RT info:eu-repo/semantics/article
T1 New device for the simultaneous measurement of diffuse solar irradiance on several azimuth and tilting angles
A1 Simón Martín, Miguel de
A1 Alonso Tristán, Cristina
A1 González Peña, David
A1 Diez Mediavilla, Montserrat
K1 Solar diffuse irradiance
K1 Shadow-ring
K1 Tilted surfaces
K1 Oriented surfaces
K1 Pyranometer
K1 Building integrated photovoltaic systems
K1 Electrotecnia
K1 Electrical engineering
AB A device is proposed for the measurement of diffuse solar irradiance on tilted surfaces pointing-to as well as fixed on the equatorial direction. Most commercial devices are not designed for this purpose. Here, we present a specific design for a system based on a single multi-lobe shadow-ring that allows us to measure diffuse irradiance with several tilted pyranometers – from 60 to 90 degrees from the horizontal plane – and on different azimuth angles. This first prototype allows us to measure in the four cardinal directions. The ring is designed to minimize the covered celestial dome observed by each sensor. Moreover, the complete device needs a very small installation area and its simplicity means it is inexpensive and easy to operate. The measurements have subsequently to be corrected with a geometrical correction factor that takes into account the portion of the sky vault blocked by the shadow-ring. These measurements are essential for estimating solar potential on tilted surfaces – such as building façades – and for improving current anisotropic solar models, among many other applications.
PB Elsevier
SN 0038-092X
YR 2015
FD 2015-09
LK http://hdl.handle.net/10259/4755
UL http://hdl.handle.net/10259/4755
LA eng
NO Spanish Government (grant ENE2011-27511).
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024