Optimization of fixed PV panel “tilt” angles for maximal energy harvest considering year-around sky coverage conditions

Ammar Omar Gwesha, Yasir Mohammed Alfulayyih, Peiwen Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In order to maximize the electrical energy harvested by photovoltaic panels in a setup with fixed angles, it is important to get the angle optimized. In the present work, sunlight availability or sky coverage conditions of year-long period based on ten years’ data are counted in the modeling to optimize the PV panel tilt angles targeting for the maximal energy in a year. The analysis uses precise sunray calculation models. The energy harvested in every 6 minutes by a PV panel is summated for the daily time period from sunrise to sunset when the sun elevation angles are above 5 degree, with the sky-coverage factor multiplied. The results show that the annual solar energy received by a PV solar panel tilted with a fixed angle equal to the local latitude (at Tucson AZ, USA) could reach 2297 kWh/m2 under 10-year averaged sky coverage conditions. However, the gain in the yearly solar energy harvest is expected to be about 4.28%, 7.06%, and 8.42% higher if a PV panel is inclined optimally according to two-season, four-season, and monthly adjustments, respectively, compared to the optimized life-long fixed angle.

Original languageEnglish (US)
Title of host publicationEnergy
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791859438
DOIs
StatePublished - Jan 1 2019
EventASME 2019 International Mechanical Engineering Congress and Exposition, IMECE 2019 - Salt Lake City, United States
Duration: Nov 11 2019Nov 14 2019

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume6

Conference

ConferenceASME 2019 International Mechanical Engineering Congress and Exposition, IMECE 2019
CountryUnited States
CitySalt Lake City
Period11/11/1911/14/19

Keywords

  • Best prediction
  • Local weather statistics
  • Optimization
  • PV panel angles
  • Solar energy

ASJC Scopus subject areas

  • Mechanical Engineering

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  • Cite this

    Gwesha, A. O., Alfulayyih, Y. M., & Li, P. (2019). Optimization of fixed PV panel “tilt” angles for maximal energy harvest considering year-around sky coverage conditions. In Energy (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 6). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2019-10391