SHADECO: A low-cost shadow-ring for diffuse measures: State of the art, principles, design and application

Autor: Stéphane Guichard, Aurélien Jean, Bruno Malet-Damour, Harry Boyer, Frédéric Miranville
Přispěvatelé: Physique et Ingénierie Mathématique pour l'Énergie, l'environnemeNt et le bâtimenT (PIMENT), Université de La Réunion (UR)
Rok vydání: 2018
Předmět:
Zdroj: Renewable Energy
Renewable Energy, Elsevier, 2017, ⟨10.1016/j.renene.2017.09.083⟩
ISSN: 0960-1481
1879-0682
Popis: Nowadays, given the high cost of an experimental phase and to validate the developed models, the calculator is used by more and more researchers. However, experimentation is a major step to validate any model. To get some accurate data, the devices must be efficient. That is why their prices is very expensive. To overcome this problem, researchers leading to new approaches for developing their own prototypes. The challenge is to have accuracy devices for a lower cost. Measurement of diffuse illuminance requires the use of a device to mask the solar disk, like the shadow-ring. In this paper, a manufacturing protocol is proposed to design a shadow-ring, named SHADECO, according to the latitude of the study site and composed of basic materials. For the same efficiency, it allows a cost 4 to 6 times lower than industrial ring. To demonstrate the low cost-saving ratio of the data obtains, a study was conducted on predictive modeling of the behavior of an indoor lighting device. Two models are compared: one using diffuse illuminance deduced (from k t ) and the other using the diffuse illuminance obtained with SHADECO. Using data measured instead of data deduced can improve by almost 34% the model's accuracy.
Databáze: OpenAIRE
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