Understanding BIPV performance with respect to WWR for energy efficient buildings

Pranav Kishore, Nandhini Selvam, Srijan Didwania, Godfried Augenbroe

Research output: Contribution to journalArticlepeer-review


Globally, the building sector absorbs 40% of energy, which is expected to reach double or triple by 2050. Building-integrated Photovoltaic (BIPV), known to the use of PV to replace long-established building envelopes such as windows, roofs, and walls which will create energy while simultaneously protecting the inside the structure from the harsh outside environment. The study utilizes Application of BIPV, as a fenestration component in various commercial structures around the United States of America. The paper addresses the dual functionality of PV on fenestrations which not only is an on-site energy generator but also decreases thermal transmittance. To comprehend the significance of BIPV across the United States, five different temperature zones were taken into account: Atlanta, Chicago, Los Angeles, Miami, and Phoenix round out the top five. The component chosen for BIPV is the dye-sensitized solar cell. Using the WINDOW Tool, two alternative BIPV models were computationally created, where the first type of window had two panes with Dye-Sensitized Solar Cells (DSSC) filled between The second model was a three-pane window as opposed to a window with two panes with DSSC and Inert gas filled between the first and second, second and third, and so forth. Three different commercial buildings were considered for the study, from the reference building. Another parameter of variability was introduced such as the Window to Wall Ratio (WWR) [1]. East, West, and South faces of the structure, the most commonly utilized WWR, such as 40%, 60%, and 80%, were taken into consideration. The potential for energy savings was assessed for Every one of these combinations of building type, climate/cities, WWR, and BIPV windows. The study finds an answer, in Triple glazed windows as the most efficient solution in the case of the small building.

Original languageEnglish
Pages (from-to)1073-1083
Number of pages11
JournalEnergy Reports
Publication statusPublished - 11-2022

All Science Journal Classification (ASJC) codes

  • Energy(all)


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