Characteristics research of low-temperature heat pipes for energy-saving equipment
DOI:
https://doi.org/10.15587/2312-8372.2016.71960Keywords:
heat pipes, capillary structure, composite porous material, fiber porous materialsAbstract
The efficiency of the heat pipes (HP) is largely dependent on the characteristics of capillary structures (CS) used therein. Due to the composite materials developed in Institute for Problems in Materials Science (IPMS) of NAS of Ukraine, which were used as the CS, Ukrainian heat pipes with high hydrodynamic and thermal characteristics were developed. The aim of the experimental work of the authors was the comparison of thermal characteristics of heat pipes that are based on composite porous structures with similar HP characteristics with fiber porous structures (which are considered to be the most effective view of insert HP). The results showed that HP with composite CS provides better thermal characteristics, especially when the heating of pipes was from the top, and cooling – from the bottom. In this position, a composite HP with CS steadily functioned under heat load up to 25 watts, whereas HP with fiber CS stopped stable operation at a load of 15 watts. As with the horizontal and vertical arrangement of the pipe (at «below» heat input), the value of thermal resistance (R [K/W]) for pipes with composite CS did not exceed values R that are typical for HP with fiber porous structures. Thus, thanks to the authors, it was found that the new composite structure is more appropriate to use when placing the HP at an angle to the "upper" heat supply than fiber HP.
References
- Raveendiran, P., Sivaraman, B. (2015). Heat transfer coefficient and friction factor characteristics of a gravity assisted baffled shell and heat-pipe heat exchanger. Journal of Engineering Science and Technology, Vol. 10, № 6, 802–810.
- Yau, Y. H., Ahmadzadehtalatapeh, M. (2015). Heat pipe heat exchanger and its potential to energy recovery in the tropics. Thermal Science, Vol. 19, № 5, 1685–1697. doi:10.2298/tsci100818020y
- Wu, Z.-C., Zhu, X.-P. (2015). Comparison of heat transfer efficiency between heat pipe and tube bundles heat exchanger. Thermal Science, Vol. 19, № 5, 1397–1402. doi:10.2298/tsci1504397w
- Sharmishtha, S. H., Jain, P. K. (2015). Influence of Different Parameters on Heat Pipe Performance. International Journal of Engineering Research and Applications, Vol. 5, № 10, 93–98.
- Jafarkazemi, F., Ahmadifard, E., Abdi, H. (2016). Energy and exergy efficiency of heat pipe evacuated tube solar collectors. Thermal Science, Vol. 20, № 1, 327–335. doi:10.2298/tsci130227150j
- Mozumder, A. K., Chowdhury, M. S. H., Akon, A. F. (2011). Characteristics of Heat Transfer for Heat Pipe and Its Correlation. ISRN Mechanical Engineering, Vol. 2011, 1–7. doi:10.5402/2011/825073
- Ageenko, A. V., Maziuk, V. V. (2014). Theoretical calculation method for powder capillary structure of loop heat pipe with inverted meniscus. Nauka i Tehnika, 4, 20–25.
- Hansen, G., Næss, E., Kristjansson, K. (2015, March 25). Sintered Nickel Powder Wicks for Flat Vertical Heat Pipes. Energies, Vol. 8, № 4, 2337–2357. doi:10.3390/en8042337
- Kostornov, A. G. (2003). Materialovedenie dispersnyh i poristyh metallov i splavov. Kyiv: Naukova dumka, 550.
- Thamir, K. J. (2013). An experimental study for heat transfer enhancement by laminar forced convection from horizontal and inclined tube heated with constant heat flux, using two types of porous media. Tikrit Journal of Engineering Science, Vol. 15, № 2, 15–36.
- Hudakorn, T., Terdtoon, P., Sakulchang, P. (2008, March 1). Effect of Inclination Angle on Performance Limit of a Closed-End Oscillating Heat Pipe. American Journal of Engineering and Applied Sciences, Vol. 1, № 3, 174–180. doi:10.3844/ajeassp.2008.174.180
- Kostornov, A. H., Moroz, A. L., Shapoval, A. A., Shapoval, I. V. (25.10.2011). Heat pipe. Patent of Ukraine № 96350. Appl. № a201001632. Filed 16.02.2010. Bull. № 20. Available: http://uapatents.com/3-96350-teplova-truba.html
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2016 Андрей Андреевич Шаповал, Юлия Валерьевна Стрельцова
![Creative Commons License](http://i.creativecommons.org/l/by/4.0/88x31.png)
This work is licensed under a Creative Commons Attribution 4.0 International License.
The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.