Row Spacing as a Controller of Solar Module Temperature and Power Output in Solar Farms

Brooke Stanislawski, Todd Harman, Timothy Silverman, Raul Cal, Marc Calaf

Research output: Contribution to journalArticlepeer-review

7 Scopus Citations

Abstract

When the temperature of solar photovoltaic modules rises, efficiency drops and module degradation accelerates. The spatial arrangement of solar modules can affect convective cooling and, consequently, module temperatures. However, the impact of row spacing on convective cooling in realistic solar farms has not yet been studied. Here, we develop six solar farm arrangements consisting of a fixed number of rows with varying streamwise row spacing. We model the flow and heat transfer of each solar farm using high-resolution large-eddy simulations. Results indicate that increasing row spacing can enhance convective cooling by 14.8%, which reduces module temperature by 6.6 °C and increases power output by 4.0% on average.

Original languageAmerican English
Article number063702
Number of pages11
JournalJournal of Renewable and Sustainable Energy
Volume14
Issue number6
DOIs
StatePublished - 1 Nov 2022

Bibliographical note

Publisher Copyright:
© 2022 Author(s).

NREL Publication Number

  • NREL/JA-5K00-81197

Keywords

  • CFD
  • convection
  • energy
  • large-eddy simulation
  • solar
  • yield

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