Nucleate pool boiling heat transfer of TiO2–R141b nanofluids

Abstract Nucleate pool boiling heat transfer of a refrigerant-based-nanofluid was investigated at different nanoparticle concentrations and pressures. TiO 2 nanoparticles were mixed with the refrigerant HCFC 141b at 0.01, 0.03 and 0.05 vol%. The experiment was performed using a cylindrical copper tube as a boiling surface. Pool boiling experiments of nanofluid were conducted and compared with that of the base refrigerant. The results indicate that the nucleate pool boiling heat transfer deteriorated with increasing particle concentrations, especially at high heat fluxes. At 0.05 vol%, the boiling heat transfer curves were suppressed. At high pressures of 400 and 500 kPa, the boiling heat transfer coefficient at a specific excess temperature was almost the same.

[1]  William W. Yu,et al.  ANOMALOUSLY INCREASED EFFECTIVE THERMAL CONDUCTIVITIES OF ETHYLENE GLYCOL-BASED NANOFLUIDS CONTAINING COPPER NANOPARTICLES , 2001 .

[2]  Y. Xuan,et al.  Heat transfer enhancement of nanofluids , 2000 .

[3]  J. H. Kim,et al.  Effect of nanoparticles on critical heat flux of water in pool boiling heat transfer , 2003 .

[4]  Y. Xuan,et al.  Investigation on Convective Heat Transfer and Flow Features of Nanofluids , 2003 .

[5]  W. Roetzel,et al.  Pool boiling characteristics of nano-fluids , 2003 .

[6]  Nandy Putra,et al.  Pool boiling of nano-fluids on horizontal narrow tubes , 2003 .

[7]  Zhou Danna,et al.  Heat transfer enhancement of copper nanofluid with acoustic cavitation , 2004 .

[8]  D. Jung,et al.  Enhancement of nucleate boiling heat transfer using carbon nanotubes , 2007 .

[9]  S. J. Kline,et al.  Describing Uncertainties in Single-Sample Experiments , 1953 .

[10]  Yulong Ding,et al.  Experimental investigation into the pool boiling heat transfer of aqueous based γ-alumina nanofluids , 2005 .

[11]  K. Leong,et al.  Enhanced thermal conductivity of TiO2—water based nanofluids , 2005 .

[12]  Soon-Heung Chang,et al.  Boiling heat transfer performance and phenomena of Al2O 3-water nano-fluids from a plain surface in a pool , 2004 .

[13]  Stephen U. S. Choi.  Enhancing thermal conductivity of fluids with nano-particles , 1995 .

[14]  M. Cooper.  SATURATION NUCLEATE POOL BOILING - A SIMPLE CORRELATION , 1984 .

[15]  Dongsoo Jung,et al.  Boiling heat transfer enhancement with carbon nanotubes for refrigerants used in building air-conditioning , 2007 .

[16]  W. Rohsenow.  A Method of Correlating Heat-Transfer Data for Surface Boiling of Liquids , 1952, Journal of Fluids Engineering.