Conference Editor
Jianshun Zhang; Edward Bogucz; Cliff Davidson; Elizabeth Krietmeyer
Keywords:
Building Integrated PhotoVoltaics (BIPV), partial shading, Building Energy Simulation (BES), Modelica, openIDEAS.
Location
Syracuse, NY
Event Website
http://ibpc2018.org/
Start Date
24-9-2018 1:30 PM
End Date
24-9-2018 3:00 PM
Description
Two major causes of energy yield reduction in PV systems are partial shading and high operating temperatures. Both issues are particularly critical for BIPV systems. The correct assessment of the BIPV contribution to the built environment depends, therefore, on the accurate prediction of PV temperature and on the possibility of simulating shading effects. This paper describes the development of a multi-physics model for a naturally ventilated façade BIPV system within the openIDEAS environment for building and district energy simulations. The PV electrical model used here follows a physics-based approach that takes into account solar intensity and temperature spatial variations within the PV module, enabling the simulation of shading effects both at cell and module level. A detailed thermal model has been developed and coupled to the electrical model to estimate the PV temperature. Four case studies illustrate the importance of temperature and shading effects on the PV power output. The model has been validated using data from an experimental BIPV setup deployed in Belgium. The results indicate that the model is able to predict both the PV surface temperature and the power production, given the correct boundary conditions are applied.
Recommended Citation
Gonçalves, Juliana; Reynders, Glenn; Lehmann, Jonathan; and Saelens, Dirk, "Modelling of a naturally ventilated BIPV system for building energy simulations" (2018). International Building Physics Conference 2018. 4.
DOI
https://doi.org/10.14305/ibpc.2018.ms-2.04
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.
Modelling of a naturally ventilated BIPV system for building energy simulations
Syracuse, NY
Two major causes of energy yield reduction in PV systems are partial shading and high operating temperatures. Both issues are particularly critical for BIPV systems. The correct assessment of the BIPV contribution to the built environment depends, therefore, on the accurate prediction of PV temperature and on the possibility of simulating shading effects. This paper describes the development of a multi-physics model for a naturally ventilated façade BIPV system within the openIDEAS environment for building and district energy simulations. The PV electrical model used here follows a physics-based approach that takes into account solar intensity and temperature spatial variations within the PV module, enabling the simulation of shading effects both at cell and module level. A detailed thermal model has been developed and coupled to the electrical model to estimate the PV temperature. Four case studies illustrate the importance of temperature and shading effects on the PV power output. The model has been validated using data from an experimental BIPV setup deployed in Belgium. The results indicate that the model is able to predict both the PV surface temperature and the power production, given the correct boundary conditions are applied.
https://surface.syr.edu/ibpc/2018/MS2/4
Comments
If you are experiencing accessibility issues with this item, please contact the Accessibility and Inclusion Librarian through lib-accessibility@syr.edu with your name, SU NetID, the SURFACE link, title of record, and author & and reason for request.