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A Study on temperature behavior of pulsating heat pipe with different diameter in evaporator

증발부 내경 변화에 따른 진동형 히트파이프의 온도 거동에 관한 연구

  • Kim, Jihoon (Department of Mechanical Engineering, Sogang University) ;
  • Park, Chulwoo (Department of Mechanical Engineering, Sogang University) ;
  • Shah, Syed Abdullah (Department of Mechanical Engineering, Sogang University) ;
  • Kim, Daejoong (Department of Mechanical Engineering, Sogang University)
  • Received : 2019.01.21
  • Accepted : 2019.02.06
  • Published : 2019.04.30

Abstract

In this study, the temperature behavior of Pulsating Heat Pipe (PHP) according to the diameter change were studied by limiting the diameter change to only the evaporator. To investigate operation of PHP in various heat input, heat input power was increased from 10 to 120 W. The results show operation can be divided into 3 regimes by temperature behavior. Thermal resistance was increased before start-up and decreased with increasing heat input. At 110 W heat input, thermal conductivity of 2 mm PHP was 8 .times higher compare to thermal conductivity of copper. Further, to investigate details of temperature behavior in higher heat input, FFT analysis was conducted. Based on the results, when the deviation of peak frequency in each section is lowest, the thermal resistance has lowest value.

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Fig. 1. Schematic of a closed loop pulsating heat pipe

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Fig. 2. Experimental set-up: water block, cartridge heater, thermal insulation box, bath circulator, power supply, DAQ, etc.

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Fig. 3. Evaporator and condenser section temperature variation of 2 mm PHP with time in 10~120 W heat input

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Fig. 4. Evaporator and condenser section temperature variation of 2.5 mm PHP with time in 10~120 W heat input

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Fig. 5. Evaporator and condenser section temperature variation of 3 mm PHP with time in 10~120 W heat input

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Fig. 6. Evaporator and condenser section temperature variation of 2 mm PHP with time in 10~30 W heat input (regime 1)

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Fig. 7. Evaporator and condenser section temperature variation of 2 mm PHP with time in 40~50 W heat input (regime 2)

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Fig. 8. Evaporator and condenser section temperature variation of 2.5 mm PHP with time in 40~50 W heat input (regime 2)

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Fig. 9. Evaporator and condenser section temperature variation of 3 mm PHP with time in 40~50 W heat input (regime 2)

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Fig. 10. Evaporator and condenser section temperature variation of 2.5 mm PHP at 80 W heat input (regime 3)

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Fig. 11. Thermal resistance of 3 different PHPs with 10~120 W heat input

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Fig. 12. Thermal conductivity of 3 different PHPs and copper with 10~120 W heat input

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Fig. 13. Section peak frequency and thermal resistance of 2 mm PHP with 60~120 W heat input

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Fig. 14. Section peak frequency and thermal resistance of 2.5 mm PHP with 60~120 W heat input

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Fig. 15. Section peak frequency and thermal resistance of 3 mm PHP with 60~120 W heat input

