Performance Characteristics of Aluminum Thermosyphon for PVT Solar Collector


  • Сергій Манісович Хайрнасов NTUU KPI, Ukraine
  • Борис Михайлович Рассамакін NTUU KPI, Ukraine
  • Євгеній Сергійович Алексеїк NTUU KPI, Ukraine
  • Анна Андріївна Анісімова NTUU KPI, Ukraine



Heat Pipe, Thermosyphon, Solar Thermal Collectors, PVT Solar Collectors


This article discusses the design of aluminum profile thermosyphons intended for use in PVT solar collectors. PVT solar collectors can simultaneously convert solar energy into electricity and heat, thus increasing the efficiency of solar power installation. The analysis of experimental studies of performance aluminum profile thermosyphons was presented. Graphical dependencies according to their maximum capacity and heat transportation, thermal resistance on the angle relative to the horizon, as well as the heat transfer coefficients in the evaporation zone of a let down on the density of heat flow were presented. The studies were conducted for outside diameters of their hulls 8, 10 and 14 mm; angles in the range from 5 to 90° and in the temperature range from 20 to 80 °C. The analysis of the experimental data allowed us to select the most optimal design of aluminum profile thermosyphon, which outer diameter is 10 mm. This thermosyphon transmits heat flux of more than 150 W, and the thermal resistance of not more than 0.04 K/W for tilt angles of combined solar collector more than 10 degrees.

Author Biographies

Сергій Манісович Хайрнасов, NTUU KPI

Khairnasov Sergey M., candidate of sciences (engineering), senior research fellow

Борис Михайлович Рассамакін, NTUU KPI

Rassamakin Boris M., candidate of sciences (engineering), senior research fellow

Євгеній Сергійович Алексеїк, NTUU KPI

Alekseik Eugene S., junior research fellow

Анна Андріївна Анісімова, NTUU KPI

Anisimova Anna A., magister


K. Voss and E. Musall, Net zero energy buildings. Detail Green Book. Munich: BirkhAuser Architecture, 2012, 192 p.

S.B. Riffat et al., “Performance testing of different types of solar collectors”, Int. J. of Energy Research, vol. 24, pp. 1203–1215, October 2000.

Solar photovoltaic energy, in Technology Roadmap. Paris: IEA Publications, 2010, p. 63.

Wim Depraetere, “Integrated design solution for the multifunctional skin of an office building,” in Conf. on Advanced Building Skins, Bressanone, Italy, 05–06 November 2013, pp. 41–45.

Xingxing Zhanga et al., “Review of R&D progress and practical application of the solar photovoltaic/thermal (PV/T) technologies,” Renewable and Sustainable Energy Reviews, vol. 16, pp 599–617, 2012.

D.A. Reay and P.A. Kew, Heat Pipes. Burlington: Butterworth-Heinemann is an imprint of Elsevier, 2006, 348 p.

Тепловые трубы в системах с возобновляемыми источниками энергии / Л.Л. Васильев, Л.П. Гракович, Д.К. Хрусталев. – Минск: Наука и техника, 1988. – 160 с.

F. Mahjouri, Vacuum Tube Liquid-Vapor (Heat-Pipe) Collectors [Online]. Available:

Salah R. Agha, “Heat Pipe Performance Optimization: A Taguchi Approach,” IJRMET, vol. 1, pp. 93–97, October 2011.

Jong Soo Kima et al., “The study of evacuated solar collector using pulsating heat pipe,” in 10th International Heat Pipe Symp., Taipei, Taiwan, 6–9 November 2012, pp. 196–200.

B. Rassamakin et al., “Space-applied aluminum profiled heat pipes with axial grooves: Experiments and simulation pipe science and technology,” J. of Heat Pipe Sci. and Tech., vol. 1, pp. 313–327, 2011.

Ya. Elgart et al., “Combined Photovoltaic-Thermal Solar Collector,” Australian New Innovation Patent Application No 2014100354, 10.04.2014.

B. Rassamakin et al., “Aluminium Heat Pipes Applied in Solar Collectors,” Solar Energy, vol. 92, pp. 145–154, Aug. 2013.

S. Khairnasov, “Analyzing the Efficiency of Photovol¬taic-Thermal Solar Collector Based on Heat Pipes,” Applied Solar Energy, vol. 50, pp. 10–15, 2014.