Experimental Investigation of Aluminum Oxide Nanofluid on Closed Loop Pulsating Heat Pipe Performance

Document Type : Regular Article

Authors

1 JNTU College of Engineering, Kakinada, Department of Mechanical Engineering, Andhra Pradesh, 533003, India

2 Lakireddy Balireddy College of Engineering, Department of Mechanical Engineering, Mylavaram, Andhra Pradesh,521320, India

10.47176/jafm.15.06.1324

Abstract

This paper discusses the experimental studies performed on a single closed loop pulsating heat pipe (CLPHP) to evaluate its thermal performance. The pulsating heat pipe is brass which has a single closed loop. Aluminium oxide (Al2O3) and deionized (DI) water nanofluid were utilized as working fluids, with different volume concentrations of aluminium oxide nanoparticles of 0.05 %, 0.5 % and 1%. The aluminium oxide particles are mixed with water in the two-step method to produce a stable suspension. Experiments are carried out in the horizontal mode with watt loads of heat inputs ranging from 10 w to 100 w. The temperature differences between the evaporator and condenser portions, thermal resistance, heat transfer coefficient and thermal conductivity are the parameters used to determine thermal performance. The thermal resistance of aluminium oxide and DI water nanofluid was the lowest, having 48 % less than that of water. The effective thermal conductivity of the heat pipe improves as the concentration of nanoparticles increases. The comparison between experimental results and computational fluid dynamics (CFD) simulation results CLPHP was carried out under the same condition.

Keywords


Akachi, H. (1990) .Structure of a micro-heat pipe, US Patent, Patent Number 4921041.##
Bai, W., W. Chen, C. Zeng, G. Wu, and X. Chai (2022). Heat transfer and eccentric effect investigation on heat pipe used annular heat exchangers with densely longitudinal fins. International Journal of Thermal Sciences 179, 107658.##
Dittus, F. W. and L. M. K. Boelter (1930). Heat Transfer in Automobile Radiators of the Tubular Type. University of California Publications on Engineering 11, 443 – 461.##
Grubisic, L., D. Lacmanovic, M. Palaversa, P. Prebeg and J. Tambaca (2022). An Open-Source Processing Pipeline for Quad-Dominant Mesh Generation for Class-Compliant Ship Structural Analysis. Journal of Marine Science and Engineering 10(2).209.##
Ji, Y., C. Wilson, H. H. Chen and H. Ma (2011).. Particle Shape Effect on Heat Transfer Performance in an Oscillating Heat Pipe. Journal of Nanoscale Research Letters 6 (1), 296.##
Karthikeyan, V. K., K. Ramachandran, B. C. Pillai and A. Brusly Solomon (2014). Effect of nanofluids on thermal performance of closed loop pulsating heat pipe. Experimental Thermal and Fluid Science 54, 171–178.##
Khandekar, S. (2004). Thermo Hydrodynamics of Pulsating Heat Pipes. PhD Dissertation, University of Stuttgart, Germany.##
Khandekar, S., N. Dollinger and M. Groll (2003). Understanding operational regimes of closed loop PHPs: An experimental study. Applied Thermal Engineering 23 (6), 707-719.##
Markal, B. and K. Aksoy (2021). The combined effects of filling ratio and inclination angle on thermal performance of a closed loop pulsating heat pipe. Heat Mass Transfer 57, 751–763.##
Mohammadi, N., M. Mohammadi, and M. B. Shafii (2013). A review of nanofluidic pulsating heat pipes: Suitable choices for thermal management of electronics. Frontiers in Heat Pipes (FHP) 3(3), 033001.##
Parthasarathi, S., S. Nagarajan and S. Desai (2021). Effect of bend radius and insulation on adiabatic section on the performance of a single closed loop pulsating heat pipe: experimental study and heat transfer correlation. Heat Mass Transfer 57, 1871–1892.##
Pradeep, G. V. and K. Rama Narasimha (2019). Experimental investigations on the thermal performance of a single closed loop pulsating heat pipe using TiO2 Nanofluid. Journal of Heat Transfer 141(9).##
Rahman, M. M. and Z. Saghir (2021). Free convective heat transfer efficiency in Al2O3–Cu/water hybrid nanofluid inside a rectotrapezoidal enclosure. International Journal of Numerical Methods for Heat & Fluid Flow. 32(1), 196-218.##
Rama Narasimha, K., S. N. Sridhara, M. S. Rajagopal and K. N. Seetharamu (2012). Experimental studies on Pulsating Heat Pipe. International Journal of Mechanical Engineering 1(1), 46-49.##
Rao, C. S., A. Gupta and K. R. Narasimha (2016). Parametric Characterization on the Thermal Performance of a Closed Loop Pulsating Heat Pipe. Journal of Applied Fluid Mechanics 9(2), 615-624.##
Sandhya, M., D. Ramasamy, K. Sudhakar, K. Kadirgama and W. S. Harun (2021). Ultrasonication an intensifying tool for preparation of stable nanofluids and study the time influence on distinct properties of graphene nanofluids–A systematic overview. Ultrasonics sonochemistry 73, 105479.##
Singh, K., D. P. Barai, S. S. Chawhan, B. A. Bhanvase and V. K. Saharan (2021). Synthesis, characterization and heat transfer study of reduced graphene oxide-Al2O3 nanocomposite based nanofluids: Investigation on thermal conductivity and rheology. Materials Today Communications 26:101986.##
Stalin, P. M., T. V. Arjunan, M. M. Matheswaran, P. M. Kumar and N. Sadanandam (2021). Investigations on thermal properties of CeO2/water nanofluids for heat transfer applications. Materials Today: Proceedings 47, (19), 6815-6820.##
Wang, J., Y. Pan and X. Liu (2021). Investigation on start-up and thermal performance of the single-loop pulsating heat pipe with variable diameter. International Journal of Heat and Mass Transfer 180,121811.##
Yao, H. L., Guo, H. Liu, X. Wang, H. Chen, Y. Wang and Y. Zhu (2022).Characteristics of phase-change flow and heat transfer in loop thermosyphon:Three-dimension CFD modeling and experimentation. Case Studies in Thermal Engineering 35,102070.##
Yoon, A. and S. J. Kim (2021).A deep-learning approach for predicting oscillating motion of liquid slugs in a closed-loop pulsating heat pipe. International Journal of Heat and Mass Transfer 181,121860.##
Zhang, X., and Y. Zhang (2021).Heat transfer and flow characteristics of Fe3O4-water nanofluids under magnetic excitation. International Journal of Thermal Sciences 163, 106826.##
Zhou, Y., H. Yang, L. Liu, M. Zhang, Y. Wang, Y. Zhang and B. Zhou (2021). Enhancement of start-up and thermal performance in pulsating heat pipe with GO/water nanofluid. Powder Technology 384, 2021, 414-422.##
Volume 15, Issue 6 - Serial Number 67
November and December 2022
Pages 1947-1955
  • Received: 22 May 2022
  • Revised: 15 July 2022
  • Accepted: 30 July 2022
  • First Publish Date: 07 September 2022