An Experimental Study of the Steel Cylinder Quenching in Water-based Nanofluids
محل انتشار: ماهنامه بین المللی مهندسی، دوره: 33، شماره: 1
سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 282
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شناسه ملی سند علمی:
JR_IJE-33-1_004
تاریخ نمایه سازی: 25 خرداد 1399
چکیده مقاله:
In this study, some parameters such as quenching and boiling curves of a stainless steel cylindrical rod 80 mm long and having a diameter of 15 mm were experimentally obtained in saturate pure water and two nanofluids (SiO2 and TiO2) with 0.01 wt%. The cylinder was vertically lowered into the pool of saturated water and its temporal center temperature was measured by a thermocouple. The boiling curves were then obtained by solving a transient one-dimensional inverse heat conduction model and measuring the temperature at the center of the cylinder. The images of the surface morphology and uniformity of the deposited SiO2 and TiO2 nano particles were captured by the scanning electron microscope (SEM). The cooling time during quenching of the cylinder was decreased about 50% by nanoparticles deposition. However, the SiO2 and TiO2 nano particle deposition have similar critical heat flux increment (up to 120%). Film boiling heat transfer rate increased by repetitive quenching in SiO2 nanofluid.
کلیدواژه ها:
نویسندگان
Aref Rahimian
Nuclear Science and Technology Research Institute, Tehran, Iran
Hosein Kazeminejad
Nuclear Science and Technology Research Institute, Tehran, Iran
Hosein Khalafi
Nuclear Science and Technology Research Institute, Tehran, Iran
Seyed Mohammad Mirvakili
Nuclear Science and Technology Research Institute, Tehran, Iran