CFD Modeling of Operating Processes of a Solar Air Heater in ANSYS Fluent

D. I. Pashchenko*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Rapid development of the technologies of use of renewable energy sources in the recent decade has opened up prospects for satisfying our society′s ever growing needs for fuel and power resources. In the present work, the author has shown results of investigation into the thermal and aerodynamic characteristics of a solar air heater. A computer model whose adequacy has been confirmed using experimental data was developed in the ANSYS Fluent software product. It has been determined that for the end of calendar autumn, the operating efficiency of the solar air heater is the highest at the angle of inclination of the absorption surface to the earth α = 60 ° . The dependence of the value of heating of air in the solar heater during daylight hours has been determined in the physical and computer experiment; it has been established that for the city of Samara (GMT + 4) the maximum air heating is observed in the interval between 13.00 and 14.00. The influence of transverse ribs on the heat exchange between the light-absorbing surface and the air has been shown. A curvilinear shape of the temperature contour is formed in the immediate vicinity of the ribs due to the formation of vortices and reverse-current zones.

Original languageEnglish
Pages (from-to)73-79
Number of pages7
JournalJournal of Engineering Physics and Thermophysics
Volume92
Issue number1
DOIs
StatePublished - 15 Jan 2019
Externally publishedYes

Keywords

  • ANSYS
  • CFD modeling
  • energy efficiency
  • renewable energy sources
  • solar air heater

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