Abstract
Spray impingement plays a vital role in the cooling process. Spray impingement acts as a cooling media for high heat flux applications. As nanofluids have enhanced thermal properties than base fluids, CuO, ZnO, and hybridized CuO and ZnO nanofluids at different volume concentrations were used in this experiment. The nanoparticles were synthesized using high-energy ball milling (HEBM) technique at 300 rpm with the ball-to-powder ratio (BPR) of 10:1. These nanoparticles were characterized by using XRD, SEM, and TEM and were found to be in the range of 30 nm. The densities, viscosity, thermal conductivity, and the specific heat of the nanofluids were calculated using different models. It was observed that increase in the volume concentration, density, and viscosity of the nanofluid increased. The heat transfer study was carried out on an electrically preheated iron plate of dimensions 100 mm × 100 mm × 8 mm at different temperatures of 200, 150, and 100 °C. The cooling rate and the effect of air pressure on cone angle were analyzed. The main sources of uncertainty in the measured data were due to the temperature fluctuations and thermocouple locations. It was observed that the time taken to reach the steady state was faster in nanofluids than normal water.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Abbreviations
- CR:
-
Cooling rate, (°C/s)
- \( C_{p } \) :
-
Specific heat (J/kgK)
- h :
-
Heat transfer coefficient, (W/m2 K)
- k :
-
Thermal conductivity (W/mK)
- NF1:
-
CuO—water nanofluid
- NF2:
-
ZnO—water nanofluid
- NF3:
-
CuO-doped ZnO—water nanofluid
- T 1 :
-
Impingement starting temperature of the plate, (°C)
- T 2 :
-
Impingement ending temperature of the plate, (°C)
- t :
-
Time taken to cool the heated plate, (s)
- T s :
-
Surface average temperature, (°C)
- T fl :
-
Water jet temperature, (°C)
- \( \varphi \) :
-
Volume concentration
- \( \rho \) :
-
Density (kg/m3)
- \( \mu \) :
-
Dynamic viscosity (kg/ms)
- \( \varepsilon \) :
-
Effectiveness
- τ:
-
Thickness of plate, (mm)
- nf :
-
Nanofluid
- w :
-
Water
- p :
-
Nanoparticle
- 1:
-
CuO nanopowder
- 2:
-
ZnO nanopowder
- 3:
-
ZnO-doped CuO nanopowder
References
Ravikumar SV, Haldar K, Jha JM et al (2015) Heat transfer enhancement using air-atomized spray cooling with water—Al2O3 nanofluid. Int J Therm Sci 96:85–93
Liang G, Mudawar I (2017) Review of spray cooling—part 1: single-phase and nucleate boiling regimes and critical heat flux. Int J Heat Mass Transf 115:1174–1205
Xu F, Gadala MS (2006) Heat transfer behavior in the impingement zone under circular water jet. Int J Heat Mass Transf 49:3785–3799
Taylor P, Das SK, Choi SUS, Patel HE (2007) Heat transfer in nanofluids—a review. Heat Transf Nanofluids 37–41
Nayak SK, Mishra PC, Parashar SKS (2016) Enhancement of heat transfer by water–Al2O3 and water–TiO2 nanofluids jet impingement in cooling hot steel surface. J Exp Nanosci 11:1253–1273
Shojaeian M, Koşar A (2015) Pool boiling and flow boiling on micro- and nanostructured surfaces. Exp Therm Fluid Sci 63:45–73
Teamah MA, Khairat MM, Shehata A (2016) Numerical and experimental investigation of flow structure and behavior of nanofluids flow impingement on horizontal flat plate. Exp Therm Fluid Sci 74:235–246
Haddad Z, Abid C, Oztop HF, Mataoui A (2014) A review on how the researchers prepare their nanofluids. Int J Therm Sci 76:168–189
Tawfik MM (2017) Experimental studies of nanofluid thermal conductivity enhancement and applications: a review. Renew Sustain Energy Rev 75:1239–1253
Philip J, Shima PD (2012) Thermal properties of nanofluids. Adv Colloid Interf Sci 185:30–45
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Pattanayak, B., Mund, A., Jayakumar, J.S., Parashar, K., Parashar, S.K.S. (2019). Spray Impingement Heat Transfer Using Nanofluid—Experimental Study. In: Saha, P., Subbarao, P., Sikarwar, B. (eds) Advances in Fluid and Thermal Engineering. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-6416-7_35
Download citation
DOI: https://doi.org/10.1007/978-981-13-6416-7_35
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-6415-0
Online ISBN: 978-981-13-6416-7
eBook Packages: EngineeringEngineering (R0)