Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Boiling flow of graphene nanoplatelets nano-suspension on a small copper disk

Full text
Goodarzi, Marjan [1] ; Tlili, Iskander [2] ; Moria, Hazim [3] ; Cardoso, E. M. [4] ; Alkanhal, Tawfeeq Abdullah [5] ; Anqi, Ali E. [6] ; Safaei, Mohammad Reza [7, 8, 9]
Total Authors: 7
[1] Ton Duc Thang Univ, Fac Environm & Labour Safety, Sustainable Management Nat Resources & Environm R, Ho Chi Minh City - Vietnam
[2] Majmaah Univ, Dept Mech & Ind Engn, Coll Engn, Al Majmaah 11952 - Saudi Arabia
[3] Yanbu Ind Coll, Dept Mech Engn Technol, Yanbu Al Sinaiyah City 41912 - Saudi Arabia
[4] UNESP Univ Estadual Paulista, Dept Mech Engn, Ave Brazil Ctr 56, BR-15385000 Ilha Solteira, SP - Brazil
[5] Majmaah Univ, Coll Engn, Dept Mechatron & Syst Engn, Al Majmaah 11952 - Saudi Arabia
[6] King Khalid Univ, Dept Mech Engn, Coll Engn, Abha 61421 - Saudi Arabia
[7] Duy Tan Univ, Inst Res & Dev, Da Nang 550000 - Vietnam
[8] Duy Tan Univ, Fac Elect Elect Engn, Da Nang 550000 - Vietnam
[9] King Abdulaziz Univ, Fac Sci, Dept Math, NAAM Res Grp, POB 80259, Jeddah - Saudi Arabia
Total Affiliations: 9
Document type: Journal article
Source: Powder Technology; v. 377, p. 10-19, JAN 2 2021.
Web of Science Citations: 7

In the present work, an attempt was made to experimentally quantify the boiling heat transfer coefficient (BHTC) of graphene oxide-water nano-suspension (NS) inflow boiling heat transfer regime. The NS was prepared at weight fractions of 0.025, 0.05, and 0.1% using the two-step method and further stabilized for 17 days (at wt% = 0.1). Results showed that the presence of graphene oxide nanoplatelets (GNPs) imposed an extreme fouling thermal resistance (FTR) to the surface, which caused a reduction in the BHTC over 1000 min of continuous operation after the CHF point. This was mainly due to the presence of the graphene oxide on the surface, which created a surficial fouling layer and heat accumulation on the surface. Instead, the sedimentation layer promoted the critical heat flux (CHF) point such that the point for water was 1370 kW/m(2) reaching 1640 kW/m(2) for NS at wt% = 0.1. Likewise, the highest BHTC of 17.4 kW/(m(2)K) at Re = 10,950 was obtained. Also, with increasing the heat flux and flow rate, the BHTC increased. The same trend was also identified with a mass fraction of GNPs up to CHF point. The increase in the BHTC was attributed to the intensification of the Brownian motion and thermophoresis effect in the boiling micro-layer close to the surface. (C) 2020 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 13/15431-7 - Application of nanotechnology in thermal processes and energy conversion
Grantee:Elaine Maria Cardoso
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 19/02566-8 - Hydrodynamic and thermal characteristics of single and two-phase flow in micro pin fin heat sinks
Grantee:Elaine Maria Cardoso
Support Opportunities: Regular Research Grants