Evaluating the efficiency of closed two-phase thermosyphons based on experimental determination of temperatures in the characteristic cross sections of the working area

Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy


Release:

2019, Vol. 5. №1

Title: 
Evaluating the efficiency of closed two-phase thermosyphons based on experimental determination of temperatures in the characteristic cross sections of the working area


For citation: Maksimov V. I., Nurpeiis A. E. 2019. “Evaluating the efficiency of closed two-phase thermosyphons based on experimental determination of temperatures in the characteristic cross sections of the working area”. Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy, vol. 5, no 1, pp. 41-54. DOI: 10.21684/2411-7978-2019-5-1-41-54

About the authors:

Vyacheslav I. Maksimov, Сand. Sci. (Tech.), Associate Professor, Butakov Research Center, Tomsk Polytechnic University; elf@tpu.ru

Atlant E. Nurpeiis, Assistant, Butakov Research Center, Tomsk Polytechnic University; nurpeiis_atlant@mail.ru

Abstract:

This article presents the results of the experimental determination of temperatures in the working channel of a closed two-phase thermosyphon. The authors have conducted experimental research using a copper thermosyphon with a height of 161 mm, sidewall thickness of 1.5 mm, and a bottom cover of 2 mm. The internal diameter of the evaporation part and the vapor channel was 39 mm.

According to the results, the temperature in characteristic sections of the working area (with distilled water and low-boiling liquid n-pentane as the main coolants) was determined as a function of the heat flux (from 0.3 to 9.5 kW/m2 for distilled water and from 0.3 to 0.5 kW/m2 for n-pentane) and the filling ratio (ε = 8%). The time taken to reach the stationary mode of characteristic temperatures was found to be rather long in the whole range of the heat fluxes. The obtained dependencies of the temperature differences along the thermosyphon height showed that under the maximum thermal loads for the conditions under consideration, the temperature differences in the vapor channel of the thermosyphon do not exceed 5 K for distilled water and 1.1 K for n-pentane.

References:

  1. Alekseev B.A. 2002. Condition Monitoring (Diagnostics) of Large Power Transformers. Moscow: NTs ENAS. [In Russian]
  2. Arkhipov V. A., Berezikov A. P. 2008. Fundamentals of the Theory of Engineering and Physical Experiment: A Training Manual. Tomsk: Tomsk Polytechnic University. [In Russian]
  3. Bezrodny M. K., Volkov S. S., Moklyak V. F. 1991. Two-Phase Thermosyphons in Industrial Heat Engineering. Kiiv: Vishcha shkola. [In Russian]
  4. Bezrodny M. K., Pioro I. L., Kostyuk T. O. 2005. Transfer Processes in Two-Phase Thermosiphon Systems. Theory and Practice. Kiiv: Fakt. [In Russian]
  5. Spirin N. A., Lavrov V. V. 2004. Methods of Planning and Processing the Results of an Engineering Experiment: Lecture Notes (selected chapters from a textbook for universities). Edited by N. A. Spirin. Yekaterinburg: GOU VPO UGTU-UPI. [In Russian]
  6. Byrne P., Miriel J., Lénat Y. 2011. “Experimental study of an air-source heat pump for simultaneous heating and cooling — Part 2: Dynamic behaviour and two-phase thermosiphon defrosting technique”. Applied Energy, vol. 88, no 9, pp. 3072-3078. DOI: 10.1016/j.apenergy.2011.03.002
  7. Chehade A. A., Louahlia-Gualous H., Le Masson S., Victor I., Abouzahab-Damaj N. 2014. “Experimental investigation of thermosyphon loop thermal performance”. Energy Conversion and Management, vol. 84, pp. 671-680. DOI: 10.1016/j.enconman.2014.04.092
  8. Fadhl B., Wrobel L.C., Jouhara H. 2013. “Numerical modelling of the temperature distribution in a two-phase closed thermosyphon”. Applied Thermal Engineering, vol. 60, no 1-2, pp. 122-131. DOI: 10.1016/j.applthermaleng.2013.06.044
  9. Feoktistov D. V., Vympin E. A., Nurpeiis A. E. 2016. “Experimental Research of Thermophysical Processes in a Closed Two-Phase Thermosyphon”. MATEC Web of Conferences, vol. 72. 01081. DOI: 10.1051/matecconf/20167201081
  10. Hakeem M. A., Kamil M., Arman I. 2008. “Prediction of temperature profiles using artificial neural networks in a vertical thermosyphon reboiler”. Applied Thermal Engineering, vol. 28, no 13, pp. 1572-1579. DOI: 10.1016/j.applthermaleng.2007.10.002
  11. Huminic G., Huminic A. 2013. “Numerical study on heat transfer characteristics of thermosyphon heat pipes using nanofluids”. Energy Conversion and Management, vol. 76, pp. 393-399. DOI: 10.1016/j.enconman.2013.07.026
  12. Jiao B., Qiu L. M., Gan Z. H., Zhang X. B. 2012. “Determination of the operation range of a vertical two-phase closed thermosyphon”. Heat and Mass Transfer, vol. 48, no 6, pp. 1043-1055. DOI: 10.1007/s00231-011-0954-x
  13. Jouhara H., Robinson A. J. 2010. “Experimental investigation of small diameter two phase closed thermosyphons charged with water, FC-84, FC-77 and FC-3283”. Applied Thermal Engineering, vol. 30, no 2-3, pp. 201-211. DOI: 10.1016/j.applthermaleng.2009.08.007
  14. Kim C., Lee K.-S., Yook S.-J. 2016. “Effect of air-gap fans on cooling of windings in a large-capacity, high-speed induction motor”. Applied Thermal Engineering, vol. 100, pp. 658-667. DOI: 10.1016/j.applthermaleng.2016.02.077
  15. Kuznetsov G. V., Al-Ani M. A., Sheremet M. A. 2011. “Numerical analysis of convective heat transfer in a closed two-phase thermosyphon”. Journal of Engineering Thermophysics, vol. 20, no 2, pp. 201-210. DOI: 10.1134/S1810232811020081
  16. Kuznetsov G. V., Sitnikov A. E. 2002. “Numerical analysis of basic regularities of heat and mass transfer in a high-temperature heat pipe”. High Temperature, vol. 40, no 6, pp. 898-904. DOI: 10.1023/A:1021437502952
  17. Leong K. Y., Saidur R., Mahlia T. M. I., Yau Y. H. 2012. “Performance investigation of nanofluids as working fluid in a thermosyphon air preheater”. International Communications in Heat and Mass Transfer, vol. 39, no 4, pp. 523-529. DOI: 10.1016/j.icheatmasstransfer.2012.01.014
  18. Noie S. H. 2005. “Heat transfer characteristics of a two-phase closed thermosyphon”. Applied Thermal Engineering, vol. 25, no 4, pp. 495-506. DOI: 10.1016/j.applthermaleng.2004.06.019
  19. Sobhan C. B., Rag R. L., Peterson G. P. 2007. “A review and comparative study of the investigations on micro heat pipes”. International Journal of Energy Research, vol. 31, pp. 664-688. DOI: 10.1002/er.1285