Science – Future of Lithuania / Mokslas – Lietuvos Ateitis, Vol 6, No 4 (2014)

The Impact of the Supplied Airflow Rate on the Effectiveness of the Solar Wall

Violeta Misevičiūtė (Vilnius Gediminas Technical University, Lithuania)
Lukas Rudzinskas (Vilnius Gediminas Technical University, Lithuania)


The paper analyses the impact of the supplied airflow rate of the solar wall used for heating air in an air handling unit on the effectiveness of the solar wall. The article reviews experimental and theoretical papers and presents the expressions determining the efficiency indicators of the solar wall. Experimental research into the solar wall at a constant airflow rate was carried out on 5–6 April 2014. Temperatures, overall efficiencies and an increase in temperature were established on the vertical solar wall counting the area of 100 m2 and fixed on the south façade of Vilnius Gediminas Technical University. An increase in the average temperature, in the course of the conducted experiment, reached 7.5 °C. Under constant airflow rate, temperature efficiency increases along with solar irradiation. The average estimated temperature efficiency reaches 72 percent. The overall effectiveness of the solar wall decreases when solar irradiation increases.

Article in: Lithuanian

Article published: 2014-10-24

Keyword(s): overall (thermal) efficiency; solar energy; solar wall; increase in temperature; ventilation.

DOI: 10.3846/mla.2014.60

Full Text: PDF pdf

Science – Future of Lithuania / Mokslas – Lietuvos Ateitis ISSN 2029-2341, eISSN 2029-2252
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 License.