本文選題：軸流換熱風扇 + 風管性能試驗　； 參考：《上海交通大學》2014年碩士論文

【摘要】：與大型商場、車間和家用空調(diào)相比，由于換熱量不同，小型辦公場所配置的室外機軸流換熱風扇需要專門設(shè)計。這一類的換熱風扇風量要求在5300~6600m3/h，通常擺放在距工作生活區(qū)略遠的室外位置，流量和全壓是其換熱性能的重要評判標準。 針對某企業(yè)對軸流風扇性能的要求，論文對三個產(chǎn)品分別進行了細致的性能研究。首先在室外機產(chǎn)品上采用三孔探針測試了風扇出口流動，進而改裝了風管性能試驗臺，測試了不同轉(zhuǎn)速下風扇性能，得到了無量綱風扇性能數(shù)據(jù)，同時測試了風管內(nèi)風扇前后速度分布，與原產(chǎn)品測試數(shù)據(jù)進行了對比。為了進一步研究風扇葉片流道內(nèi)的流動機構(gòu)，本文采用UG建模軟件中建立了風扇實體模型以供數(shù)值模擬計算，同時對流場不同進出口長度進行了分析，，得到了恰當?shù)娘L扇流場模型，進行風扇內(nèi)部流場分析。數(shù)值計算與實驗測試數(shù)據(jù)對比分析，首先說明了數(shù)值計算結(jié)果的可靠性，發(fā)現(xiàn)風扇葉頂分離渦對風扇性能和計算結(jié)果有很大的影響，說明葉頂間隙對葉頂分離渦尺度有直接影響，進而影響風扇整體性能。 為了增強通風換熱效果，本文研究了葉片安裝角度增大5o后性能，數(shù)值計算和實驗測試均表明新風扇的性能達到了性能改進的目標。
[Abstract]:Compared with large shopping malls, workshops and domestic air conditioners, small office space equipped with outdoor axial flow heat exchange fans need to be specially designed because of the different heat transfer. This kind of heat exchange fan requires air volume at 5300,6600m3 / h and is usually placed outside the living area slightly away from the living area. Flow rate and total pressure are the important criteria for evaluating the heat transfer performance of the fan. According to the requirements of an enterprise for the performance of axial fan, three products are studied in detail in this paper. First of all, the flow of fan outlet was tested with a three-hole probe on the outdoor unit, and then the air duct performance test rig was modified. The fan performance data were obtained under different rotating speeds. At the same time, the velocity distribution of the fan in the air duct was measured and compared with the test data of the original product. In order to further study the flow mechanism in the flow channel of fan blade, the solid model of fan is established by UG software for numerical simulation. At the same time, the flow field with different inlet and outlet length is analyzed. An appropriate fan flow field model is obtained and the flow field inside the fan is analyzed. Compared with the experimental data, the reliability of the numerical results is demonstrated. It is found that the separation vortex at the top of the fan blade has a great influence on the fan performance and the calculated results. The results show that the tip clearance has a direct effect on the blade tip separation vortex scale, and then affects the overall performance of the fan. In order to enhance the heat transfer effect of ventilation, the performance of the new fan is studied after the blade mounting angle is increased by 5 o. The results of numerical calculation and experimental test show that the performance of the new fan has reached the goal of performance improvement.
【學位授予單位】：上海交通大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TB657.2

【參考文獻】

相關(guān)期刊論文 前10條

1 劉鋒;賈多杰;李曉禮;席國柱;吉永林;;無量綱化的方法[J];安順學院學報;2008年03期

2 李偉國;王建華;;軸流通風機的優(yōu)化設(shè)計[J];北京機械工業(yè)學院學報;2005年04期

3 李發(fā)海;;風扇性能測試系統(tǒng)的設(shè)計[J];福建電腦;2009年12期

4 王軍,金培耕,伍光輝,吳克啟;空調(diào)用軸流風扇系統(tǒng)內(nèi)流特性分析與應(yīng)用[J];工程熱物理學報;2002年03期

5 謝軍龍,汪學軍,伍光輝,董亞龍,吳克啟;開式軸流風扇葉尖流動的PIV實驗研究[J];工程熱物理學報;2004年04期

6 王嘉冰;吳克啟;;空調(diào)器新型軸流風扇葉尖渦的研究[J];工程熱物理學報;2006年S1期

7 牛茂升;臧述升;黃名海;;間隙高度對渦輪葉頂間隙流動的影響[J];工程熱物理學報;2008年06期

8 王軍;王興雙;邱鑫;姚瑞鋒;;基于多部件耦合的空調(diào)器軸流風扇葉尖渦研究[J];工程熱物理學報;2011年06期

9 劉洋;楊志剛;;葉頂間隙對軸流風機內(nèi)部流場影響的研究[J];風機技術(shù);2013年02期

10 梁開洪,張克危,許麗;軸流泵葉頂間隙流動的計算流體動力分析[J];華中科技大學學報(自然科學版);2004年09期

相關(guān)博士學位論文 前1條

1 李楊;低壓軸流風扇周向彎曲動葉內(nèi)部流動特征的實驗和數(shù)值研究[D];上海交通大學;2007年

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