Fig. 14.

(a) Surface tension and (b) specific heat of CuO (Continious line) and Al₂O₃ (Dashed line) nanofluids under varying concentrations (Vijaykumar et al. [69]).

Reprinted from Journal of the Taiwan Institute of Chemical Engineers, 81, M. Vijayakumar,P. Navaneethakrishnan,G. Kumaresan,R. Kamatchi, A study on heat transfer characteristics of inclined copper sintered wick heat pipe using surfactant free CuO and Al2O3 nanofluids, Pages No.190-198, Copyright (2017), with permission from Elsevier