Abstract
The technical performance of a hybrid 'solar window' that provides heating in addition to daylighting is evaluated. A wavelength selective film is coupled with a compound parabolic concentrator (CPC) to reflect and concentrate the infrared portion of the solar spectrum onto a tubular absorber while transmitting the visible portion of the spectrum into the interior space. The optical performance of the CPC/selective film is predicted using a Monte Carlo Ray-Tracing model. An adaptive concentrator geometry based on asymmetrical truncation of CPCs is analyzed for vertical windows and horizontal skylights. The predicted visible transmittance is 0.66-0.73 for single glazed windows and 0.61-0.67 for double glazed windows. The solar heat gain coefficient and the U-factor are comparable to existing glazing technology. The annual thermal efficiency for double glazed windows/skylights based on use in Minneapolis, MN is 24-26%.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 290-302 |
| Number of pages | 13 |
| Journal | Solar Energy |
| Volume | 105 |
| DOIs | |
| State | Published - Jul 2014 |
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Keywords
- Building integration
- Hybrid
- Solar window
- Wavelength selective film
Cite this
Analysis of a hybrid solar window for building integration. / Ulavi, Tejas; Hebrink, Tim; Davidson, Jane H.
In: Solar Energy, Vol. 105, 07.2014, p. 290-302.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Analysis of a hybrid solar window for building integration
AU - Ulavi, Tejas
AU - Hebrink, Tim
AU - Davidson, Jane H
PY - 2014/7
Y1 - 2014/7
N2 - The technical performance of a hybrid 'solar window' that provides heating in addition to daylighting is evaluated. A wavelength selective film is coupled with a compound parabolic concentrator (CPC) to reflect and concentrate the infrared portion of the solar spectrum onto a tubular absorber while transmitting the visible portion of the spectrum into the interior space. The optical performance of the CPC/selective film is predicted using a Monte Carlo Ray-Tracing model. An adaptive concentrator geometry based on asymmetrical truncation of CPCs is analyzed for vertical windows and horizontal skylights. The predicted visible transmittance is 0.66-0.73 for single glazed windows and 0.61-0.67 for double glazed windows. The solar heat gain coefficient and the U-factor are comparable to existing glazing technology. The annual thermal efficiency for double glazed windows/skylights based on use in Minneapolis, MN is 24-26%.
AB - The technical performance of a hybrid 'solar window' that provides heating in addition to daylighting is evaluated. A wavelength selective film is coupled with a compound parabolic concentrator (CPC) to reflect and concentrate the infrared portion of the solar spectrum onto a tubular absorber while transmitting the visible portion of the spectrum into the interior space. The optical performance of the CPC/selective film is predicted using a Monte Carlo Ray-Tracing model. An adaptive concentrator geometry based on asymmetrical truncation of CPCs is analyzed for vertical windows and horizontal skylights. The predicted visible transmittance is 0.66-0.73 for single glazed windows and 0.61-0.67 for double glazed windows. The solar heat gain coefficient and the U-factor are comparable to existing glazing technology. The annual thermal efficiency for double glazed windows/skylights based on use in Minneapolis, MN is 24-26%.
KW - Building integration
KW - Hybrid
KW - Solar window
KW - Wavelength selective film
UR - http://www.scopus.com/inward/record.url?scp=84899831585&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84899831585&partnerID=8YFLogxK
U2 - 10.1016/j.solener.2014.03.006
DO - 10.1016/j.solener.2014.03.006
M3 - Article
AN - SCOPUS:84899831585
VL - 105
SP - 290
EP - 302
JO - Solar Energy
JF - Solar Energy
SN - 0038-092X
ER -