International Scientific Journal

Thermal Science - Online First

online first only

Experimental investigation of higher carbon alcohols with low latent heat of vaporization as self rewetting fluids in closed loop pulsating heat pipes

Heat recovery plays an important role in all energy systems. The dissipation of heat is drastically increasing due to the advancement of electronic components. To cool the electronic components many heat recovery devices are introduced and out of which heat pipes play an important role. Pulsating Heat Pipe (PHP) is a new type of heat transfer device which was introduced by Akachi in mid-1990. It is used mainly in the cooling of electronic components because of its potential for removing high heat flux. An experimental study was made to investigate the heat transfer performance of PHP using self-rewetting fluids of high carbon alcohols. The latent heat of vaporization plays an important role in the heat transfer performance of PHP. It was observed that the high carbon alcohols showed a decrease in the latent heat of vaporization. The high carbon alcohols such as 1-Butanol, 1-Pentanol, 1-Hexanol, 1-Heptanol, and 1-Octanol were mixed with the deionized water to form a self-rewetting fluid. These self-rewetting fluids showed a unique behavior due to the inverse Marangoni effect. It was observed that the lower thermal resistance and higher heat transfer coefficient was obtained, especially in the dilute aqueous solution of 1- Octanol.
PAPER REVISED: 1970-01-01
PAPER ACCEPTED: 2020-11-29
  1. Akachi, H. Structure of a heat pipe. US Patent, Patent Number 4921041, 1990.
  2. Akachi, H. Structure of a heat pipe. US Patent, Patent Number 5490558, 1996.
  3. Akachi, H., Polasek, F., and Stulc, P. Pulsating heat pipes. Simulating nonlinear materials under centrifugal forces by using intelligent cross-linked simulations. Proc. of 5thInt. Heat Pipe Symp., Melbourne, pp. 208-217, 1996.
  4. Arulselvan, A., Pandiyarajan, V., and Velraj, R. Experimental investigation of the thermal performance of a heat pipe under various modes of condenser cooling. Heat Transfer Research, vol. 48, nos. 13, pp. 1151 - 1164. 2017. DOI: 10.1615/HeatTransRes.2017011875
  5. Borkar, R. S., and Pachghare, P. R. Effect of working fluid, filling ratio and number of turns on pulsating heat pipe thermal performance. Frontiers in Heat Pipes, vol. 6, no. 4, pp. 1-6. 2015. DOI: 10.5098/fhp.6.4
  6. Fumoto, K., Kawaji, M., and Kawanami, T. An experimental study on a pulsating heat pipe with self-rewetting fluid. 2008 2ndInt. Conf. on Thermal Issues in Emerging Technologies, Cairo, Egypt, pp. 199-204, 2008.DOI: 10.1109/THETA.2008.5167169
  7. Fumoto, K., Ishida, T., Kawanami, T., and Inamura, T. Experimental study on pulsating heat pipe using self-rewetting fluid as a working fluid: visualization of thin liquid film and surface wave. Heat Pipe Science and Technology, An Int. J., Vol. 6, nos. 1 - 2, pp. 65 - 76. 2015. DOI: 10.1615/HeatPipeScieTech.2015013430
  8. George, A. C., and Binulal B. R. Experimental Study on the Performance of a Pulsating Heat Pipe with Aqueous Solution of Butanol at Different Orientations. 2016 Int. Conf. on Energy Efficient Technologies for Sustainability (ICEETS), Nagercoil, pp. 717-721. 2016. DOI: 10.1109/iceets.2016.7583843
  9. Groll, M., and Khandekar, S. Pulsating heat pipes: a challenge and still unsolvedproblem in heat pipe science. Archives of Thermodynamics, vol. 23, no. 4, pp. 17-28, 2002.
  10. Khandekar, S., Dollinger, N., and Groll, M. Understanding operational regimes of pulsating heat pipes: An experimental study. Applied Thermal Engineering, vol. 23, no. 6, pp. 707-719, 2003.DOI: 10.1016/s1359-4311(02)00237-5
  11. Kravet, V. Y., Nikolaenko, Y. E., and Nekrashevick, Y. V. Experimental Studies of Heat-Transfer Characteristics of Miniaturized Heat Pipes. Heat Transfer Research, vol. 38, no. 6, pp. 553 - 563. 2007. DOI: 10.1615/HeatTransRes.v38.i6.70
