8675

8056

كارشناسي ارشد

تبديل انرژي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك

1392

شانزده،96ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

احمدضا پيشه ور، محمود يعقوبي

19/1/93

محمدرضا سليم پور، محمدرضا توكلي

مهندسي مكانيك

ID8056

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

98 o Weight incl battery grams 220g Experimental Study of Natural Frost Formation over a Plate Fins Heat Exchanger Mohamad Amini m amini@me iut ac ir January 22 2014 Department of mechanical engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisors Ahmad Reza Pishevar apishe@cc iut ac ir Mahmood Yaghoubi yaghoubi@shirazu ac irAbstract In refrigeration and air conditioning industries to enhance heat transfer particularly in the evaporators fin and tube heat exchangers are widely used Due to low temperatures in such systems generally frost formationon such heat exchangers takes places Frost formation and growth over any surface will influence the systemoperation and performance and it reduces heat transfer between the heat exchanger surface and ambientenvironment Design of such systems requires the detail understanding of the frost nucleation growth andshape with respect to time on various position of any surface such as plate fin and tube heat exchangers Frostformation is studied extensively but from the review of the literature it is observed that few reports aboutfrost formation on plate fin and tube heat exchanger by natural convection are available In this study attemptis made to investigate experimentally the performance of a plate fin and tube heat exchanger for variantrefrigerant temperature and ambient conditions

احمدضا پيشه ور، محمود يعقوبي

محمدرضا سليم پور، محمدرضا توكلي