Effect of tilt angle on soiling of photovoltaic modules

Jose Cano, Jim Joseph John, Sai Tatapudi, Govindasamy Tamizhmani

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

30 Scopus citations

Abstract

Soiling on PV modules is known to reduce PV system performance, mainly in dry arid climatic conditions. Cleaning with water or other means may become an expensive solution to the problem. For the highest annual energy production from a fixed tilt PV system, the modules are typically installed at tilt angle close to latitude angle of the system's location. Soiling loss is an interplay between terrain of the installation, tilt angle, rain frequency and rain intensity. For un-cleaned arrays in certain dusty locations, it would be better to optimize the tilt angle for maximizing transmitted radiation to the cells by adjusting the tilt angle slightly higher which would in turn minimize the soiling loss. In this work, we have developed an inexpensive soiling station which evaluates soiling loss at different tilt angles (0°, 5°, 10°, 15°, 20°, 23°, 30°, 33°, 40°). For Mesa, Arizona (a hot-dry climate), the 0° tilt angle showed a 2.02% loss whereas 23° and 33° showed soiling loss close to 1% during the first three months of 2011.

Original languageEnglish (US)
Title of host publication2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3174-3176
Number of pages3
ISBN (Electronic)9781479943982
DOIs
StatePublished - Oct 15 2014
Event40th IEEE Photovoltaic Specialist Conference, PVSC 2014 - Denver, United States
Duration: Jun 8 2014Jun 13 2014

Publication series

Name2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014

Other

Other40th IEEE Photovoltaic Specialist Conference, PVSC 2014
CountryUnited States
CityDenver
Period6/8/146/13/14

Keywords

  • insolation loss
  • photovoltaic modules
  • soiling
  • solar cells

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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