Optimal design of photovoltaic shading systems for multi-story buildings

Xue Li, Jinqing Peng, Nianping Li, Yupeng Wu, Yueping Fang, Tao Li, Meng Wang, Chunlei Wang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This study provides new insights into the comprehensive energy and economic performances of photovoltaic shading systems (PVSS) in multi-story buildings. A numerical shading model was developed to evaluate the shading effect from an upper PVSS row on its subjacent row. Simulation models based on EnergyPlus were developed to analyze the net electricity consumption (NEC) of PVSS with different tilt angles and widths in different climates. Benefit per capacity (BC) and the cost of benefit (CB) indicators were used to analyze the economic performances of PVSS. Finally, the optimum PVSS tilt angles and widths in different cities were obtained. Harbin, Beijing, Changsha, Kunming, and Guangzhou, were selected as representative cities for different geographical and climatic conditions. The results indicate that the optimum tilt angles for PVSS installed in Harbin, Beijing, Changsha, Kunming and Guangzhou are 55°, 50°, 40°, 40° and 30°, respectively. Optimum PVSS width for all five cities is 1.156m (7 columns of standard solar cells). PVSS installed, using the optimal design scheme, in multi-story buildings have better energy-saving potentials than either rooftop photovoltaic systems or traditional power supply modes for commercial buildings in China.
Original languageEnglish
Pages (from-to)1024-1038
Number of pages15
JournalJournal of Cleaner Production
Volume220
Early online date28 Jan 2019
DOIs
Publication statusPublished - 20 May 2019

Fingerprint

shading
Economics
tilt
Numerical models
Solar cells
Energy conservation
Electricity
Optimal design
Costs
photovoltaic system
economics
climate

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Cleaner Production. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Cleaner Production, [In -press], (2019) DOI: 10.1016/j.jclepro.2019.01.246

© 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

  • Photovoltaic shading systems
  • Numerical shading model
  • Net electricity consumption
  • Cost of benefit

Cite this

Optimal design of photovoltaic shading systems for multi-story buildings. / Li, Xue ; Peng, Jinqing ; Li, Nianping ; Wu, Yupeng; Fang, Yueping; Li, Tao; Wang, Meng ; Wang, Chunlei .

In: Journal of Cleaner Production, Vol. 220, 20.05.2019, p. 1024-1038.

Research output: Contribution to journalArticle

Li, Xue ; Peng, Jinqing ; Li, Nianping ; Wu, Yupeng ; Fang, Yueping ; Li, Tao ; Wang, Meng ; Wang, Chunlei . / Optimal design of photovoltaic shading systems for multi-story buildings. In: Journal of Cleaner Production. 2019 ; Vol. 220. pp. 1024-1038.
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N2 - This study provides new insights into the comprehensive energy and economic performances of photovoltaic shading systems (PVSS) in multi-story buildings. A numerical shading model was developed to evaluate the shading effect from an upper PVSS row on its subjacent row. Simulation models based on EnergyPlus were developed to analyze the net electricity consumption (NEC) of PVSS with different tilt angles and widths in different climates. Benefit per capacity (BC) and the cost of benefit (CB) indicators were used to analyze the economic performances of PVSS. Finally, the optimum PVSS tilt angles and widths in different cities were obtained. Harbin, Beijing, Changsha, Kunming, and Guangzhou, were selected as representative cities for different geographical and climatic conditions. The results indicate that the optimum tilt angles for PVSS installed in Harbin, Beijing, Changsha, Kunming and Guangzhou are 55°, 50°, 40°, 40° and 30°, respectively. Optimum PVSS width for all five cities is 1.156m (7 columns of standard solar cells). PVSS installed, using the optimal design scheme, in multi-story buildings have better energy-saving potentials than either rooftop photovoltaic systems or traditional power supply modes for commercial buildings in China.

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