[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 8, Issue 2 (summer 1400 2021) ::
تبدیل انرژی 2021, 8(2): 65-84 Back to browse issues page
Experimental study of the combined effect of using nanofluid and microchannel techniques on nucleate and film boiling performance
Hadi Golkar1, Morteza Khayat *2, Masoud Zarea1
1- Islamic Azad University Science and research Branch, Department of mechanical engineering, Tehran
2- Islamic Azad University Science and research Branch, Department of mechanical engineering, Tehran , mkhayat@srbiau.ac.ir
Abstract:   (91 Views)
In the present study, the nucleate and film boiling heat transfer of alumina-deionized water and silica-deionized water nanofluids in the presence of microchannel surface has been investigated experimentally. For this purpose, both types of nanofluids with volumetric concentrations of 0.1%, 0.3% and 0.5% were prepared using two-step method. Pure deionized water boiling experiments on polished and microchannel copper surfaces and nanofluid boiling experiments on microchannel copper surface were performed. The results showed that the combination of the presence of nanofluid and microchannel in the boiling process significantly increased the critical heat flux and the minimum heat flux. In the boiling of nanofluids on microchannel surface, the volumetric concentration of 0.5% had the best performance, so that the maximum values of critical heat flux and minimum heat flux for alumina-deionized water nanofluid increased by 93.02% and 105.32%, and for silica-deionized water nanofluid increased by 90.82% and 97.15%, respectively, compared to pure deionized water boiling on the polished surface. In addition, it was observed that with the deposition of nanoparticles on the microchannel surface, the surface wettability increased and the nucleate boiling heat transfer coefficient of nanofluids decreased compared to pure deionized water. But in film boiling, the effects of improving the thermal properties of nanofluids have overcome the destructive effects of nanoparticles deposition on the surface.
Keywords: Nucleate boiling, Film boiling, Heat flux, Microchannel, Nanofluids
Full-Text [PDF 1592 kb]   (44 Downloads)    
Type of Study: Research | Subject: Heat and Mass Transfer
Received: 2021/04/8 | Accepted: 2021/07/23 | Published: 2021/07/27
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA


XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Golkar H, Khayat M, Zarea M. Experimental study of the combined effect of using nanofluid and microchannel techniques on nucleate and film boiling performance. تبدیل انرژی. 2021; 8 (2) :65-84
URL: http://jeed.iaud.ac.ir/article-1-364-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 8, Issue 2 (summer 1400 2021) Back to browse issues page
مجله علمی تخصصی مهندسی مکانیک تبدیل انرژی Journal of Energy Conversion
Persian site map - English site map - Created in 0.04 seconds with 30 queries by YEKTAWEB 4374