THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Babak Aghel

,

Masoud Rahimi

,

Saeed Almasi

EXPERIMENTAL STUDY ON HEAT TRANSFER CHARACTERISTICS OF A MODIFIED TWO-PHASE CLOSED THERMOSYPHON

ABSTRACT
This study investigated the heat transfer characteristics of modified two-phase closed thermosyphon (TPCT) using water as the working fluid. In the modified TPCT, to reduce thermal resistance, a small TPCT was inserted inside the adiabatic section. For both the plain and modified thermosyphons the performances were determined at various heat inputs from 71-960 W. The results showed that the modified TPCT had less temperature difference between the evaporator and condenser sections than the plain one. According to the experimental data, in the modified TPCT, the thermal performance increased up to 20% over that of the unmodified one.
KEYWORDS
Two-phase closed thermosyphon, thermal resistance, thermal performance, heat transfer
PAPER SUBMITTED: 2015-06-16
PAPER REVISED: 2015-12-28
PAPER ACCEPTED: 2016-05-16
PUBLISHED ONLINE: 2016-05-30
DOI REFERENCE: https://doi.org/10.2298/TSCI150616118A
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Issue 6, PAGES [2481 - 2489]
REFERENCES
  1. Vafai, K., Wang W., Analysis of flow and heat transfer characteristics of an asymmetrical flat plate heat pipe, Int. J. Heat Mass Transfer, 35 (1992), pp. 2087-2099
  2. Sakulchangsatjatai, P., Kammuang-Lue, N ., On-Ai, K., Terdtoon, P., Correlations to predict thermal performance affected by working fluid's properties of vertical and horizontal closed-loop pulsating heat pipe. doi: 10.2298/TSCI140503105S.
  3. Jiao, B. et al., Investigation on the effect of filling ratio on the steady-state heat transfer performance of a vertical two-phase closed thermosyphon, Appl. Therm. Eng, 28 (2008), pp. 1417-1426
  4. Kammuang-Lue, N ., Sakulchangsatjatai, P., Terdtoon, P., Effect of working fluids and internal diameters on thermal performance of vertical and horizontal closed-loop pulsating heat pipes with multiple heat sources. doi: 10.2298/TSCI140904141K.
  5. Hussein, H. M. S. et al., Performance of wickless heat pipe flat plate solar collectors having different pipes cross sections geometries and filling ratios, Energy Convers. Manag, 47 (2006), pp. 1539-1549
  6. Park, Y. J. et al., Heat transfer characteristics of a two-phase closed thermosyphon to the fill charge ratio, Int. J. Heat Mass Transfer, 45 (2002), pp. 4655-4661
  7. Noie, S. H., Heat transfer characteristics of a two-phase closed thermosyphon, Appl. Therm. Eng , 25 (2005), pp. 495-506
  8. Tang, Y. et al., Experimental investigation on isothermal performance of the micro-grooved heat pipe, J. Exp.Therm. Fluids Sci, 47 (2013), pp. 143-149
  9. Chang, S. W., Lin C. Y., Thermal performance improvement with scale imprints over boiling surface of two-phase loop thermosyphon at sub-atmospheric conditions, Int. Commun. Heat Mass Transfer, 56 (2013), pp. 294 -308
  10. Khodabandeh, R., Furberg, R., Heat transfer, flow regime and instability of a nano- and micro-porous structure evaporator in a two-phase thermosyphon loop, Int. J. Thermal Sci , 49 (2010), pp. 1183-1192
  11. Wang, J., Experimental investigation of the transient thermal performance of a bent heat pipe with grooved surface, Applied Energy, 86 (2009) 10, pp. 2030-2037
  12. Rahimi, M. et al., Thermal characteristics of a resurfaced condenser and evaporator closed two-phase thermosyphon, Int. J. Heat Mass Transfer, 37 (2010), pp. 703-710
  13. Ming, Z. et al., The experimental study on flat plate heat pipe of magnetic working fluid, Int. J. Exp.Therm. Fluids Sci, 33 (2009), pp. 1100-1105
  14. Lin, Y. H. et al., Effect of silver nano-fluid on pulsating heat pipe thermal performance, Appl. Therm. Eng, 28 (2008), pp. 1312-1317
  15. Huminic, G., Huminic, A., Heat transfer characteristics of a two-phase closed thermosyphons using nanofluids, Int. J. Exp.Therm. Fluids Sci, 35 (2011), pp. 550-557
  16. Ji, Y. et al., Particle size effect on heat transfer performance in an oscillating heat pipe, Int. J. Exp.Therm. Fluids Sci, 35 (2011) 4, pp. 724-727
  17. Wong, S. C. et al., Visualization and evaporator resistance measurement in heat pipes charged with water, methanol or acetone, Int. J. Therm. Sci, 52 (2012), pp. 154-160
  18. Armijo, K. M., Carey, V. P., An analytical and experimental study of heat pipe performance with a working fluid exhibiting strong concentration Marangoni effects, Int. J. Heat Mass Transfer, 64 (2013), pp. 70-78
  19. Noie, S. H. et al., Heat transfer enhancement using Al2O3/water nanofluid in a two-phase closed thermosyphon, Int. J. Heat Fluid Flow, 30 (2009), pp. 700-705
  20. Khandekar, S. et al., Thermal performance of closed two-phase thermosyphon using nanofluids, Int. J. Therm. Sci, 47 (2007), pp. 659-667
  21. Hung, Y. H. et al., Evaluation of the thermal performance of a heat pipe using alumina nanofluids, Int. J. Exp.Therm. Fluids Sci, vol. 44, pp. 504-511, 2013
  22. Putra, N. et al., Thermal performance of screen mesh wick heat pipes with nanofluids, Int. J. Exp.Therm. Fluids Sci, 40 (2012), pp. 10-17
  23. Kang, S. W. et al., Experimental investigation of silver nanofluid on heat pipe thermal performance, Appl. Therm. Eng, 26 (2006), pp. 2377-2382
  24. Tsaia, C. Y. et al., Effect of structural character of gold nanoparticles in nanofluid on heat pipe thermal performance, Mater. Lett, 28 (2004), pp. 1461-1465
  25. Lin, Y. et al., Effect of silver nanofluid on pulsating heat pipe thermal performance, Appl, Therm. Eng, 28 (2008), pp. 1312-1317
  26. Faghri, A., Heat Pipe Science and Technology, Taylor and Francis, 1995
  27. S.W.Churchill, H.H.S. Chu, Correlating equations for laminar and turbulent free convection from a vertical plate, Int. J. Heat Mass Transfer 18(1975) 1323-1325.
PDF VERSION [DOWNLOAD]
Experimental study on heat transfer characteristics of a modified two-phase closed thermosyphon

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence