9157

8469

كارشناسي ارشد

مهندسي شيمي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده مهندسي شيمي

1392

هشت،68ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

محسن نصر اصفهاني

نسرين اعتصامي

8/7/93

ارجمند مهرباني، مسعود حق شناس

مهندسي شيمي

ID8469

Experimental Investigation of Heat Transfer of Si Water Nanofluid in Jacket Side of an Agitated Vessel Parinaz Hafezisefat p hafezisefat@ce iut ac ir Date of Submision 2014 03 16 Department of Chemical Engineering Isfahan University of Technology Isfahan 84156 83111 IranDegree MsC Language FarsiSupervisor Dr M Nasr Esfahany m nasr@cc iut ac irAbstractConventional heat transfer fluids like water ethylene glycol and engine oil have poor heat transferperformance Solid materials have higher thermal conductivities relative to heat transfer fluids so the stablesuspension of solid particles in conventional heat transfer fluids can be a kind of new and innovativecoolants with improved heat transfer performance In the present investigation Si water nanofluids andglycerol water solution in different concentrations were used as cooling liquid in the jacket side of a reactorthat was equipped with a conventional jacket without baffle Heat transfer rates were measured fornanofluid and base liquid The nanofluid concentration was between 0 005 0 8 volume fraction Forvery dilute nanofluids less than 0 1 volume fraction no heat transfer enhancement was observed Forgreater concentrations heat transfer rates augmented to some extent Nusselt number increased withincreasing the nanofluid concentration as well as Reynolds number At 0 8 volume fraction of nanofluidthe heat transfer coefficient increased between 4 5 10 compared to pure water by changing Reynoldsnumber By using the least square method to all the experimental data two correlations for water andnanofluid were obtained Keywords Heat Transfer Enhancement Forced Convection Si Nanofluid Conventional Jacket

محسن نصر اصفهاني

نسرين اعتصامي

ارجمند مهرباني، مسعود حق شناس