  12. Rahman, M. L., Salsabil, Z., Yasmin, N., Nourin, F. N., and Ali, M. Effect of using ethanol and methanol on thermal performance of a closed loop pulsating heat pipe (CLPHP) with different filling ratios. AIP Conf. Proc.,vol. 1754, no. 1, Article no. 050014. 2016a. DOI: 10.1063/1.4958405
  13. Rahman, M. L., Swarna, A. D., Ahmed, S. N. U., Perven, S. and Ali, M. Experimental investigation on thermal performance of a closed loop pulsating heatpipe (CLPHP) using methanol and distilled water at different filling ratios.AIP Conf. Proc., vol. 1754, no. 1, Article no. 050013. 2016b. DOI: 10.1063/1.4958404
  14. Smoot, C. D., Ma, H., Winholt, R. A., Jacobson, D. L., and Hussey, D. S. Thermal and visual observation of a hybrid heat pipe. Heat Transfer Research, vol. 44, nos. 1, pp. 31 - 42. DOI: 10.1615/HeatTransRes.2012005952
  15. Srikrishna, P., Hari Kumar, A. R., Reddy, S. U. M., and Narasimham, G. S. V. L. Experimental investigation of a single closed loop pulsating heat pipe. Proc. of the 24thNat. and 2ndInt. ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017), Hyderabad, India, pp. 747 - 752. 2017. DOI: 10.1615/IHMTC-2017.1050
  16. Su, X., Zhang, M., Han, W., and Guo, X. Experimental study on the heat transfer performance of an oscillating heat pipe with self-rewetting nanofluid. Int. J. of Heat and Mass Transfer, vol. 100, pp. 378-385. 2016. DOI: 10.1016/j.ijheatmasstransfer.2016.04.094
  17. Verma, B., Yadav, Y. L., and Srivastava, K. K. Heat transfer studies in a closed loop pulsating heat pipe. Heat Pipe Science and Technology, An Int. J., vol. 5, nos. 1 - 4, pp. 449 - 456. 2014. DOI: 10.1615/HeatPipeScieTech.v5.i1-4.510
  18. Wang, D., and Cui, X. Experiment research of pulsating heat pipe with different mixtures working fluids. The 21stInt. Symp. on Transport Phenomena, Kaohsiung City, Taiwan, 2010.
  19. Yamagami, K., Fumoto, K., Savino, R., Tsuyoshi Kawanami, T., and Inamura, T. Heat transfer characteristics of flat plate pulsating heat pipe using self-rewetting fluids. Joint 18th IHPC and 12th IHPS,Jeju, Korea, pp. 449-454, 2016.
  20. Zhang, Y., and Faghri, A. Advances and unsolved issues in pulsating heat pipes. Heat Transfer Engineering, vol. 29, no. 1, pp. 20-44, 2008.DOI: 10.1080/01457630701677114.
  21. Zhao, X., Cai, Y., Wang, J., and Li, X. H. Experimental study of thermal management of led automotive headlamps using heat pipes. Heat Transfer Research, vol.47, nos. 10, pp. 975 - 987. 2016. DOI: 10.1615/HeatTransRes.2016010569
  22. Kammuang-Lue, N., et al., Effect Of Working Fluids And Internal Diameters On Thermal Performance Of Vertical And Horizontal Closed-Loop Pulsating Heat Pipes With Multiple Heat Sources, Therm. Sci., 20 (2016), 1, pp. 77-87
  23. Kammuang-Lue, N., et al., Investigation And Prediction Of Optimum Meandering Turn Number Of Vertical And Horizontal Closed-Loop Pulsating Heat Pipes, Therm. Sci., 22 (2018), 1, pp. 273-284
  24. Jagtap, H.B., Wankhede, U.S., Experimental Investigations Of Effect Of Sound Waves On Oscillation And Startup Characteristics Of Oscillating Heat Pipe At Different Orientations, Therm. Sci., 21 (2017), 6, pp. 2587-2597
  25. Kammuang-Lue, N., et al., Thermal Resistance Of Rotating Closed-Loop Pulsating Heat Pipes Effects Of Working Fluids And Internal Diameters, Therm. Sci., 21 (2017), 6, pp. 2993-3000
  26. Charoensawan, P., Terdtoon, P., Visual Study On Two-Phase Flow In A Horizontal Closed-Loop Oscillating Heat Pipe, Therm. Sci., 23 (2019), 2 Part B, pp. 1055-1065
  27. Raffaele Savino , Anselmo Cecere,and Roberto Di Paola. Surface tension-driven flow in wickless heat pipes with self-rewetting fluids. International Journal of Heat and Fluid Flow , vol.30, pp. 380-388. 2009. DOI: 10.1016/j.ijheatfluidflow.2009.01.009
  28. R. Savino, D. De Cristofaro, and A. Cecere. Flow visualization and analysis of self-rewetting fluids in a model heat pipe. International Journal of Heat and Mass Transfer, vol. 115 pp. 581-591. 2017. DOI: 10.1016/j.ijheatmasstransfer.2017.07.090