بررسی تجربی پایداری نانوسیال اکسید مس بر پایه آب یون زدایی شده و دستیابی به شرایط بهینه پایداری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، دانشکده مهندسی شیمی، دانشگاه سمنان

2 استادیار، پژوهشکده انرژی، پژوهشگاه مواد و انرژی، کرج

3 دانشیار، دانشکده مهندسی شیمی، دانشگاه سمنان

چکیده

در این تحقیق، پایداری نانوسیال اکسید مس با غلظت وزنی 1/0 درصد بر پایه آب یون زدایی شده به طور تجربی مورد بررسی قرار گرفته است. آزمایش ها با هدف بررسی تأثیر عوامل سرعت دورانی و مدت زمان پخش نانوذرات در سیال پایه، زمان موج دهی فراصوت، نوع و غلظت مواد فعال سطحی و مقدار اسیدیته بر پایداری نانوسیال و دستیابی به یک شرایط بهینه پایداری طراحی شده اند. نتایج از لحاظ آماری و با استفاده از روش تاگوچی در نرم افزار Qualitek-4تحلیل شده اند. علاوه بر آن، میزان پایداری نانوسیالات به کمک بررسی تصاویر ته- نشینی و همچنین روش پتانسیل زتا مورد ارزیابی قرار گرفته است. نتایج نشان داده اند که استفاده از ماده فعال سطحی سدیم دودسیل- سولفات با غلظت وزنی 1/0 درصد، یک ساعت موج دهی فراصوت با استفاده از دستگاه موج دهی فراصوت میله ای و تنظیم مقدار اسیدیته برابر 72/10، بهترین شرایط را برای پخش نانوذرات اکسید مس در آب یون زدایی شده فراهم آورده اند. در این شرایط، نانوسیال ساخته شده برای مدت زمان حداقل 40 روز بدون مشاهده هیچ اثری از ته نشینی نانوذرات، پایداری خود را حفظ نموده است.

کلیدواژه‌ها


عنوان مقاله [English]

Experimental Study of the Stability of Deionized Water Based Copper Oxide Nanofluid and Achievement to the Optimal Stability Conditions

نویسندگان [English]

  • Mahdi KamalGharibi 1
  • Seyed AmirHossein Zamzamian 2
  • Faramarz Hormozi 3
چکیده [English]

In this study, the stability of deionized water based copper oxide nanofluid with weight concentration of 0.1 percent is investigated experimentally. The experiments are designed to investigate the influence of rotational speed and dispersion time of nanoparticles in the base fluid, ultrasonic waving time, type and concentration of surfactants and pH on the nanofluid stability and achieve to an optimal stability condition. The results are statistically analysed using Taguchi method by implementing Qualitek-4 software. Furthermore, nanofluid stability is evaluated by investigation of sedimentation photographs also, zeta potential method. The results showed that using sodium dodecyl sulphate with weight concentration of 0.1 percent, ultrasonic waving by ultrasonic probe device for an hour and changing the pH to 10.72, provide the best conditions for dispersing copper oxide nanoparticles in deionized water. In this condition, prepared nanofluid is maintained it̕s stability with no trace of sedimentation of nanoparticles for forty days at least.

کلیدواژه‌ها [English]

  • Nanofluid
  • stability
  • Rotational Speed
  • Surfactant
  • Ultrasonic Waving
  • Acidity
  • Taguchi method
  • Zeta Potential
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