Investigation On Heat Transfer Properties Of Water Based TiO2-ZnO Nanofluids

Lahari, M. L. R. Chaitanya; Sai, P. H. V. Sesha Talpa; Swamy, K. S. Narayana; Krishnamurthy, Nagarajan Parasumanna; Sharma, K.V.

doi:10.1088/1757-899x/455/1/012092

Cited by 14 publications

(2 citation statements)

References 21 publications

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“…In a car radiator, heat is carried through conduction from the hot water circulating inside the radiator tubes to the air passing through the closely positioned thin plates that are connected to the tubes. The process of heat transfer in a heat exchanger typically includes the movement of heat through convection in each fluid and conduction through the wall that separates the two fluids 2 .…”

Section: Heat Exchangermentioning

confidence: 99%

Performance Analysis of Double Pipe Heat Exchanger Using Nano Fluids

Ajey,

Shivalingaiah,

Chalageri

et al. 2024

jmmf

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Choosing an appropriate heat transfer fluid is a crucial factor in the design of a heat exchange system. A nanofluid is a colloidal mixture composed of a base fluid and nanoparticles. It is a promising heat transfer fluid in various applications due to its improved thermal conductivity and heat transfer rate. The increasing demand and acceptance for nano-fluids as heat transfer fluids in various applications have led to an increase in research investigations on this topic. Nanofluid technology has recently expanded to include the impregnation of multiple nanoparticles in base fluids, known as hybrid or nanocomposites. For this study, we have chosen three distinct nanoparticles and two base fluids to examine their thermo-physical characteristics and heat transmission rate. Nanofluid is prepared via the sonication method. The experiment is used to determine the thermosphysical characteristics of various nano-fluids. The double-pipe heat exchanger is employed to measure the heat transfer rate and efficiency of nano-fluids. Among six samples prepared in the present work, the ZnO2+CNT+TiO2+EG sample had shown reduced kinematic and dynamic viscosities for all the temperature ranges. However, an average value of heat transfer rate was recorded for ZnO2+CNT+TiO2+EG at 675.87 (J/s) for parallel flow and 630.79 (J/s) for counter flow. And the least effectiveness was recorded for distilled water. The hybrid nanofluid demonstrates a superior heat transfer rate and effectiveness in both parallel flow and counter flow applications. Therefore, it may be efficiently utilised in many heat transfer applications.

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Section: Heat Exchangermentioning

confidence: 99%

Performance Analysis of Double Pipe Heat Exchanger Using Nano Fluids

Ajey,

Shivalingaiah,

Chalageri

et al. 2024

jmmf

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“…It is very important to demonstrate thermal performance of systems under effect of single and two phases flow [8][9][10][11][12][13][14][15][16][17] . Improvement of the thermo-physical properties is realized to be the main way of improving efficiency of the heat exchangers operated by passive technique [18][19][20][21][22][23][24][25][26][27][28] . Mahrooghi and Moghiman 7 demonstrated nanofluid application in cooling systems, in addition to the applications of the nano-fluids in thermal engineering systems.…”

mentioning

confidence: 99%

An experimental investigation of the convective heat transfer augmentation in U-bend double pipe heat exchanger using water-MgO-Cmc fluid

Gabir,

Albayati,

Hatami

et al. 2024

Sci Rep

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One of the major problems of using nanofluids in heat exchange applications is the forming and deposition of nanoparticles on the inner surface of the heat exchanger. In this paper, Water-Cmc fluid is used as a surfactant for nanoparticles to prevent deposition and congregation. The pressure drops and heat transfer in U-bend double pipe heat exchanger based on water-MgO-Cmc fluid, are examined. Nanoparticles of Magnesium Oxide (MgO) and Carboxymethyl Cellulose (Cmc) are used with pure water as a base fluid. The experimental rig and procedures are designed to facilitate various operational conditions such as flow rate, volume concentration of MgO particles and weight concentration of Cmc particles. Furthermore, convective heat transfer coefficient, heat exchanger effectiveness, pressure drop, friction factor, under different conditions, are measured. The results demonstrate convective heat transfer coefficient of U-bend double pipe heat exchangers is enhanced by 35% for 1 MgO vol.% and 0.2 Cmc wt.% compared to base fluid (Water-Cmc). It is concluded that pressure drops are directly proportion to the increase of MgO nanoparticles at same Cmc concentration by 23% at 0.2 wt.%. Whilst, friction factor of the system is inversely proportion to the increase of volumetric flow rate of water-MgO-Cmc fluid. An increase in MgO nanoparticle concentration increases the friction factor, hence maximum friction factor enhancement by 38% for MgO concentration of 1 vol.%. The effectiveness of heat exchanger is slightly increased by 8% with increase of MgO concentration and flow rate. Finally, thermo-physical characteristics of water-MgO-Cmc fluid at various temperatures, are measured

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Counterflow HE analysis of Cu and SiO₂ nanofluids in the developing flow region

Sai¹,

Lahari²,

Sharma

et al. 2022

Heat Trans

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Three concentrations of 0.2, 0.6, and 1.0 vol.% Copper/25 nm and silica/22 nm nanofluids are prepared in a base liquid glycerol–water mixture of 30:70 ratio by volume (GW70). The thermophysical properties of Cu and SiO2 nanofluids are determined with a TPS500S hot disc thermal analyzer and Brookfield viscometer in the temperature range of 20–80°C. The maximum enhancement in Cu and SiO2 nanofluid viscosity (63.4%, 35.7%), thermal conductivity (100.4%, 71.3%), and density (7.5%, 1.5%) while specific heat (7.8%, 2.3%) determined for 1.0% concentration at 80°C compared to base liquid GW70. Heat transfer experiments are conducted in a short‐length double pipe heat exchanger. The flow rates resulted in the lamifnar entry length region. A maximum enhancement in the overall heat transfer coefficient (HTC; 25.0%, 19.7%) and convective HTC (46.2%, 34.8%), respectively for Cu and SiO2 nanofluids is estimated at 1.0% concentration compared to base liquid at a bulk temperature of 35°C.

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Investigation On Heat Transfer Properties Of Water Based TiO2-ZnO Nanofluids

Cited by 14 publications

References 21 publications

Performance Analysis of Double Pipe Heat Exchanger Using Nano Fluids

Performance Analysis of Double Pipe Heat Exchanger Using Nano Fluids

An experimental investigation of the convective heat transfer augmentation in U-bend double pipe heat exchanger using water-MgO-Cmc fluid

Counterflow HE analysis of Cu and SiO₂ nanofluids in the developing flow region

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Investigation On Heat Transfer Properties Of Water Based TiO2-ZnO Nanofluids

Cited by 14 publications

References 21 publications

Performance Analysis of Double Pipe Heat Exchanger Using Nano Fluids

Performance Analysis of Double Pipe Heat Exchanger Using Nano Fluids

An experimental investigation of the convective heat transfer augmentation in U-bend double pipe heat exchanger using water-MgO-Cmc fluid

Counterflow HE analysis of Cu and SiO2 nanofluids in the developing flow region

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Product

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Counterflow HE analysis of Cu and SiO₂ nanofluids in the developing flow region