Abstract
In this paper, the results of a nitrogen-based pulsating heat pipe (PHP) at varied condenser temperatures and fill ratios are compared. The tested PHP consists of two individual subsections, which are connected in a series configuration. Each subsection has 14 stainless-steel capillary tubes which form a total of 28 capillary tubes for the PHP. The PHP was tested at three different initial fill ratios (38%, 50%, and 63%) with the condenser temperature controlled at 79.5 K and 84.5 K. The optimal heat transfer performance of 55,3000 W/m-K was achieved at the initial fill ratio of 50% with the condenser temperature controlled at 84.5 K. At the same condenser temperature, the PHP with a 63% fill ratio achieved the maximum heat transfer capacity of 13.4 W before dry out. The experimental results of the PHP in a series configuration presented in this paper will be compared with subsequent PHP experiments with identical PHP subsections but in varied configurations.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Akachi, H.: Structure of a heat pipe. U.S. Patent No. 4 921 041, 1 May 1990
Natsume, K., et al.: Heat transfer performance of cryogenic oscillating heat pipes for effective cooling of superconducting magnets. Cryogenics 51(6), 309–314 (2011)
Wang, X., Jia, L.: Experimental study on heat transfer performance of pulsating heat pipe with refrigerants. J. Therm. Sci. 25(5), 449–453 (2016)
Shi, S., Cui, X., Han, H., Weng, J., Li, Z.: A study of the heat transfer performance of a pulsating heat pipe with ethanol-based mixtures. Appl. Therm. Eng. 102, 1219–1227 (2016)
Wang, D., Cui, X.: Experiment research on pulsating heat pipe with different mixtures working fluids. In: The 21st International Symposium on Transport Phenomena, Kaohsiung City, Taiwan (2010)
Xu, J.L., Li, Y.X., Wong, T.N.: High speed flow visualization of a closed loop pulsating heat pipe. Int. J. Heat Mass Transf. 48(16), 3338–3351 (2005)
Khandekar, S., Charoensawan, P., Groll, M., Terdtoon, P.: Closed loop pulsating heat pipes Part B: visualization and semi-empirical modeling. Appl. Therm. Eng. 23(16), 2021–2033 (2003)
Czajkowski, C., Nowak, A.I., Błasiak, P., Ochman, A., Pietrowicz, S.: Experimental study on a large scale pulsating heat pipe operating at high heat loads, different adiabatic lengths and various filling ratios of acetone, ethanol, and water. Appl. Therm. Eng. 165, 114534 (2020)
Han, DY., Sun, X., Gan, Z.H., Luo, R.Y., Pfotenhauer, J.M., Jiao, B.: Numerical investigation on pulsating heat pipes with nitrogen or hydrogen. In: IOP Conference Series: Materials Science and Engineering, vol. 278. IOP Publishing, Madison (2017)
Sagar, K.R., Naik, H.B., Mehta, H.B.: Numerical study of liquid nitrogen based pulsating heat pipe for cooling superconductors. Int. J. Refrig 122, 33–46 (2021)
Li, M.N., Wu, Z.X., Xu, D., Li, L.F.: Numerical simulation of 4-turns nitrogen pulsating heat pipe. In: IOP Conference Series: Materials Science and Engineering, vol. 502. IOP Publishing, Oxford (2019)
Khandekar, S., Dollinger, N., Groll, M.: Understanding operational regimes of closed loop pulsating heat pipes: an experimental study. Appl. Therm. Eng. 23(6), 707–719 (2003)
Xu, C.: Performance characterization of a helium PHP via Fluent. Ph.D. dissertation, Dept. of Mech. Eng. University of Wisconsin-Madison (2022)
Li, M., Li, L., Xu, D.: Effect of filling ratio and orientation on the performance of a multiple turns helium pulsating heat pipe. Cryogenics 100, 62–68 (2019)
Sagar, K.R.: Experimental investigations on novel condenser based cryogenic pulsating heat pipes. Ph.D. dissertation, Dept. of Mech. Eng. SVNIT, Surat, India (2022)
Li, M., Li, L., Xu, D.: Effect of number of turns and configurations on the heat transfer performance of helium cryogenic pulsating heat pipe. Cryogenics 96, 159–165 (2018)
Acknowledgments
The project is supported by Sumitomo (SHI) Cryogenics of America, Inc.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2023 Zhejiang University Press
About this paper
Cite this paper
Jiang, Z., Pfotenhauer, J., Miller, F. (2023). Results of a Nitrogen Pulsating Heat Pipe with Subsections in a Series Configuration. In: Qiu, L., Wang, K., Ma, Y. (eds) Proceedings of the 28th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2022. ICEC28-ICMC 2022. Advanced Topics in Science and Technology in China, vol 70. Springer, Singapore. https://doi.org/10.1007/978-981-99-6128-3_60
Download citation
DOI: https://doi.org/10.1007/978-981-99-6128-3_60
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-99-6127-6
Online ISBN: 978-981-99-6128-3
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)