Shading by overhang PV collectors

Joseph Appelbaum*, Avi Aronescu, Tamir Maor

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Photovoltaic modules integrated into buildings may provide shading to windows, doors and walls to protect against sun rays and at the same time generate ancillary electrical energy. The study develops the methodology for calculating the shadow variation cast by overhangs on doors, windows, carports, and calculates the annual incident energy (beam, diffuse and global energy) on overhangs made up of conventional and bifacial PV modules. The methodology of the present study is different from published articles including software programs. The study starts with shadows on walls cast by a horizontal pole and follows by shadows on walls cast by horizontal plates, inclined pole, inclined plate, and shaded area. The study deals also with overhangs placed one above the other. The calculation of the diffuse radiation involves the calculation of view factors to sky, to ground and between overhangs. In addition, the present study suggests using bifacial PV modules for overhangs and calculates the contribution of the reflective energy (5% and more) from walls and ground to the rear side of the bifacial PV module.

Original languageEnglish
Article number4280
JournalApplied Sciences (Switzerland)
Volume9
Issue number20
DOIs
StatePublished - 1 Oct 2019

Keywords

  • BIPV
  • Bifacial PV collectors
  • Overhang PV collectors
  • Window shadowing

Fingerprint

Dive into the research topics of 'Shading by overhang PV collectors'. Together they form a unique fingerprint.

Cite this