlow—fintubcs謝mhelicalb斕ewKchc觚increasetlleheatconvectio

3、ncoefficielltinshellsidealldbr主nglesserpressurelossTheheatexch鋤ger、jl，itllhelicalb棚eandpe：Ial—shaped缸bccanbebroadlyappIicdinthchd璐砸alandcivil矗dds，such髓re掰gemtingindus虹y，powerindustⅨencrg)7indust鞏ch鋤icalilldus廿y鋤dmetallur

4、gicali11dustryetcTheairnowstllmugh怕ehelicalcl瑚melsoutofplaintIIbeslo、Ⅳf_mtIlbesa11dpetal—shapcdtllbcsTheperfbm鞠cesofheat艦nsferaIldflowfesi啦mcearestudicd碼eheattrallsfercoe伍cientsoftllbeside柚dshell—sidehavebeensepamtedThee

5、xperimenterrorhasbeenanalyzedThecorrelationequationsofheattransferhavebeenfoundon吐鹼basisofexp喇m酬dataTheexperime刪resul招showtllatmehe毗恤msf打cOe施cientOfpetal—shapedtIlbes、vitllheli∞alb棚eisabout18~21t蛔esofnlat塒mdailltubesnehe

6、attransfercoe蚯cientofexpefimentalheatexchang盯砸tlllow_矗n缸besisabout1以17timesDfthatofmeexpcrime砌heatexchangerwitllplainnIbesnhasbeendiscllssedhowmeairVelocityillfluences協(xié)eheat呲船pedb肋anceoftheheatexchangersIntheexperimemalr