Plenary Lecture
Optimum Tilt Angle for Solar Collectors with Low Concentration Ratio
Associate Professor Krisztina Uzuneanu
Thermal Systems and Environmental Engineering Department
“Dunarea de Jos” University of Galati
Romania
E-mail: kuzuneanu@ugal.ro
Abstract: The conversion of renewable energies become more important day by day, because of the conventional fuels cost and the environmental pollution. Solar energy is one of these renewable energies which can be converted directly into electricity or into heat. The efficiency of solar collector depends on many factors: design, construction, position, orientation, climatic condition of the place, application for they are used. The best way to collect maximum solar energy is to optimize the position and orientation of solar collectors. The performance of any solar energy system depends very much on the availability of solar radiation and the orientation of solar collectors. Solar collectors need to be inclined at the optimum angle to maximize the receiving energy. In this work, we proposed to analyze the optimum tilt angle for compound parabolic collectors CPC with different concentration ratios. There are analyzed the energy gains when the collector keeps the same position during the whole year and when the collector changes it tilt twice a year, on summer and on winter.
Brief Biography of the Speaker:Dr. Krisztina Uzuneanu graduated Faculty of Mechanical Engineering of University “Dunarea de Jos” of Galati in 1984 and she obtained the title of Doctor Engineer in 1998. Since 1987 she followed the academic carrier at Dunarea de Jos University of Galati as assistant, lecturer and associate professor. Dr. Uzuneanu is a visiting professor at different universities: Universidade do Minho, Portugal, Universita degli Studi di Genova, Italy, Universita degli Studi di Salerno, Italy, Pannon University Veszprem, Hungary, Erciyes University Kayseri, Turkey and visitor scientist of of Universidade do Minho Guimaraes, Portugal where she was awarded with a post-doc NATO grant in 2002 - 2003. Research fields are connected with applied thermodynamics, alternative fuels for internal combustion engines, modeling the thermal stresses of different parts of internal combustion engines, renewable energy and pollution. Dr. Uzuneanu published over 100 articles in national and internationals conferences proceedings and she is author of 3 books. The research work was done as member of 20 research contracts financed by European Commission and Romanian Ministry of Education and Research and director of 5 research contracts financed by industry. Dr. K. Uzuneanu is member of Romanian Society of Thermodynamics since 1990 and member of Balkan Environmental Association since 2011.