UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2022-07-01 16:13

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Conference: Bucharest University Faculty of Physics 2019 Meeting


Section: Physics and Technology of Renewable and Alternative Energy Sources


Title:
Theoretical and experimental study of a hybrid portable fresnel-parabolic mirror array solar concentrator


Authors:
Valentin GÎRLEANU(1), George ZĂRNESCU(2), Ioan STAMATIN(1,2)


Affiliation:
1) University of Bucharest, Faculty of Physics, PO Box MG 38, 077125, Bucharest-Magurele, Romania


2)University of Bucharest, Faculty of Physics, 3NanoSAE Research Center, PO Box MG 38, 077125, Bucharest

-Magurele, Romania



E-mail
gzarnescu@gmail.com


Keywords:
hybrid array module, portable solar concentrator, renewable energy, theoretical effciency


Abstract:
This work presents a new concept of hybrid and linear mirror array module designed with proper angles in order to minimize the total height and width of the suitcase. The suitcase has less than 15 kg, is made of aluminum frames that sustain also the mirrors inside, can be carried outside to be unfolded to a double width and concentrate the light to the black serpentine painted copper pipes absorber and to give hot water up to 350 K in less than a minute. The flow of the water can be adjusted with a little pump to cool down the water in the pipes, to be under 315 K. The geometrical concentration factor of the portable solar concentrator is up to 6. The theoretical analysis for lower than 500 K medium (copper-water interface) temperatures has demonstrated that we need at least a concentration ratio of 5 to reach 400 K and a maximum of 10 to reach 500 K, that is in an agreement with what we have designed and constructed. The maximum estimated total theoretical efficiency of this solar concentrator is 35%, which is including also the Carnot cycle efficiency.