پديد آورنده :
رضايي بخش، محمدرضا
عنوان :
طراحي و ساخت يك نمونه مشعل محيط متخلخل با نسبت كاهش زياد
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
مهندسي مكانيك
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك
صفحه شمار :
پانزده، 153ص.: مصور، جدول، نمودار
يادداشت :
ص.ع. به فارسي و انگليسي
استاد راهنما :
محسن دوازده امامي
استاد مشاور :
اكبر عالم رجبي
توصيفگر ها :
نسبت هم ارزي , نرخ آتش , آلودگي , برگشت شعله
تاريخ نمايه سازي :
17/3/91
استاد داور :
احمد صابونچي، احمد صداقت
تاريخ ورود اطلاعات :
1396/10/06
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Design and Construction of a Porous Medium Burner With a High Reduction Ratio Mohamad Reza Rezaeibakhsh m rezaeibakhsh@me iut ac ir Date of Submission 19 12 2011 Department of Mechanical Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi mohsen@cc iut ac ir Supervisor Mohsen davazdah Emami AbstractPorous burners are one of the technologies that are used to reduce fuel consumption andpollution formation in combustion applications Less generation of NOx preheating of thefuel air mixture and higher delivery thermal power are among the favorable features of thesekinds of burners Moreover all of the mechanisms of heat transfer are active in these types ofburners while other types of burners may not be able to take advantage of all heat transfermechanisms Other distinguished features of porous burners are the wide range of fuel air ratiooperating range extended dynamic power range compactness uniformity of temperaturedistribution inside the combustion chamber and higher warm up efficiency These distinctadvantages of porous burners have made them a prime choice in applications such asresidential heating systems steam generation dryers and propulsion systems The present work aims to assess different parameters on the combustion performance inporous media A 5 kW porous burner has been designed and built to be used in theexperiments Natural gas is used as the fuel Air and fuel flow rates are measured by means ofrotameters Thermocouples are installed along the burner to measure temperature profile Adata logger capable of recording 16 temperature measurements simultaneously is used tocollect data About 50 data per second is recorded which results in an enormous volume ofdata in the time span of experiment Two types of tests are performed in this study The first type concerns with the monitoring offlame and pollution emission from the porous burner during steady state working conditions In this regard the effect of porosity 10 ppi 20 ppi and 30 ppi is studied in the flamecharacteristics It is found that a combination of 30 ppi medium as preheating zone and a 20ppi medium as the combustion zone provides a plausible arrangement The effect of fuel airratio is studied in a very wide range of this ratio The present configuration enables a reductionof fuel air ratio up to 0 3 for the aforementioned fuel The main pollutants CO and NOx aremeasured in the above range It was found that the amounts of these pollutants are muchbelow the usual range in the free flames Different regimes of flame namely the under surface over surface detached and buried are observed during the tests These regimes areclosely related to the firing rates of the burner
استاد راهنما :
محسن دوازده امامي
استاد مشاور :
اكبر عالم رجبي
استاد داور :
احمد صابونچي، احمد صداقت