Acknowledgement

Supported by : 한국연구재단

References

  1. G. P. Peterson, "An introduction to heat pipes: modeling, testing, and applications," Wiley, 1994.
  2. H. Akachi, US Patent, Patent Number 4921041, 1990.
  3. Yury F. Maydanik, Valery I. Dmitrin and Vladimir G. Pastukhov, "Compact cooler for electronics on the basis of a pulsating heat pipe," Applied Thermal Engineering, Vol. 29, 2009, pp. 3511-3517. https://doi.org/10.1016/j.applthermaleng.2009.06.005
  4. Jian Qu, Hui-Ying Wu and Qian Wang, "Experimental investigation of silicon-based micro-pulsating heat pipe for cooling electronics," Nanoscale and Microscale Thermophysical Engineering, Vol. 16, 2012.
  5. S. Khandekar, "Pulsating heat pipe based heat exchangers," The 21st International Symposium on Transport Phenomena, Kaohsiung City, Taiwan, 2010.
  6. Honghai Yang, Sameer Khandekar and Manfred Groll, "Performance characteristics of pulsating heat pipes as integral thermal spreaders," International Journal of Thermal Sciences, Vol. 48, 2009, pp. 815-824. https://doi.org/10.1016/j.ijthermalsci.2008.05.017
  7. D. Zabek, J. Taylor, V. Ayel, Y. Bertin, C. Romestant and C. R. Bowen, "A novel pyoelectric generator utilising naturally driven temperature fluctuations from OHP for waste heat recovery and thermal energy harvesting," Journal of Applied Physics, Vol. 120, 2016.
  8. X. M. Zhang, J. L. Xu and Z. Q. Zhou, "Experimental study of a pulsating heat pipe using FC-72, ehtanol, water as working fluids," Experimental Heat Transfer, Vol. 17, 2004, pp. 47-67. https://doi.org/10.1080/08916150490246546
  9. Piyanun Charoensawan, Sameer Khandekar, Manfred Groll and Pradit Terdtoon, "Closed loop pulsating heat pipes Part A; parametric experimental investigations," Applied Thermal Engineering, Vol. 23, 2003, pp. 2009-2020. https://doi.org/10.1016/S1359-4311(03)00159-5
  10. D. Yin, H. Rajab and H. B. Ma, "Theoretical analysis of maximum filling ratio in an oscillating heat pipe," International Journal of Heat and Mass Transfer, Vol. 74, 2014, pp. 353-357. https://doi.org/10.1016/j.ijheatmasstransfer.2014.03.018
  11. Honghai Yang, S. Khandekar and M. Groll, "Operational limit of closed loop pulsating heat pipes," Applied Thermal Engineering, Vol. 28, 2008, pp. 49-59. https://doi.org/10.1016/j.applthermaleng.2007.01.033
  12. Jiansheng Wang, He Ma and Qiang Zhu, "Effects of the evaporator and condenser length on the performance of pulsating heat pipes," Applied Thermal Engineering, Vol. 91, 2015, pp. 1018-1025. https://doi.org/10.1016/j.applthermaleng.2015.08.106
  13. Gi Hwan Kwon and Sung Jin Kim, "Experimental investigation on the thermal performance of a micro pulsating heat pipe with a dual-diameter channel," International Journal of Heat and Mass Transfer, Vol. 89, 2015, pp. 817-828. https://doi.org/10.1016/j.ijheatmasstransfer.2015.05.091
  14. Sameer Khandekar, Anant Prasad Gautam and Pavan K. Sharma, Multiple quasi-steady states in a closed loop pulsating heat pipe, International Journal of Thermal Sciences, Vol. 48, 2009, pp. 535-546 https://doi.org/10.1016/j.ijthermalsci.2008.04.004
  15. Xiaoyu Cui, Yue Zhu, Zhihua Li and Shende Shun, Combination study of operation characteristics and heat transfer mechanism for pulsating heat pipe, Applied Thermal Engineering, Vol. 65, 2014, pp. 394-402 https://doi.org/10.1016/j.applthermaleng.2014.01.030
  16. S. Khandekar, N. Dollinger and M. Groll, "Understanding operational regimes of closed loop pulsating heat pipes: an experimental study," Applied Thermal Engineering, Vol. 23, 2003, pp. 707-719 https://doi.org/10.1016/S1359-4311(02)00237-5
  17. Dong Xu, Laifeng Li and Huiming Liu, "Experimental investigation on the thermal performance of helium based cryogenic pulsating heat pipe," Experimental Thermal and Fluid Science, Vol. 70, 2016, pp. 61-68 https://doi.org/10.1016/j.expthermflusci.2015.08.024
  18. J. L. Xu and X. M. Zhang, "Start-up and steady thermal oscillation of a pulsating heat pipe," Heat Mass Transfer, Vol. 41, 2005, pp. 685-694 https://doi.org/10.1007/s00231-004-0535-3
  19. S. Khandekar and M. Groll, "An insight into thermo-hydrodynamic coupling in closed loop pulsating heat pipes," International Journal of Thermal Sciences, Vol. 43, 2004, pp. 13-20 https://doi.org/10.1016/S1290-0729(03)00100-5