Combined free and forced convection heat transfer of the copper oxide-heat transfer oil (CuO-HTO) nanofluid inside horizontal tubes under constant wall temperature

Hekmatipour, Farhad; Akhavan-Behabadi, M.A.; Sajadi, Behrang

doi:10.1016/j.applthermaleng.2016.02.081

Cited by 25 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, while the ratio of thermal conductivity was about 1.35, the ratio of HTC increments was about 1.80. Hekmatipour et al [128] showed that for laminar mixed flow in the developing region, the maximum increment of the Nu number was about 18%. In addition, a correlation equation for mixed convection was proposed-see Table 2.…”

Section: Characteristics Of the Conducted Researchmentioning

confidence: 99%

Experimental Investigations of Forced Convection of Nanofluids in Smooth, Horizontal, Round Tubes: A Review

Cieśliński

Kozak

2023

Energies

View full text Add to dashboard Cite

A comprehensive review of published works dealing with experimental studies of forced convection heat transfer of nanofluids is presented. The survey is limited to straight, smooth, and round tubes. Moreover, only mono nanofluids exhibiting Newtonian behaviour are considered. Works on experimental research of forced convection in tubes are presented in a chronological order in the first part of the article. In this part, attention was paid to the influence of nanoparticles on the intensification of heat transfer. Information on the tested nanofluids, the measurement technique used, and the measurement range are presented in tabular form. Correlation equations proposed by individual researchers are also presented. In order to explain the controversy regarding the different influences of nanoparticles on the intensity of heat transfer during forced convection of nanofluids, the second part of the paper presents a comparison of the test results obtained by different researchers for the same nanofluid, possibly under the same thermal and flow conditions. Finally, the main conclusions are discussed.

show abstract

Section: Characteristics Of the Conducted Researchmentioning

confidence: 99%

Experimental Investigations of Forced Convection of Nanofluids in Smooth, Horizontal, Round Tubes: A Review

Cieśliński

Kozak

2023

Energies

View full text Add to dashboard Cite

show abstract

“…Hekmatipour et al [84] conducted a study on convective heat transfer performance in a horizontal tube with CuO nanoparticles dispersed in heat transfer oil. The nanofluids were prepared for weight concentrations of 0.5 to 1.5%.…”

Section: Copper (Ii) Oxide Nanofluidsmentioning

confidence: 99%

A review on thermo-physical properties and heat transfer applications of single and hybrid metal oxide nanofluids

Azmi¹,

Zainon²,

Hamid³

et al. 2019

JMES

View full text Add to dashboard Cite

Nanofluids have been widely explored by various investigators for different types of nanomaterials either the single nanoparticles or hybrid types. This is due to their advantages in thermal properties as well as contribution to the enhancement in the heat transfer performance. Numerous numbers of studies were performed mostly on oxide nanofluids until today. However, the review on oxide nanofluids and their applications is limited. Hence, this paper highlights the most recent development solely on the oxide nanofluids for heat transfer applications. In addition, a comprehensive review is carried out on the recent studies of thermo‑physical properties on oxide nanofluids and their heat transfer applications. The numerical and experimental studies related to forced convection heat transfer using oxide nanofluids were presented. Most of the literatures confirmed the capability of nanofluids to improve the heat transfer performance and simultaneously insignificant increments in pressure drop. Hence, the oxide nanofluids is recommended for applications in various engineering systems.

show abstract

“…These fluids possess a higher heat transfer rate than the base fluids. On the basis of the previous paper results [1][2][3][4][5][6][7][8], the thermal conductivity and heat transfer coefficient of nanofluids have been found to be the functions of volume concentration, temperature, particle size and shape and sonication time. These positive results have motivated researchers to use the nanofluids in many heat transfer applications.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the effects of sonication time and volume concentration on the performance of PVT solar collector

Rajendiran

Kuppusamy

Senthilraja

2018

IET Renewable Power Generation

View full text Add to dashboard Cite

In this research, the effects of sonication time and volume concentration of cupric oxide (CuO)/water nanofluids on the thermal conductivity, viscosity and performance of photovoltaic-thermal (PVT) solar collector are investigated experimentally. Pure water, 0.05, 0.1 and 0.2% volume concentrations of CuO/water nanofluids prepared with 1, 2, 3 and 4 h sonication time are used as the heat transfer fluids in this study. The experimental results show that the thermal conductivity and viscosity of nanofluids are the functions of sonication time and volume concentration and using a 0.2 vol.% nanofluid prepared with 4 h sonication time, the thermal conductivity and viscosity were enhanced up to 3.5 and 7.5%, respectively, with respect to the base fluid, whereas for the same volume concentration and sonication time, the observed thermal and electrical efficiencies of the PVT solar collector are 80.7 and 15.1%, respectively, at 12 noon. It was observed that the highest total efficiency of the PVT solar collector of about 95.8% was obtained for 0.2% CuO/water nanofluid and 4 h sonication time at 12 noon.

show abstract

Combined free and forced convection heat transfer of the copper oxide-heat transfer oil (CuO-HTO) nanofluid inside horizontal tubes under constant wall temperature

Cited by 25 publications

References 20 publications

Experimental Investigations of Forced Convection of Nanofluids in Smooth, Horizontal, Round Tubes: A Review

Experimental Investigations of Forced Convection of Nanofluids in Smooth, Horizontal, Round Tubes: A Review

A review on thermo-physical properties and heat transfer applications of single and hybrid metal oxide nanofluids

Experimental investigation of the effects of sonication time and volume concentration on the performance of PVT solar collector

Contact Info

Product

Resources

About