Modeling the effect of the inclination angle on natural convection from a flat plate: The case of a photovoltaic module

Bojan Perovic, Jelena Klimenta, Dragan Tasic, Joan Peuteman, Dardan Klimenta, Ljiljana Andjelkovic
2017 Thermal Science  
a Fac ulty of Tech ni cal Sci ences, Uni ver sity of Pristina in Kosovska Mitrovica, Kosovska Mitrovica, Ser bia b In de pend ent Con sul tant in the Field of Ur ban and Spa tial Plan ning, Nis, Ser bia c Fac ulty of Elec tronic En gi neer ing, Uni ver sity of Nis, Nis, Ser bia d Kulab, KU Leuven, Ostend, Bel gium Orig i nal sci en tific pa per https://doi.org/10.2298/TSCI140821059P The main pur pose of this pa per is to show how the in cli na tion an gle af fects nat u ral con vec tion from a
more » ... on vec tion from a flat-plate pho to vol taic mod ule which is mounted on the ground sur face. In or der to model this ef fect, novel cor re la tions for nat u ral con vec tion from iso ther mal flat plates are de vel oped by us ing the fun da men tal dimensionless number. On the ba sis of the avail able ex per i men tal and nu mer i cal re sults, it is shown that the nat u ral con vec tion cor re la tions cor re spond well with the ex ist ing em pir i cal cor re la tions for ver ti cal, in clined, and hor i zon tal plates. Five ad di tional cor re lations for the crit i cal Grashof num ber are de rived from the avail able data, three indi cat ing the on set of tran si tional flow re gime and two in di cat ing the on set of flow sep a ra tion. The pro posed cor re la tions cover the en tire range of in cli na tion an gles and the en tire range of Prandtl num bers. This pa per also pro vides two worked exam ples, one for nat u ral con vec tion com bined with ra di a tion and one for nat u ral con vec tion com bined with forced con vec tion and ra di a tion. Key words: em pir i cal cor re la tion, flat plate, fun da men tal dimensionless num ber, in cli na tion an gle, nat u ral con vec tion, pho to vol taic mod ule Perovi}, B. D., et al.: Modeling the Effect of the Inclination Angle .
doi:10.2298/tsci140821059p fatcat:fe2rpvjm3zc7rcu4cy5rw273ca